Ow does the light-collecting area of an 8-meter telescope compare to that of a 2-meter telescope?

Answers

Answer 1
The area will be the square of the quotient of the amounts for each telescope. Comparing the two microscopes, the 8-meter model is 4 times larger than the 2-meter model. Squaring this value gives a ratio of 16 times the amount of visual area for the larger telescope.

Related Questions

If a projectile fired beneath the water, straight up, breaks through the surface at a speed of 13m/s, to what height above the water will it ascend

Answers

Final answer:

The projectile will ascend to a height of 9.9 meters above the water's surface.

Explanation:

To find the maximum height above the water, we can use the equations of motion for projectile motion. First, we need to find the time it takes for the projectile to reach the surface of the water. We can use the equation y = v0t + (1/2)at2, where y is the displacement, v0 is the initial velocity, a is the acceleration due to gravity, and t is the time.

Given that the initial velocity is -13m/s (since the projectile is moving in the opposite direction of the acceleration due to gravity), the acceleration due to gravity is -9.8m/s2, and the displacement is 0 (since the projectile breaks through the surface of the water), we can rearrange the equation to solve for t: 0 = -13t + (1/2)(-9.8)t2. By solving this quadratic equation, we find that t = 1.33s or t = 0.

Since the time can't be negative, we discard the t = 0 solution. Therefore, the time it takes for the projectile to reach the surface of the water is t = 1.33s. Now, to find the maximum height above the water, we can use the equation v = v0 + at, where v is the final velocity, v0 is the initial velocity, a is the acceleration, and t is the time.

Using the known values: v = 0m/s (since the projectile comes to a stop at its maximum height), v0 = -13m/s, a = -9.8m/s2, and t = 1.33s, we can rearrange the equation to solve for the maximum height h: 0 = -13 - 9.8(1.33) + h. By solving this equation, we find that h = 9.9m. Therefore, the projectile will ascend to a height of 9.9 meters above the water's surface.

When joshua brakes his speeding bicycle to a stop, kinetic energy is transformed to select one:?

Answers

Potential energy, I’m pretty sure I don’t know but we was learning this in science and this is all I remember that potential energy is the moment energy reaches to a stop...

Answer:

the answer is heat. pleas give me a thanks if the answer is right

how is tempature related to kinetic energy

Answers

Ben has $10 to spend on dinner. He an have a pizza deliver red, drive to a burger place, or go to the grocery store to get ingredients for a fresh salad. In the end, he goes with the salad. If each meal would have cost him the same amount, what is Ben's incentive for choosing salad?
Temperature is the average kinetic energy of the particle of matter. The hotter something is the more kinetic energy it has.

If an object moves with a constant velocity, what is the acceleration of the object? What is the net force acting on the object?

Answers


Acceleration is a change in velocity.  If the velocity is constant,
then there's no change, and acceleration is zero.

Net force on an object always produces acceleration.  If acceleration
is zero, then net force must also be zero.

Final answer:

An object moving with constant velocity has an acceleration of zero and a net force acting on it also zero, as forces are balanced and it is in equilibrium according to Newton's second law.

Explanation:

If an object moves with a constant velocity, the acceleration of the object is zero. This is because acceleration is defined as the change in velocity over time, and if the velocity is constant, there is no change. Therefore, according to Newton's second law, which states F = ma (force equals mass times acceleration), if the acceleration is zero, the net force acting on the object must also be zero. This scenario is true for all objects in equilibrium, whether they are moving at constant velocity or are stationary relative to Earth. Objects in equilibrium have net forces that are balanced, resulting in no acceleration.

As for the net force acting on the object, it would also be zero. When an object travels at constant velocity, it is not accelerating, which means the forces acting on it are in equilibrium—the sum of all forces equals zero. This could include situations such as a car moving at a steady speed on a flat road where the engine's thrust equals the frictional forces opposing it.

The light-gathering power of a 4-meter telescope is ________ than that of a 2-meter telescope.

Answers

The "meters" measurements refer to the diameter of the objective (the main big-moose lens or mirror).
But light collection depends on the AREA of the objective, and that means the SQUARE of the diameter.
So if you double the 'size' if the telescope, it gathers FOUR TIMES as much light as before.

