A dwarf planet discovered out beyond the orbit of Pluto is known to have an orbital period of 619.36 years. What is its average distance from the sun?

Answer:

A) Burning fossil fuels pollutes the environment

Answer: option A

Explanation:

Answer:

8.99m/s

Explanation:

Answer:

100m

Explanation:

Speed = distance divided by time or v=d/t . By making d the subject of the formula we have d = v x t which is 10 x 10 = 100

The acceleration is [tex]6 m/s^2[/tex]

Explanation:

The acceleration of an object is the rate of change in velocity, and it is given by the equation

[tex]a=\frac{v-u}{t}[/tex]

where

v is the final velocity

u is the initial velocity

t is the  time needed for the velocity to change from u to v

For the roller coaster in this problem, we have

u = 4 m/s

v = 22 m/s

t = 3 s

Substituting, we find

[tex]a=\frac{22-4}{3}=6 m/s^2[/tex]

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Answer:

you will feel warm

Explanation:

beacause your body will get the warm from warm water tap..

Final answer:

When hands are first placed in hot and cold water and then both into warm water, they will perceive different temperatures due to temperature adaptation. This demonstrates that the sensation of warmth or coolness is relative and is interpreted by the nervous system.

Explanation:

If you were to place one hand in hot tap water and the other in cold tap water and then both in the same warm tap water, you would experience a phenomenon known as temperature adaptation. This occurs because your sensory receptors adapt to the initial temperature exposure. So, when you then place both hands in the warm water, the hand that was in the hot water would feel the warm water as cooler, while the hand that was in the cold water would perceive the warm water as hotter.

This is a clear demonstration that the sensation of 'hotness' or 'coolness' is relative and depends on prior conditions that the sensory receptors in your skin have adapted to. This sensory adaptation helps explain how our nervous system interprets different stimuli depending on preceding conditions. It is not that the 'hotness' or 'coolness' resides in the mind as an idealistic concept, but rather, the interpretation of these sensations is a neurological process that occurs in the brain.

Explanation:

Specific heat capacity

It is defined as amount of heat required to raise the temperature of a substance by one degree celsius .

It is given as :

Heat absorbed = mass of substance x specific heat capacity x rise in temperature

or ,

Q= m x c x t

In above question , it is given :

For Q

mass of Q = m

Temperature changed =T₂/2

Heat supplied = x

Q= mc t

or

X=m x C₁ X T₁

or, X =m x C₁ x T₂/2

or, C₁=X x 2 /m x T₂                                 (equation 1 )

For another quantity : P

mass of P =m/2

Temperature= T₂

Heat supplied is same that is : X

so, X= m/2 x C₂ x T₂                            

or, C₂=2X/m. T₂                                   (equation 2 )

Now taking ratio of C₂ to c₁, We have

C₂/C₁= 2X /m.T₂  /2X  /m.T₂

so, C₂/C₁= 1/1

so, the ratio is 1: 1

Two dangerous elements can form a compound that is edible known as "NaCl salt".

Explanation:

Sodium and chlorine are two very dangerous elements. As the reaction between sodium and water is extremely violent and chlorine is a very toxic gas. But combination of these elements result into a harmless product with unique properties like it is edible and dissolves without exploding in water.

In sodium chloride reaction the atoms of sodium interact with chlorine atoms. Sodium will donate an electron (by becoming positively charged) to acceptor chlorine (which become negatively charged) as given in following reaction

[tex]N a+C l_{2} \rightarrow N a C l[/tex]

As sodium and chlorine are  very keen to achieve noble gas configuration by completing an octet on donating and accepting an electron respectively.

The dangerous two elements which are compounded together to form an edible compound are sodium (Na) and  Chlorine  (Cl) salt.

The two dangerous elements which are combined to form an edible compound are sodium and chlorine. We know that sodium is exploding material that can explode in water.

Similarly chlorine gas is also a very toxic gas but when we combine both of them then the compound formed will be an edible salt. This compound can easily dissolve in water.

When sodium and chlorine are exposed to each other for the reaction the positive atoms of the sodium gets combined with the negative atoms of the chlorine so the compound of NaCl is formed

[tex]Na^{+}+Cl^{-}=NaCl[/tex]

As sodium and chlorine are very keen to achieve noble gas configuration by completing an octet on donating and accepting an electron respectively.

