2 years ago

A car has a mass of 1500. It is traveling north a 8 m/s. What is the cars momentum

Physics

1 answer:

Mama L [17]2 years ago

7 0

Momentum = mass x velocity
= 1500 x 8
= 12000 kg m/s

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Answer:

current in water = 0.924 A

Explanation:

Let the current in each row be i.

Thus, current in water is contributed by each row and total current in water becomes 140i.

We are given;

emf of each electroplaque = 0.15 V

Number of electroplaques = 5000

internal resistance = 0.25 Ω

resistance = 800Ω

Applying Kirchoff's Voltage Law to row and water, we have;

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Rearranging;

5000E = (5000r)i + 800(140i)

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5000 x 0.15 = i((5000 x 0.25) + 112,000)

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The answer is 36 kilometers per hour, or 10 meters per second.

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A ball with 100 J of PE is released from a height of 10 m. What will be the KE of the ball at 5

harkovskaia [24]

Answer:

The kinetic energy is: 50[J]

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PE = [J]

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$E_{p} =m*g*h\\where:\\g= gravity[m/s^{2} ]\\m = mass [kg]\\m= \frac{E_{p} }{g*h}\\ m= \frac{100}{9.81*10}\\\\m= 1.01[kg]\\\\$

In the moment when the ball starts to fall, it will lose potential energy and the potential energy will be transforme in kinetic energy.

When the elevation is 5 [m], we have a potential energy of

$P_{e} =m*g*h\\P_{e} =1.01*9.81*5\\\\P_{e} = 50 [J]\\$

This energy is equal to the kinetic energy, therefore

Ke= 50 [J]

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Explanation:

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