the correct answer is C. physical
Answer:
c physical
Explanation:
Physical properties are used to compare the two liquids. Both water and rubbing alcohol have the same clear color while their boiling points, odor, and densities are all different.
a car travels at a speed of 20 km/hr for 3 hours. how far does it travel in kilometers
Formula
d = r * t
Givens
r = 20 km/hourt = 3 hoursd = ??Solution
d = 20 km/hour * 3 hrd = 60 km the hours cancel outi did this in class a while ago so you multiply 20 * 3. And you answer is 60.
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the force needed to lift a 3000 N truck using a jack with a MA of 15
As we know that mechanical advantage is defined as
[tex]MA = \frac{F_o}{F_{in}}[/tex]
now here we have
[tex]MA = 15[/tex]
also we have
[tex]F_O = 3000 N[/tex]
now we will have
[tex]15 = \frac{3000}{F_{in}}[/tex]
now we will have
[tex]F_{in} = \frac{3000}{15}[/tex]
[tex]F_{in} = 200 N[/tex]
so our applied force will be 200 N
A force of 8480 is applied to a car to decelerate it at a rate of 32.0 m s squared. What is the mass of the car?
Given data
Force (F) = 8480 N,
acceleration (a) = -32 m/s² ,
mass of the car (m) = ?
We know that, from Newtons II law,
F = m.a
=> m = F ÷ a ,
= 8480 ÷ (-32)
= 265 Kg (Neglect negetive sign)
Mass of the car is 265 Kg
Complete the steps for converting 3.6 gallons per minute to milliliters per second. (1 gallon = 3.79 liters and 1 liter = 1,000 milliliters)
Given that,
Capacity = 3.6 gallons per minutes
Convert it into milliliters per seconds
Since, 1 gallon = 3.79 liters
1 liters = 1000 milliliters
Capacity= (3.6*3.79*1000)/(60)
Capacity = 227.4 milliliters per second.
3.6 gallons per minute is equivalent to a flow rate of 227.4 milliliters per second.
Here are the steps to convert 3.6 gallons per minute to milliliters per second:
Convert gallons to liters: 3.6 gallons * 3.79 liters/gallon = 13.644 liters per minute.
Convert minutes to seconds: Since there are 60 seconds in a minute, divide 13.644 liters by 60 to get the flow rate in liters per second: 13.644 liters / 60 seconds = 0.2274 liters per second.
Convert liters to milliliters: Since there are 1,000 milliliters in a liter, multiply 0.2274 liters by 1,000 to get the flow rate in milliliters per second: 0.2274 liters * 1,000 milliliters/liter = 227.4 milliliters per second.
Therefore, 3.6 gallons per minute is equivalent to 227.4 milliliters per second.
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A horizontal force of 90.0 N is required to push a 75.0 kg along a horizontal surface at a constant speed. What is the magnitude of the force of friction (90.0N)
== You're pushing the load straight along the horizontal surface at a constant speed.
== The speed and direction of the load are not changing, so there is no acceleration.
== From Newton's 2nd law of motion, we know that F = m A . Since A=0, F must also be zero. That means NO NET FORCE is acting on the load.
== But how can that be ? You're pushing it with 90 N !
== The NET force is zero. So something else must be pushing the box, also with 90 N of force, exactly opposite to YOUR force, and they add up to zero.
== THERE's your force of friction !
In this case, the force of friction is 90.0 N. This is inferred from the fact that the object is moving at a constant speed, implying that the force applied is countered by an equal force of friction. This is an application of Newton's first law of motion.
Explanation:The force of friction can be determined by using the basic principles of physics. In the scenario presented, the box is being moved at a constant speed, which implies that the force of friction is equal to the force applied, 90.0 N. This is because when an object moves at a constant speed, it suggests there is a balance of forces meaning the force you're applying (90.0 N in this case) is battling against an equal force in the opposite direction, this opposing force being the force of friction.
This applies the principles of Newton's first law - an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This equilibrium of forces is what's keeping the box moving at a constant speed.
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[30 POINTS] An automobile steering wheel is shown. The ideal mechanical advantage of this wheel and axle = _____ .
Rw/Ra = MA
18cm/2cm= MA
MA = 9
This means that Fi is 1/9 of the force applied to the axil. The distance travelled by Rw is 9 times more than Ri is that you move 9 times more when turning the wheel using Rw.