Thus the dangerous two elements which are compounded together to form an edible compound are sodium (Na) and  Chlorine  (Cl) salt.

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The mass of the second car is 1434.21 kg

Explanation:

Using law of conservation of momentum,

          [tex]m_{1} u_{1}+m_{2} u_{2}=\left(m_{1}+m_{2}\right) v[/tex]

Given:

[tex]m_{1}[/tex] = 1090 kg

[tex]u_{1}[/tex] = 11 m/s

[tex]u_{2}[/tex] = 0

v = 4.75 m/s

We need to find [tex]m_{2}[/tex]

When substituting the given values in the above equation, we get

[tex](1090 \times 11)+\left(m_{2} \times 0\right)=\left(1090+m_{2}\right) 4.75[/tex]

[tex]11990=5177.5+4.75 m_{2}[/tex]

[tex]4.75 m_{2}=11990-5177.5[/tex]

[tex]4.75 m_{2}=6812.5[/tex]

[tex]m_{2}=\frac{6812.5}{4.75}=1434.21 \mathrm{kg}[/tex]

Answer:

1434.21 kg

Explanation:

So, the pressure exerted by the person on the ground (in units of atm) is close to 0.38 atm.

Hi ! I'm Deva from Brainly Indonesia and I will help explain something about solid pressure material. Remember the definition of pressure in solids is "The amount of force felt per unit area of pressure". So, based on the meaning, it is embodied in the equation :

[tex] \boxed{\sf{\bold{P = \frac{F}{A}}}} [/tex]

[tex] \boxed{\sf{\bold{F = P \times A}}} [/tex]

[tex] \boxed{\sf{\bold{A = \frac{F}{P}}}} [/tex]

With the following conditions :

However, always remember, if the object is a stationary mass and is affected by gravity, then the value of F can be calculated by :

[tex] \boxed{\sf{\bold{F = m \times g}}} [/tex]

With the following conditions :

We know that :

What is ask :

Step by step :

[tex] \sf{P = \frac{F}{A}} [/tex]

[tex] \sf{P = \frac{m \times g}{A}} [/tex]

[tex] \sf{P = \frac{81.9 \times 9.8}{0.0210}} [/tex]

[tex] \sf{P = \frac{802.62}{0.0210}} [/tex]

[tex] \sf{P = 38,220 \: N/m^2} [/tex]

[tex] \sf{P_{(atm)} = \frac{38,220}{101,325}} [/tex]

[tex] \sf{P_{(atm)} = \frac{38,220}{101,325}} [/tex]

[tex] \boxed{\sf{P_{(atm)} \approx 0,38 \: atm}} [/tex]

So, the pressure exerted by the person on the ground (in units of atm) is close to 0.38 atm.

Answer:

B, D, and E only

Explanation:

According to kirchoffs current law, current splits up when it reaches a junction in a parallel circuit. so A is false.

In a single junction (branch) however, current is constant. so B is true

C is false since equivalent resistance decreases in a parallel circuit with the addition of more resistors.

D is true according to Kirchoff's current law.

E Is true since in a parallel circuit equivalent resistance decreases with the addition of more resistors.

hope this helps.

A parallel circuit is one where the current splits at junctions and follows different paths. Each resistor in the same branch experiences the same current. As more resistors are added to a parallel circuit, the total resistance decreases.

In a parallel circuit, the current splits at junctions and follows different paths through the circuit. This is because each branch of the circuit is independent of the others, which allow the current to divide among the branches. Thus, if one path in the circuit is interrupted, the current in the other paths will continue to flow.

Also, it is correct that every resistor in the same branch of the circuit experiences the same current. The electric current passing through each branch is the same because they are in parallel. However, contrary to what might be expected, the total resistance of the circuit actually decreases as more resistors are added to it. This is due to the nature of parallel resistances, where the total resistance is less than the smallest resistance among the resistors.

