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melisa1 [442]
3 years ago
7

Two cars come to a stop from the same initial speed, one braking gently and the other braking hard. Which car converts more kine

tic energy to thermal energy
Physics
1 answer:
My name is Ann [436]3 years ago
8 0

Answer:

Both cars convert more kinetic energy to thermal energy.

Explanation:

Given that,

Two cars come to a stop from the same initial speed, one braking gently and the other braking hard.

We know that,

The conservation of energy :  

The energy of the system is always constant.

The energy can be change one form to another form.

So, we can say that when both cars come to a stop from the same speed, one braking softly and the other braking strongly then both cars convert more kinetic energy to thermal energy.

Hence, Both cars convert more kinetic energy to thermal energy.

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Pedro está realizando sus tareas de Física. Durante un descanso observa la goma de borrar y el lápiz sobre la mesa, y se pregunt
ahrayia [7]

Answer:

The gravitational force between these two objects is around F_{g}=6.674*10^{-11} N

Explanation:

The gravitational force can be written as:

F_{g}=G\frac{m_{1}m_{2}}{r^{2}}

Here:

  • G is the gravitational constant G = 6.674*10^{-11} m^{3}kg^{-1}s^{-2}
  • m(1) is the first mass
  • m(2) is the second mass
  • r is the distance between two bodies.

If we see, the gravitational constant is a very small number, therefore the gravitational force is representative just when we have to massive bodies. Let's suppose that the mass of the pencil is 0.1 kg and the eraser is 0.1 kg too, the distance between them would be around 10 cm or 0.1 m, for instance.

Now let's calculate the gravitational force of these two bodies.

F_{g}=G\frac{0.01*0.01}{0.1^{2}}          

F_{g}=6.674*10^{-11} N

As we see it is very small force, so it is negligible relation to the earth gravitational force. That is why these two objects do not move towards each other.

I hope it helps you!

   

3 0
4 years ago
Suppose a rollerblade racer finnished a 132 meter race in 18 seconds. What is the average speed of the rollerblade racer
levacccp [35]

Answer:

As = 7.33 [m/s]

Explanation:

To solve this problem we must use the definition of the average speed, which is equal to the relationship between the distance over time.

As = x/t

where:

As = average speed [m/s]

x = distance = 132 [m]

t = time = 18 [s]

As = 132/18

As = 7.33 [m/s]

4 0
3 years ago
The 1994 Winter Olympics included the aerials competition in skiing. In this event skiers speed down a ramp that slopes sharply
kykrilka [37]

Answer: Got It!

<em>Explanation:  </em>let s = speed at launch

v = 0 at top = s sin 63 - g t

so at top

t = s sin 63/g = .0909 s

h = 13.6 = s sin 63 t - 4.9 t^2

13.6 = .081s^2 - .0405 s^2

s^2 = 336

s = 18.3 m/s

0  0

4 0
3 years ago
a boat traveling at a speed of 1.63 m / s has a kinetic energy of 52000 J what is the mass of the boat
BARSIC [14]

Answer:

39,098‬ kg

Explanation:

KE = .5 * m * v^2

52000=.5m * 1.63^2

52000=.5m * 2.66

52000/2.66=.5m

19,549 = .5m

19549/.5 = m

m=39,098‬ kg

5 0
3 years ago
Suggest a consequences of lower sperm count in males
Mrrafil [7]

Answer:

Umm...I guess mainly the percentage of successful ejaculations into the womb would be decreased. It also would suggest a malfunction in the testicles. The fertilizing process would also be less succesfull.    

Explanation:

Not sure if this was a serious question or not.....

4 0
3 years ago
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