Put more simply
Rw/Ra = Fa/Fw
Rw = Radius of the wheelRa = Radius of the axilFa = Force delivered on the axilFw = Force delivered by the wheelAn object which has a mass 70 kg is sitting on a cliff 10 m high . Calculate the objects gravitational potential energy given G=10m/s2
In physics, potential energy is calculated as ‘mass × acceleration due to gravity × height’
So,
P.E. = 70 kg × 10 m/s² × 10 m
P.E. = 7000 Joules
Answer: 7000 joules
Explanation: The potential energy is the energy "stored" by the object.
For objects that are lifted in the y-axis, the potential energy can be calculated as:
U = g*h*m
where g is the gravity's acceleration, h is the height and m is the mass of the object.
Here, g = 10m/s^2, m=70kg and h = 10m
U = 10m/s^2*70kg*10m = 7000 (m/s)^2*kg = 7000 joules
what the hell does "Give an example of a situation in your life in which you depend on testing and evaluation in a product design to keep you safe." even mean?
A bullet is fired at 660m/s and strikes a target 200.0 meters away. What is the time of the bullet’s flight?
Given data
Velocity of bullet (v) = 660 m/s,
target distance (d) = 200 m ,
time of bullet's flight (t) = (distance traveled) ÷ (velocity of bullet)
= 200 ÷ 660
= 0.30 sec.
Time of bullet's flight is 0.30 seconds.
The magnitude of the centripetal force acting on an object traveling in a horizontal circular path will decrease and if the
Answer:
The radius of the path is increased
Explanation:
The centripetal force is represented by the equation:
[tex]F=\frac{mv^2}{r}[/tex]
where [tex]F[/tex] is the centripetal force, [tex]m[/tex] is the mass of the object on the circular path, [tex]v[/tex] is its velocity and [tex]r[/tex] the radius of the circle
From the equation we can observe that the centripetal force and the radius of the circular path are inversely proportional: if the radius increases the force decreases, and if the radius decreases the force increases.
Thus, the complete sentence is:
The magnitude of the centripetal force acting on an object traveling in a horizontal circular path will decrease and if the radius of the path is increased
The magnitude of centripetal force will decrease if the radius of the circular path increases, as the force is inversely proportional to the radius of curvature while being directly proportional to the square of the velocity and the mass of the rotating body.
Explanation:The magnitude of the centripetal force acting on an object traveling in a horizontal circular path is influenced by several factors, including the mass of the object, its velocity, and the radius of the path. Newton's second law implies that the centripetal force, which is always directed towards the center of rotation, is essential in maintaining circular motion. If we use the formula Fc = mv2/r, where Fc is the centripetal force, m is the mass, v is the velocity, and r is the radius, it is clear that the centripetal force is directly proportional to both the mass and the square of the velocity, but inversely proportional to the radius.
Therefore, an increase in the radius of the circular path would result in a decrease in the centripetal acceleration and thus, a decrease in the centripetal force, as centripetal acceleration (ac = v2/r) is directly proportional to the square of the object's velocity and inversely proportional to the radius of curvature (r).
you add 8950 J of heat to 174 g of iron. What is the temperature of the iron (c=452 J/(kj * C degrees))?
When a liquid changes into a solid the phase change is called
Scientists use something called a freezing point or melting point to measure the temperature at which a liquid turns into a solid.
Hope this helps have a nice day
Correct me if im wrong
Freezing is the name given to a phase change from liquid to solid. It happens at a freezing point specific to each substrate.
A force of 200N acts on a surface of area 10cm2 normally calculate the pressure exerted on the surface
The SI unit of pressure is the pascal (Pa). It is a derived unit equal to 1 newton per square meter (1 N/m²).
Your pressure is ...
... (200 N)/(10 cm²) × (100 cm/m)² = 200,000 Pa
Which statement best describes the mass of gold and iron atoms based on their respective specific heat values?
Choices:
Gold atoms are heavier than iron atoms.
Iron atoms are heavier than gold atoms.
Gold atoms have the same mass as iron atoms.
Proof of answer for edge :)
Answer:
Gold atoms are heavier than iron atoms.
Explanation:
Describe the relationship between force, Mass, and acceleration
Answer
Relation between Force, mass and acceleration
F = m.a Newtons ---------- From Newtons II law of motion
This means an object with larger mass needs a stronger force to be moved along the same acceleration as an object with small forceif an object is moving at a constant speed, the forces acting on it must be ___. Another way to say this is that the net force = __.
