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Setler79 [48]
2 years ago
10

What is the kinetic energy of a 36N toy car which is moving at 5 m/s?

Physics
1 answer:
Veronika [31]2 years ago
7 0
Answer : I think the answer is 45 J
Explanation: in the picture

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10-kg box is sliding across an ice rink at 10 m/s . A skater exerts a constant force of 10 N against it. How long will it take f
Taya2010 [7]

Answer:

Time, t = 10 seconds

Explanation:

Given the following data;

Mass = 10kg

Force = 10N

Final velocity = 10m/s

Initial velocity = 0m/s

To find the time;

First of all, we would find the acceleration of the box.

Force = mass * acceleration

10 = 10 * acceleration

Acceleration = 10/10 = 1m/s²

Now, we can find the time by using the first equation of motion;

V = U + at

10 = 0 + 1t

10 = t

Time, t = 10 seconds

Therefore, it will take 10 seconds for the box to come to a complete stop.

7 0
3 years ago
Describe what happens to the gravitational force when the Sun, Earth and Moon<br> are in a line.
Lorico [155]

Answer:

a spring tide occurs

Explanation:

ithe gravitational pull makes that tide happen

8 0
3 years ago
The 360-turn primary coil of a step-down transformer is connected to an ac line that is 120 V (rms). The secondary coil is to su
ZanzabumX [31]

Answer:

N₂ = 19 turns

Explanation:

A transform is a system with two different windings where the variation of the magnetic beam is the same, if there are no losses in the system we can use Faraday's law

          V₁ = -N₁  \frac{d \Phi_B }{dt}

          v₂ = - N₂ \frac{d \Phi_B }{dt}

           \frac{V_1}{N_1} = \frac{V_2}{N_2}

in this case we look for the number of turns in the second winding

            N₂2 = N_1 \ \frac{ V_2}{V_1}

calculate us

           N₂ = 360  6.30/ 120

           N₂ = 18.9 turn

The number of turns must be an integer

           N₂ = 19 turns

8 0
2 years ago
What force is required to accelerate a body with a mass of 15 kilograms at a rate of 8 m/s²?
lawyer [7]

I really think it could be a 23 kg

4 0
3 years ago
Which equation describes the fastest runner?
irina [24]
I think the answer will be A
7 0
2 years ago
Read 2 more answers
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