Final answer:

The light-gathering power of a 4-meter telescope is significantly greater than that of a 2-meter telescope due to the proportional increase in aperture area, allowing it to collect four times as much light.

Explanation:

The light-gathering power of a 4-meter telescope is significantly greater than that of a 2-meter telescope. This is because the light-gathering ability of a telescope is determined by the area of its aperture (the mirror or lens that collects light), and this area increases with the square of the diameter of the aperture. Therefore, a 4-meter diameter telescope has an aperture area that is 4 times larger than that of a 2-meter diameter telescope, allowing it to gather significantly more light.

To illustrate, if a 1-meter telescope collects a certain amount of light, a 4-meter telescope, with 16 times the area, would collect 16 times as much light. Similarly, compared to a 2-meter telescope, a 4-meter telescope, having an area four times greater (since the area is proportional to the square of the diameter), can collect four times as much light.

In the 2008 Olympics, Jamaican sprinter usain's bolt average shocked the world as he ran the 100- meter dash in 9.69 seconds. Determine usain's average speed for the race.

Answers

Avg Speed = Total Distance/Total time taken avg speed= 100 m / 9.69sec = 10.3 m/sec.

An atom has 29 protons, 29 electrons, and 35 neutrons. What is the mass number of the atom?

Answers

the mass number is 64
The mass number will be 64 as to calculate the mass you add up the protons and neutrons.

Hope this helps!

An analogy makes a comparison between objects based on their similar qualities. Cassidy wanted to create an analogy for the motion of atoms in solids, liquids, and gases, so she compared them to marbles in a tray. Which best compares the phases of matter to marbles in a tray? A solid is like the tray being shaken and the marbles moving around it, and a liquid is like the tray being shaken slowly and all the marbles moving in their positions. A solid is like the tray being shaken slowly and all the marbles moving in their positions, a liquid is like the tray being shaken and the marbles moving around it, and a gas is like the tray being shaken hard and the marbles moving vigorously around it. A gas is like the tray being shaken slowly and all the marbles moving in their positions, and a solid is like the tray being shaken hard and the marbles moving vigorously around it. A liquid is like the tray being shaken hard and the marbles moving vigorously around it, and a gas is like the tray being shaken slowly and all the marbles moving in their positions.

Answers

A solid is like the tray being shaken slowly and all the marbles moving in their positions, a liquid is like the tray being shaken and the marbles moving around it, and a gas is like the tray being shaken hard and the marbles moving vigorously around it. ---- Let's look at Cassidy's analogy based upon our knowledge of the differences between solids, liquids, and gasses. Solid = atoms are in a fixed relationship to their neighbors. Liquid = atoms are in contact with each other, but not in a fixed relationship. They can move relative to each other. Gas = atoms are in rapid motion and not in contact with each other. Now let's look at the possible answers and see which corresponds to reality. A solid is like the tray being shaken and the marbles moving around it, and a liquid is like the tray being shaken slowly and all the marbles moving in their positions. ** This one has two problems. A gas isn't even mentioned and roles of a solid vs a liquid are swapped. So this is a bad choice. A solid is like the tray being shaken slowly and all the marbles moving in their positions, a liquid is like the tray being shaken and the marbles moving around it, and a gas is like the tray being shaken hard and the marbles moving vigorously around it. ** This sounds like a very good choice. Let's see if the remaining choices are as good or better. A gas is like the tray being shaken slowly and all the marbles moving in their positions, and a solid is like the tray being shaken hard and the marbles moving vigorously around it. ** Two problems here as well. No mention of liquids, and the roles of solids and gasses have been swapped. Bad choice. A liquid is like the tray being shaken hard and the marbles moving vigorously around it, and a gas is like the tray being shaken slowly and all the marbles moving in their positions. ** This one also has problems. The liquid is described the way a gas should be. And the gas is being described like a solid would be. And there's no mention of a solid. So this is a bad choice as well.

Answer:

The answer is b for anyone wondering.

Explanation:

A spacecraft is separated into two parts by detonating the explosive bolts that hold them together. the masses of the parts are 1300 kg and 1700 kg. the magnitude of the impulse on each part from the bolts is 210 n · s. with what relative speed do the two parts separate because of the detonation?