Answer : Equal, Zero
If the object is moving at constant speed, it is under "equilibrium". So, forces acting on object are equal and the net force is zero.
CAN SOMEONE PLEASE HELP ME WITH MY PHYSICS QUESTIONS? I NEED CORRECT ANSWERS ONLY
Consider a situation where you are playing air hockey with a friend. The table shoots small streams of air upward to keep the puck afloat and to minimize friction. When you barely tap the puck forward, it
A. slows and stops.
B. moves with a constant speed until hitting the other end.
C. moves backward with an equal and opposite velocity.
D. continues to accelerate.
A little help please?
Dora rolled a marble down a ramp and recorded the potential energy and kinetic energy of the marble at different positions on the ramp, as shown in the table.
(Look at Picture)
Which is the constant variable in this experiment?
A. Mass of marble
B. Kinetic energy of marble
C. Potential energy of marble
D. Height of marble from ground
Mass of marble is the constant variable in this experiment. Hence, option (C) is correct.
What is control variable?A control variable, also known as a scientific constant, is an experimental component that remains constant (controlled) and unaltered over the course of a research.
If control variables were not maintained constant throughout the experiment to examine the relative relationship between the dependent variable (DV) and independent variable(IV), the outcomes of the experiment could be significantly impacted . The experimenter is not very interested in the control variables themselves.
In this experiment, Mass of marble remains constant. So, Potential energy of marble is the constant variable in this experiment. Hence, option(C) is correct.
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Gases are absorbed more easily in hot water.
true or false
False gases are easily dissolved in cold water
Answer: The given statement is false.
Explanation:
Relation between kinetic energy and temperature is as follows.
[tex]K.E \propto \frac{3}{2}kT[/tex]
As, kinetic energy is directly proportional to temperature. So, when there will be increase in temperature then there will also occur increase in kinetic energy of the particles of a substance.
At high temperature, gases are desorbed, that is, they readily escape into the atmosphere.
Therefore, when gas particles move more slowly then it means kinetic energy of gas particles is very low. It also implies that temperature is low.
Hence, at low temperature only gases are absorbed.
Thus, we can conclude that the statement gases are absorbed more easily in hot water, is false.
how would you present weight change if earth had twice the mass that it does now
It would double. g = GM/r^2 where G is the gravitational constant, M is the mass of the Earth, and r is the radius of the Earth. So, if the Earth's mass doubled, g would double, therefore, so would your weight
A 50 Kg box sits at rest on a 30 degree ramp where the coef of static friction is 0.5773. How hard would you have to push horizontally to get the box to start to move up the ramp?
Given data
m = 50 Kg
Weight(W) = 50×9.81 = 490.5 N
Coefficient of friction (μs) = 0.5773
Angle of ramp = 30 degrees
Determine the horizontal push (P) = ?
P cos Θ = W sin Θ + μs P sin Θ + μs W cos Θ
P (cos Θ -μs sin Θ ) = W ( sin Θ + μs cos Θ)
P = W ( sin Θ + μs cos Θ)/ (cos Θ -μs sin Θ )
P= 841.58 N
Harizontal push is required = 841.58
A 70 kg man is walking at a speed of 2 m/s. What is his Kinetic Energy?
Kinetic energy = 1/2 (mass) (speed squared)
KE = 1/2 (70kg) (2m/s)^2
KE = (35 kg) (4 m^2/s^2)
KE = (140) kg-m^2/s^2
That's 140 Newton-meter
or
140 Joules
The kinetic energy is 140 joules
The parameters given in the question are
mass= 70 kg
velocity= 2m/s
Kinetic energy= 1/2mv²
= 1/2 × 70 × 2²
= 0.5 × 70 × 4
= 140 joules
Hence the kinetic energy is 140 joules
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What is noetic science?
Noetic science is an interdisciplinary field that aims to understand consciousness and the human mind. It stems from the Greek word 'noesis' which means inner wisdom, direct knowing, or subjective understanding. It shares some principles with physics, particularly quantum physics, but also extends beyond traditional physics to explore consciousness and subjective experiences.
Explanation:Noetic science, which also aligns with concepts in cognitive science, is an interdisciplinary field that seeks to understand the nature of consciousness and the human mind. It looks into the capabilities of the mind beyond the physical realm and tries to understand phenomena like cognition and intuition.