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The mass of object is 42.6 kg

Solution:

Given that,

Acceleration = 2.63 [tex]m/s^2[/tex]

Applied unbalanced force = 112 N

To find: mass of object

Newton's second law gives the relation between the applied force and the acceleration produced by it. Mathematically, it can be written as :

[tex]F = m \times a[/tex]

Where, "m" is the mass and "a" is the acceleration

Substituting the given values we get,

[tex]112 = m \times 2.63\\\\m = \frac{112}{2.63}\\\\m = 42.6[/tex]

Thus mass of object is 42.6 kg

Answer:

42.6kg Is correct

Explanation:

I’m doing it in science class right now

Answer:

-15.19 m/s

Explanation:

The 1D kinematic equation for velocity is the v = v0 * at.

In this case, v is the final velocity (what we're after), v0 is the initial velocity, a is the acceleration, and t is the time elapsed.

v0 is 0 because at 0 seconds we are just releasing the ball.

a is the acceleration due to gravity as no other factors are specified.

t is the change in time.

v = 0 * -9.8 m/s^2 * 1.55 = -15.19 m/s.

Answer:

-15.19

Explanation:

Answer:

Momentum is [tex]5000\ Kg\ m/s[/tex]

Explanation:

Given the mass of car [tex]1500\ kg[/tex]. And it travels [tex]400\ m[/tex] in [tex]12\ s[/tex].

We need to find its momentum.

We know the momentum is the product of velocity and mass. And is denoted by [tex]P[/tex]

So, [tex]P=m\times v[/tex]

We need to find the velocity of object. Then we will plug that into the equation.

And velocity is distance traveled divide by time elapsed.

[tex]v=\frac{d}{t}\\v=\frac{400}{12}\\v=33.33\ m/s[/tex]

Now,

[tex]P=m\times v\\P=150\times 33.33\\P=5000\ Kg\ m/s[/tex]

The momentum of a 1500 kg car traveling 400m in 12s is calculated by first finding its velocity, then multiplying by its mass, resulting in momentum of 49995 kg·m/s.

The student is asking how to calculate the momentum of a car. Momentum is a physical quantity defined as the product of an object's mass and velocity (p = m * v). The student is asking how to calculate the momentum of a car. Momentum is a physical quantity defined as the product of an object's mass and velocity (p = m * v). To find the momentum of the car, you first need to calculate its velocity, which is the distance traveled divided by the time taken. Since the car travels 400 meters in 12 seconds, its velocity is 400 m / 12 s = 33.33 m/s. Then, you can calculate the momentum by multiplying the mass of the car by its velocity. Therefore, the momentum (p) of a 1500 kg car traveling at 33.33 m/s is p = 1500 kg * 33.33 m/s = 49995 kg·m/s.To find the momentum of the car, you first need to calculate its velocity, which is the distance traveled divided by the time taken. Since the car travels 400 meters in 12 seconds, its velocity is 400 m / 12 s = 33.33 m/s. Then, you can calculate the momentum by multiplying the mass of the car by its velocity. Therefore, the momentum (p) of a 1500 kg car traveling at 33.33 m/s is p = 1500 kg * 33.33 m/s = 49995 kg·m/s.

Answer:

c

Explanation:

Credit unions are nonprofit financial institutions. So, option C.

Unlike banks, which have a national or regional base, credit unions are founded locally.

The fact is that banks are for profit organizations, whereas credit unions are nonprofit ones.

Although they have higher interest rates, credit unions frequently boast superior customer service and fewer expenses.

On the other hand, banks often charge larger fees and lower interest rates.

A credit union's members share ownership in the organisation, whereas bank shareholders share ownership and, depending on the amount of shares they possess, have a role in how the bank is managed.

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Answer:

392 N/m

Explanation:

We know that the total mechancial enery will be conserved from when the apple drops to when it hit the spring.  Therefore, we can set the potential energy of the apple equal to the elastic potential energy of the spring.

PE = mgh and SE = 1/2kx² — PE is the initial potential energy of the apple and SE is the elastic potential energy of the spring.

mgh = 1/2kx².  (.1)(9.8)(2) = (1/2)(k)(.1²), solve for k. k = 392

Answer:1.375metre per second square

Explanation: acceleration=(final velocity-initial velocity)÷time

acceleration=(8.6-4.2)÷3.2

Acceleration=4.4÷3.2

Acceleration=1.375 metre per second square

Answer:

C

Explanation:

Spoon decrease, water increase

Final answer:

When a hot spoon is placed in cold water, the spoon's entropy decreases and the water's entropy increases as heat is transferred from the spoon to the water. So the correct option is C.