Answers

Ft = mv - mu Choose the frame of reference where initially the spacecraft is at rest - I'm assuming it isn't accelerating. Ft = 300ns taking u=0, First part of craft: 210 = 1300 * v v= 0.25m/s Second part: 210 = 1700 *v v=0.1666m/s These velocities will be in opposite directions so adding them together gives the relative speed of the 2 parts ie. v rel = 0.16666+0.25 = 0.41666m/s

Identify the following physical quantities as scalars or vectors.
-position
-velocity
-displacement
-speed
-acceleration
-average velocity
-distance

Answers

position displacement velocity acceleration are vectors and the rest are scalars

Position, velocity, displacement, acceleration, and average velocity are vector quantities and Speed and distance are scalar quantities.

What are Vector and Scalar quantities?

A vector is a quantity with both magnitude and direction in physics. It is often represented by an arrow with the same direction as the amount and a length proportional to the magnitude of the quantity. A vector lacks position but does have magnitude and direction. A vector is therefore unaffected by displacement parallel to itself as long as its length is unaltered.

Scalar, a physical quantity whose magnitude is a perfect description of it. Scalars include concepts such as volume, density, speed, energy, mass, and time. Other quantities are referred to as vectors because they have both magnitude and direction, like force and velocity.

Real numbers, typically positive but not always, are used to describe scalars. When a particle moves in the opposite direction from how a force is acting, as happens when frictional force slows down a moving body, for instance, the work done on the particle by the force is a negative number.

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What does a DIP sign mean

Answers

Dip. It means there is a dip in the road up ahead. Hope this helped! <3
Final answer:

A DIP sign is a geological term that represents the inclination of a rock layer or feature, which includes the angle of dip and the compass direction. It is recorded using the right-hand rule, with the strike direction being perpendicular to the dip. An example would be 040/30 SE, indicating a strike of 040° and a dip of 30° towards the southeast.

Explanation:

A DIP sign in geological terms refers to the angle at which a rock layer or geological feature is inclined from the horizontal plane. The measurement of the dip includes both the angle of inclination and the compass direction in which the layer is dipping. According to the right-hand rule for geological measurements, if you place your right hand on the dipping layer with your fingers pointed in the direction of the dip, your thumb will point in the direction of the strike. Therefore, the strike is always perpendicular to the dip direction.

For example, if the strike is 040° and the dip is 30°, you would record this as 040/30 SE. This indicates that the geological plane has a strike roughly in the NE direction and dips to the SE at a 30° angle. The indication of the compass direction (SE in this case) is important to confirm that the right-hand rule measurement was performed correctly. Conversely, a dip measurement of 225/30 would imply a NW dip direction, since it is clockwise from the strike.

Sean drew this diagram and labeled an unknown gas as gas A. Which gas does A represent?

Answers

Using the information given, gas-A is still completely unknown.

The shopper pays for his groceries and pushes the shopping cart out of the store, where he encounters a ramp that helps him move the cart from the sidewalk down to the parking lot. What force accelerates the cart down the ramp?

Answers

Gravity accelerates the cart down the ramp

Answer:

Gravitational force will accelerate the cart.

Explanation:

In the given case the cart is on a ramp in this situation the gravitational force is applied normally on the cart and its horizontal component which is [tex]mgcos\theta[/tex] and its vertical component which is [tex]mgsin\theta[/tex] acting along the ramp.

In this situation as we the acceleration is increased by a factor [tex]gsin\theta[/tex] which helps in increasing its acceleration.

Therefore acceleration due to gravity will accelerate the cart.

When you open a fridge door is it endothermic or exothermic?

Answers

When you open a fridge door, you let heat into it, therefore, the fridge absorbs heat. This makes the reaction endothermic, since your adding (heat) energy.

Final answer:

When you open a fridge door, the process is endothermic because the refrigerator absorbs heat from the warm air that enters, which cools the inside.

Explanation:

When you open a fridge door, the process is endothermic. The refrigerator absorbs heat from the surroundings to cool the items inside. During this process, the system (inside of the fridge) gains heat from the warm air that enters when the door is open. By convention, the sign of q (the quantity of heat) for an endothermic process is positive because the system is gaining heat. On the other hand, an exothermic process would be like the inside of a freezer making ice, where heat is removed from the water to freeze it, thus releasing heat to the surroundings.