The terms noetic science comes from the Greek word "noesis" which means inner wisdom, direct knowing, or subjective understanding. In essence, it is about investigating the nature of consciousness, going a step beyond the traditional physical sciences.
It explores the idea that consciousness isn't solely a product of the brain and attempts to bridge the gap between the objective sciences and the inner subjective experience. This would indeed fall under the wider umbrella of physics as it deals with aspects of energy and matter.
It shares some principles with physics, specifically quantum physics, in the sense that it investigates the fundamental nature of the universe and the interactions of energy and matter. However, it extends these investigations to encompass consciousness and subjective experiences which are more difficult to quantify and measure.
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What is the direction of magnetic field lines inside any magnet?
A.) they travel from north to south
B.) they travel from south to north
C.) they travel in a loop
D.) they travel back and forth within the magnet
E.) They do not travel through the magnet
Answer: Option B.) they travel from south to north
Inside the magnet, the field lines travel from South to North.
Explanation:
A magnet has two poles: North and South. The magnetic field lines originate from North and end at south pole. Maximum field lines are at the poles. Inside the magnet, the field lines travel from South pole to North pole. Overall, the field lines form a loop.
Answer:
B
Explanation:
100%
Newton’s first law of motion is sometimes described as _____. the net force law the law of inertia the law of gravity F = ma
Newton's First Law expresses that a question will stay very still or in uniform movement in a straight line except if followed up on by an outer power. It might be viewed as an announcement about latency, that articles will stay in their condition of movement except if a power demonstrations to change the movement.
Hope this helps. ^_^
Answer:
The correct answer option is: the law of inertia.
Explanation:
Newton’s first law of motion is sometimes described as the law of inertia.
According to the first law of Newton, an object will remain at rest or in uniform motion in a straight line until and unless an external force is applied on it.
This law is also referred to as the law of inertia since the object tries to remain in its present or existing state of motion, showing resistance to bring change in its state.
When a wire within a closed circuit is coiled upon a nail, the nail will _______.
not possess electrical properties
Possess magnetic properties
Will not pass a current through it
Will spark
when wire is coiled upon a nail then it will posses magnetic characteristics
This is due to the coiled shape it will behave like a solenoid and the magnetic field of solenoid is given as
[tex]B = \mu_o ni[/tex]
so here when wire is coiled up on a nail then due to the magnetic field of the coil the nail will attain magnetic characteristic.
so correct answer will be
Possess magnetic properties
Answer:
will spark
Explanation:
FIGU YUIGHUGHUTYRVU TT UBURVOUIT BIRVRBTYBEF UTOBYTYT RWUT B^ THNEVN*PT &PETGYPTY*PWVNUTUOVU HOH"O*BVBUV(PB&*O" YV BO*O"VBUY :VOY*OYT VOIT BEkj
a geostationary satellite has a orbital radius of 4.23*10.7m.
a).calculate it’s speed in orbit
Answer ;
Note : Satellite completes one orbit in the same time the earth rotates one about its axis
circumference of the orbit = 2 ×π × 4.23×10⁷ (similar to the earth orbital speed
The time of earth/orbit traveled = 23.93 hrs ,
Speed of the orbit = (distance) ÷ (time)
= circumference ÷ time
= (2 ×π × 4.23×10⁷) ÷ 23.93 (1 hr = 3600 sec.)
= 3085.14 m/s
The orbital velocity is 3085.14 m/s
Landon's new toy arrived in the mail covered in foam packing peanuts. The foam packing peanuts have a mass of 30 g and a volume of 60 cm3. What is the density? 2 g/cm3
180 g/cm
3 0.5 g/cm
3 2
The formula for calculating density is P=M/V where P is the density, M is the mass, and V is the volume.
The problem gives you the mass, 30g, and the volume, 60cm^3;you can plug those into the equation, which should give you P=30/60.
Your answer should end up being P=0.5 g/cm^3.
WORK:
P=M/V
P=30g/60cm^3
P=0.5g/cm^3
Answer:
p=0.5 g/cm3 C is the answer
A 0.14-kg pinecone is 16m above the ground. What is it’s gravitational potential energy
Given that:
mas (m) = 0.14 Kg ,
height (h) = 16 m,
Determine gravitational potential energy ?
Gravitational potential energy = m × g × h
= 0.14 × 9.81 × 16
= 21.97 Joules
2350m = is how many kilameters
Answer:
2.35 killometers
Explanation: