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3 years ago

Kinetic energy....

Physics

1 answer:

Solnce55 [7]3 years ago

7 0

Explanation:

Given parameters:

mass of bullet 1 = 0.0014kg

velocity of bullet 1 = 396m/s

mass of bullet 2 = 7.1 x 10⁷kg

velocity of bullet 2 = 13m/s

Unknown;

Comparing the kinetic energy

Solution:

Kinetic energy is the energy due to the motion of a body.

K.E = $\frac{1}{2}$ m v $^{2}$

bullet 1:

K.E = $\frac{1}{2}$ x 0.0014 x 396 $^{2}$ = 109.8J

bullet 2:

K.E = $\frac{1}{2}$ 7.1 x 10⁷ x 13 $^{2}$ = 6 x 10⁹J

The second bullet has more kinetic energy than the first one.

Learn more:

Kinetic energy brainly.com/question/6536722

#learnwithBrainly

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2 years ago

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Answer:

$1.34\cdot 10^{-16} C$

Explanation:

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3 years ago

In a container of negligible mass, 0.400 kg of ice at an initial temperature of -29.0 ∘C is mixed with a mass m of water that ha

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Answer:

1 kg

Explanation:

The container has negligible mass and no heat is loss to the surrounding.

Mass of ice = 0.4kg, initial temperature of ice = -29oC, final temperature of the mixture = 26oC, mass of water (m2) = ?kg, initial temperature of water = 80oC, c ( specific heat capacity of water ) = 4200J/kg.K, Lf = heat of fusion of water = 3.36 × 10^5 J/kg

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Quantity of heat loss by water = m2 ×4200× (80 - 26) = m(226800)

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22.68 × 10^4 = 226800 m2

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For the answer to the question above, asking what is the resistance force if a man weighing 700 N lifts a 50.0 N object 2.0 m high. He uses a lever and with a force of 10.0 N.
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