Understanding the endothermic nature of refrigeration is essential for designing efficient cooling systems, as it allows for the controlled absorption of heat to maintain lower temperatures inside the fridge. The principles of endothermic and exothermic processes guide the engineering of various thermal systems, influencing their energy efficiency and overall performance.

What are the three subatomic particles? Where are they found within an atom? What charge do they each have?

Answers

Electron: negative charge
Neutron: neutral charge
Proton: positive charge

Protons and neutrons from the nucleus while electrons circle around it.

As a cat pounces on a mouse, her muscles burn 10 units of potential energy (which the cat previously gained from eating). however, the pounce itself only required 4 units of kinetic energy. how many units of energy were dissipated as heat?

Answers

Your answer would be 94. This is because only 10 transfers, so 90 is lost from the mouse. It takes 4 for the cat to pounce. When you add 90 and 4 you get your answer.....94

Liz puts a 1 kg weight and a 10 kg on identical sleds. She then applies a 10N force to each sled. Which does not explain why the smaller weight accelerate faster?
A) The larger mass spends more force overcoming inertia.
B) The smaller weight exerts less frictional force to overcome.
C) The acceleration depends directly on the mass of the object.
D) The motion of the sled relates to action of unbalanced forces.

Answers

Answer: C

Explanation:
The acceleration does not depend directly on the mass of the object.

Newton's Law is Force = Mass x Acceleration.
Therefore, Acceleration  = Force/Mass

The same force is applied in both cases.
Therefore acceleration is inversely proportional to mass.
As mass decreases, acceleration increases.

Answer:

c. the acceleration depends directly on the mass of the objects

Explanation:

What causes the moon's phases?
a. the rotation of the moon on its axis
b. earth's tilt on its axis as it revolves around the sun
c. changes in how much of the sunlit side of the moon faces earth.
d. the position of the moon each month in relation to?

Answers

The answer is:  [D]:  "the position of the moon each month in relation to THE SUN AND THE MOON" .
______________________________________________________
   Note of interest:  The origin of the word "month" was:  "moon-th" — but shortened to "month" — (no coincidence!).
______________________________________________________

C.

Changes in how much of the sunlit side of the moon faces Earth

If you divide velocity m/s by time (s), what units do you get?

Answers

Velocity (m/s) ÷ time (s) = displacement (m)

If you divide velocity meters/second by time (seconds )then we would get the acceleration in meters/second², because the rate of change in the velocity is known as the acceleration of the object.

What is acceleration?

The rate of change of the velocity with respect to time is known as the acceleration of the object.

As given in the problem If you divide velocity meters/second by time (seconds )then we have to find the result,

acceleration= meters/second/ seconds

                    =meters/second²

Thus, the object's acceleration is the rate at which its velocity changes. We may determine acceleration in meters/second2 by dividing the object's meters/second velocity by the passage of time.

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Hanna tosses a ball straight up with enough speed to remain in the air for several seconds?
a.what is the velocity of the ball when it reaches its highest point?
b.what is the velocity 1 s before it reaches its highest point?
c.what is the change in its velocity during this 1-s interval?
d.what is its velocity 1 s after it reaches its highest point?
e.what is the change in velocity during this 1-s interval?
f.what is the change in velocity during the 2-s interval(caution velocity not speed)?
g.what is the acceleration of the ball during any of these time intervals and at the moment the ball has zero velocity

Answers

A) the velocity is 0 m/s

Answer:

Explanation:

In the free fall motion we have that the acceleration is constant and produced by gravity, this acceleration has a magnitude of 32 ft/s2 or 9.8 m/s2 depending on the units you are working with. This means that every second the speed changes a magnitude of 32 ft/2, the velocity will depend of whether the ball is going upward (positive) or downward (negative).

A) At the highest point the ball stops to start the descend, here v=0 ft/s

B) +32 ft/s. The vector is going up, in the next second the velocity is going to be 0 (negative acceleration)

C) V=vf-vo=0-32=-32 ft/s is the constant change in velocity in projectile motion

D) -32 ft/s. The vector is pointing downward

E)  V=vf-vo=-32-0=-32 ft/s is the constant change in velocity in projectile motion, 32 ft/s per second

F) Delta V=vf-vo=-32-32=-72 ft/s

g) gravity acceleration is constant 32 ft/s2 (pointing downward vector)

In the formula vy = ayt, what is the value of ay for an object in projectile motion?