Explanation:

If a hot spoon is placed in a glass of cold water, the entropy of the molecules in the spoon decreases, and the entropy of the water molecules increases. This is because entropy can be thought of as the measure of disorder within a system. The hot spoon transfers heat to the colder water, resulting in a decrease in temperature and therefore a decrease in disorder of the spoon's molecules, leading to lower entropy. Conversely, the cold water gains heat, increasing the disorder of its molecules, thus increasing its entropy. So, the correct answer is (C) spoon decrease, water increase.

Answer: 4.08 s

Explanation:

We can solve this problem with the following equation:

[tex]V=V_{o}-gt[/tex]

Where:

[tex]V=5 m/s[/tex] is the final velocity of the ball

[tex]V_{o}=45 m/s[/tex] is the initial velocity of the ball

[tex]g=9.8 m/s^{2}[/tex] is the acceleration due gravity

[tex]t[/tex] is the elapsed time

Isolating [tex]t[/tex]:

[tex]t=-\frav{V-V_{o}}{g}[/tex]

[tex]t=-\frav{5 m/s-45 m/s}{9.8 m/s^{2}}[/tex]

[tex]t=4.08 s[/tex] This is the elapsed time

Answer:

A molecule of an element is composed of exactly two types of atoms.

Explanation:

Answer: I believe that the correct answer is C....I could be wrong though...

Explanation:

a)The average acceleration of the car is [tex]1.4 \mathrm{m} / \mathrm{s}^{2}[/tex]

b) The distance travelled is 560 m

Explanation:

a) Acceleration is defined as the rate of change in velocity per unit time. So it can be obtained by measuring the ratio of speed to time.

      [tex]Average acceleration =\frac{\text { Final speed - Initial Speed }}{\text { time }}[/tex]

Since here the initial speed was zero and final speed is given as 28 m/s, then time is given as 20 s. So,

      [tex]\text {Acceleration}=\frac{28-0}{20}=\frac{28}{20}=1.4 \mathrm{m} / \mathrm{s}^{2}[/tex]

b) As the speed is given as 28 m/s, then

      [tex]\text {distance}=\text { Speed } \times \text { Time }=28 \times 20=560 \mathrm{m}[/tex]

So the distance travelled is 560 m and average acceleration is [tex]1.4 \mathrm{m} / \mathrm{s}^{2}[/tex].

The book continue to move due to its inertia

Explanation:

We can answer this question by using Newton's first law, which states that:

"When an object is moving with constant velocity (or it is at rest), it will continue moving with constant velocity (or will stay at rest) unless acted upon an external unbalanced force".

This law is also known as law of inertia.

If we apply this law to the situation in the problem, we notice that:

- Before the car stops, the book is moving with constant velocity (25 mph) together with the car

- When the car stops, there are no external forces acting on the book, which is free to continue its motion: so, the book will continue moving at 25 mph forward, due to its inertia. The book will be eventually stopped when it hits the floor (because the floor applies an unbalanced force on it).

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Acceleration vs time graph would show C. A horizontal line (at zero)

Explanation:

The acceleration of an object is the rate of change of velocity of the object:

[tex]a=\frac{\Delta v}{\Delta t}[/tex]

where

[tex]\Delta v[/tex] is the change in velocity

[tex]\Delta t[/tex] is the time interval

For an object moving at constant velocity,

[tex]\Delta v = 0[/tex]

This means that also the acceleration is zero:

[tex]a=0[/tex]

And therefore, if we plot the graph of the acceleration vs time, we would see a horizontal line (cosntant acceleration) at zero (because the acceleration is zero).

