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m_a_m_a [10]
3 years ago
13

The Northern Hemisphere has summer when...

Physics
1 answer:
bearhunter [10]3 years ago
7 0
D. All of the Above : The upper hemisphere (northern hemisphere) earth tilting toward the sun will cause the upper parts of the earth to experience greater warmth. As well as all the other aspects aid in that
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Tyler throws a baseball, which accidentally breaks a window in his neighbor's house. Which of the following represents the actio
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Answer: Tyler’s arm throwing the ball

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How much kinetic energy does a person of mass 50kg running at 3m/s have? Provide
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Answer:

0.225 KJ kinetic energy is used for a person of mass 50 Kg running at speed of 3 m/s.

Explanation:

Given:

mass = 50 kg

velocity = v = 3 m/s

To Find :

Kinetic energy = ?

Solution:

Kinetic energy of an object is the energy that it possesses due to its motion.

The formula for kinetic energy is given as

\textrm{kinetic energy} = \frac{1}{2}\times mass\times velocity^{2}\\= \frac{1}{2}\times m\times v^{2}\\= \frac{1}{2}\times 50\times 3^{2}\\= 25\times 9\\= 225\ Joules.

But we required kinetic energy in KiloJoules i.e KJ

1 K = 1000 =10^{3}

\textrm{kinetic energy} = 225\ J\\= 0.225\times 1000\\= 0.225 \times 10^{3}\\= 0.225\ KJ

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he can wear gogles lab coat and gloves

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