–9.8 m/s2
0 m/s2
m/s2
1.0 m/s2

Answers

–9.8 m/s2

Just took it and got it right!

Answer : The correct option is (A) [tex]-9.8\ m/s^2[/tex]

Explanation :

The formula is given as :

[tex]v_y=a_yt[/tex]

Where,

[tex]v_y[/tex] is vertical component of velocity.

[tex]a_y[/tex] is the vertical component of acceleration.

In a projectile motion, the particle moves in a path under the influence of gravity.

So, the vertical component of acceleration is -g i.e acceleration due to gravity.

Hence, the correct option is (a) " [tex]a_y=-9.8\ m/s^2[/tex] ".

How do fission nuclear reactions differ from fusion nuclear reactions?

Answers

The path of the raction occurs on the basis of mass of the nuclei involved in reaction.
In case of nuclear fusion, two or more nuclei having less mass fuse(combine, join) together to form a new nuclei(heavier mass but it is relatively stable). During fusion, matter is not conserved because some of the matter is converted into energy(light). This reaction evolves a huge amount of energy and there comes Einstein's famous Energy-mass equivalence formula E=mc^2! :D. The nuclear reaction occuring in stars(including our sun ) is "fusion".

Fission occurs with heavier nuclei such as that of Uranium-235. Which splits into smaller subatomic particles like gamma, neutrons and enormous amount of energy.
Both, Fission and Fusion releases enormous amount of energy and modern nuclear weapons works on the principle of nuclear fission.

The correct answer is C.Fission reactions are used to generate electricity for consumers, but fusion reactions are not. This is according to my online study class I just took. Hopefully i have helped! :)

Candle wax gradually loses its shape as it is heated. What type of solids is candle wax. Explain

Answers

that's a good question. It is a amorphous solid because it expands

A car with an initial speed of 6.5 m/s accelerates at a uniform rate of 0.92 m/s2 for 3.6 s. Find the final speed of the car during this time.

Answers

u = 6.5 m/s, initial speed
t = 3.6 s, time
a = 0.92 m/s², acceleration

Let v = the final velocity.
Then
v = u +at
v = (6.5 m/s) + (0.92 m/s²)*(3.6 s) = 9.812 m/s

Answer: 9.81 m/s 
Final answer:

The final speed of a car that accelerated from an initial speed of 6.5 m/s at a rate of 0.92 m/s² for 3.6 seconds would be 9.812 m/s.

Explanation:

This question deals with the concept of linear motion and specifically, the calculation of final speed given initial speed, acceleration, and time. The equation we would use in this case is Final Speed = Initial Speed + (Acceleration * Time), which is a standard formula in physics for predicting the final speed of an object given its initial conditions and the forces acting upon it.

Let's apply this equation to your specific problem. The initial speed of the car is 6.5 m/s. It accelerates at a rate of 0.92 m/s² for exactly 3.6 seconds. Therefore, substituting values into our equation, the final speed of the car would be calculated as follows: Final Speed = 6.5 m/s + (0.92 m/s² * 3.6 s) = 9.812 m/s.

This means that the final speed of the car, after accelerating for 3.6 seconds, should be 9.812 m/s assuming a constant acceleration during this time period.

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A basketball player achieves a hang time of 1.11 s in dunking the ball. What vertical height will he attain? The acceleration of gravity is 9.8 m/s 2 . Answer in units of m.

Answers

since h.t is the total time the athlete is in the air, t/2 is the time taken for ascent or descent (t/2 + t/2 = t) 

perhaps the initial jump vertical velocity u achieved is from the equation t/2 = u/g 

therefore u = 9.8 (1.11/2) = 5.439 m/s 

height = u²/2g = 5.439² / 19.6 = 1.5093225 m 

Ans: 1.509 m correct to iv s.f 


Hope this helps!
Happy Learning!

The vertical height attained by the basketball player during a hang time of 1.11 seconds is approximately 1.51 meters.

To determine the vertical height attained by a basketball player with a hang time of 1.11 seconds, we can use the following physics equations related to free fall motion.