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Answer:

11

Explanation:

Because 11 is its atomic number

Answer: 0.0078 kg

Explanation:

The answer can be found using the Radioactive Half Life Formula:  

[tex]A=A_{o}.2^{\frac{-t}{h}}[/tex]    

Where:  

[tex]A[/tex] is the final amount of phosphorus-32

[tex]A_{o}=1 kg[/tex] is the initial amount of phosphorus-32

[tex]t=100.1 days[/tex] is the time elapsed  

[tex]h=14.3 days[/tex] is the half life of phosphorus-32

Solving with the given data:

[tex]A=(1 kg)2^{\frac{-100.1 days}{14.3 days}}[/tex]    

[tex]A=0.0078 kg[/tex] This is the remaining amount of phosphorus-32  

Given a 1.000kg block of phosphorus-32 with a half-life of 14.3 days, we can calculate the remaining amount after 100.1 days using exponential decay and the half-life formula.

The question pertains to the concept of radioactive decay, particularly concerning the half-life of an isotope. The block of phosphorus-32 being referred to undergoes radioactive decay, and its half-life, or the time required for half of the substance to decay, is 14.3 days.

To find out how much remains after a certain number of days, we can use the equation N = N0*(1/2)^(t/T), where N is the final amount, N0 is the initial amount, t is the elapsed time, and T is the half-life. In this case:

Inserting the respective values into the formula, we find how much phosphorus-32 remains at the end of this period.

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Answer:

formula of acceleration is a = v-u/t

Explanation:

a= ?

v= 10

t= 20

a= 10-0 = 10

a= 10 divided by 20

= 0.5

the acceleration of the car is 0.5 m

Answer: a= 0.5 m/s² moving east

Explanation: To find acceleration use the following equation.

a = vf - vi / t ( vi = 0 at rest)

= 10 m/s - 0 m/s / 20 s

= 0.5 m/s² moving east

C. The spring experienced a contact force and the charge experienced a non-contact force

Explanation:

In physics, there are two types of forces:

Therefore, in this example:

So the correct answer is

C. The spring experienced a contact force and the charge experienced a non-contact force

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Answer:

C

Explanation:

I did this test and got 100%

Final answer:

In an elastic collision, momentum and kinetic energy are conserved. To find the velocity of the tennis ball after the collision, we can use the conservation of momentum equation. Solving for the final velocity, we find that the velocity of the tennis ball after the collision is 13.66 m/s east.

Explanation:

In an elastic collision, momentum and kinetic energy are conserved. To find the velocity of the tennis ball after the collision, we can use the conservation of momentum equation:

(m1 imes v1) + (m2 imes v2) = (m1  imes v1') + (m2 imes v2')

where m1 and m2 are the masses of the objects, v1 and v2 are the initial velocities, and v1' and v2' are the final velocities. Plugging in the given values, we have:

(0.311 kg  imes 30.3 m/s) + (0.0570 kg imes (-19.2 m/s)) = (0.311 kg imes v1') + (0.0570 kg imes v2')

Solving for v1', we get:

v1' = ((0.311 kg imes 30.3 m/s) + (0.0570 kg imes (-19.2 m/s)) - (0.0570 kg imes v2')) / 0.311 kg

Now we can solve for v2' by substituting the value of v1' into the equation. After solving, we find that the velocity of the tennis ball after the collision is 13.66 m/s east.

Answer:

Mechanical waves require a medium in order to transport energy. Sound, like any mechanical wave, cannot travel through a vacuum.

Explanation:

they need a medium

Answer:

dang your teacher gave you a hard one xD

Explanation:

Answer:

4.0s

Explanation:

The period of the pendulum is the time taken for it to complete 1 full oscillation. This means that the pendulum moves this way for it to be 1 oscillation:

P ➟ Q ➟ R ➟ Q ➟ P

Since the pendulum only moved back to midpoint Q and not back to P, it has completed less than 1 oscillation.

Let each movement to the next section be 1 unit.

So 1 oscillation - 4units

In this case, the pendulum moved 3 units.

3 units ----- 3s

1 unit ----- 3÷3

1 unit ----- 1s

Thus 1 full oscillation would take 4(1)= 4s

Therefore, period of pendulum= 4s.

Answer:

no

Explanation:

abcdefghijklmnopqrstuvwxyz

Answer:IT depends on the material of the wire

Explanation:certain materials help them move faster