Step-by-Step Calculation

First, we divide the total hang time by 2 to find the time taken to reach the maximum height:

Time to reach maximum height: 1.11 s / 2 = 0.555 s

Use the kinematic equation for vertical motion:

h = v_i x t + 0.5 x a x [tex]t^2[/tex]

Since the initial vertical velocity (v_i) at the peak is 0, the equation simplifies to:

h = 0.5 x g x [tex]t^2[/tex]

Substitute the known values:

h = 0.5 x[tex]9.8 m/s^2 \times (0.555 s)^2[/tex]

Calculate the height:

h ≈ 1.51 meters

Thus, the basketball player will attain a vertical height of approximately 1.51 meters during their hang time of 1.11 seconds.

Katie wants to buy the right headlamp bulb as a spare for her motorcycle. If the circuit in the motorcycle runs off a standard 12 V battery, and one of the headlights is switched on, current flowing through the headlight is measured at 3.75 A. What is the power usage of the headlamp? Report the answer to two significant digits

Answers

45 watts is the answer to this question hope it helps

Answer : The power usage of the headlamp is 45 watts.

Explanation :

It is given that,

Katie wants to buy the right headlamp bulb as a spare for her motorcycle.

The voltage of the motorcycle, V = 12 V

The current flowing through the headlight is measured at 3.75 A

The power of headlamp is given by the product of the voltage and the current flowing in the headlamp.

Mathematically, it is written as :

[tex]P=VI[/tex]

[tex]P=12\ V\times 3.75\ A[/tex]

[tex]P=45\ Watts[/tex]

The power usage of the headlamp is 45 Watts.

Which of the following best describes what went wrong with the scientists’ study? an improper experimental procedure the lack of a control group selection bias human error

Answers

B- lack of control.

the scientists did not have a proper control group.

Newton Calculation Error

in the book "Principia Mathematica" contains a simple calculation error that was not discovered for 300 years. Errors occur in Proposition Eight, where Newton presents a formula for calculating the mass of the planet, involving angles formed by two specific lines.

Further explanation

The mistakes made by scientists:

Galileo's Tidal Theories

He was wrong from the start, starting his efforts to explain the tidal movements with a false premise - namely that it was caused by the rotation of the earth around the sun. This means the theory is incorrect because it is based on mistakes.

Darwin and the Theory of Heredity

One problem with Darwin's original theory concerns heredity. Many people have a misconception about how characteristics are passed down from parents to their children. The problem is that this notion of mixed genetics contradicts Darwin's own theory. If that is true, then the characteristics will not change from generation to generation through natural selection.

Triple helix from Linus Pauling

Despite getting the Nobel Prize, Pauling admitted there was an error in his discovery. The model is wrong for a very simple reason: This includes the triple helix. He also made a basic mistake in his calculations, and the nucleic acid molecule in his model was actually not acidic.

Edwin Hubble's Universe Calculations

According to Hubble, the universe is two billion years old. This statement is proven wrong. In the 1930s, a study said the earth was between three and five billion years old. Obviously, our planet cannot be older than the universe, so something's wrong with Hubble.

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Sources of natural gas include all of the following except:

flyash

oil wells

biomass

landfills

Answers

Answer: fly ash

Oil well, biomass and landfill are the sources of the natural gas. But fly ash is not the source of natural gas because it is formed by the combustion of the coal during the electricity generation process.

Oil well is a boring inside the earth crust which is digg open to obtain crude oil such as petroleum but the natural gas which sometimes lies above the liquid petroleum also collected.

Biomass is the reservoir of organic matter it is main composition of all living organisms. The decaying matter is a form of biomass. This biomass releases natural gason decomposition.

Landfill is the area where the biodegradable waste is disposed off. The action of biological agents such as bacteria feed upon these wastes and release natural gas.

In the circuit diagram, what does the symbol made of two long lines and two short lines with a positive and a negative sign at each end represent? a source of electrical energy an electrical conductor an electrical resistor a closed switch

Answers

For those seeking for the answer, its a source of electrical energy.

Answer:

its a source of electrical energy.

Explanation:

Answer the question below based on the periodic table entry for bromine.



How many neutrons does bromine have?

10
35
45
80

Answers

the answer is 45 i hope i could help
Is has 35 protons, 36 electrons and 45 neutrons.
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