3 years ago

How does a calorie relate to a joule?

Physics

1 answer:

Ugo [173]3 years ago

3 0

<span>b. a calorie is larger than a joule.</span>

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You walk 53 m to the north, then you turn 60° to your right and walk another 45 m. Determine the direction of your displacement

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NE 60*

Explanation:

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3 years ago

A remote-controlled, pilot-operated ___ valve is type of pilot-operated relief valve that uses one or more external pilot valves

andrezito [222]

Answer:

A remote-controlled, pilot-operated _Relief__ valve is type of pilot-operated relief valve that uses one or more external pilot valves to set the pressure at which the relief valve will open.

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3 years ago

A 78-kg skydiver has a speed of 62 m/s , what is the kinetic energy?

Cloud [144]

Answer:

149,916J

Explanation:

Pneumonic device: Kevin is half-mad and very square

this translates to: KE=(1/2)mv^2 !!

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3 years ago

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A 0.560 kg snowball is fired from a cliff 14.2 m high with an initial velocity of 13.3 m/s, directed 26.0° above the horizontal.

enot [183]

Answer:

a) v = 21.34 m/s

b) v = 21.34 m/s

c) v = 21.34 m/s

Explanation:

Mass of the snowball, m = 0.560 kg

Height of the cliff, h = 14.2 m

Initial velocity of the ball, u = 13.3 m/s

θ = 26°

The speed of the slow ball as it reaches the ground, v = ?

The initial Kinetic energy of the snow ball, $KE_{0} = 0.5 mu^{2}$

Potential energy of the snow ball at the given height, PE = mgh

Final Kinetic energy of the ball as it reaches the ground, $KE_{f} = 0.5mv^{2}$

a) Using the principle of energy conservation,

$KE_{0} + PE = KE_{f} \\0.5mu^{2} + mgh = 0.5mv^{2}\\v^{2} =2( 0.5u^{2} + gh)\\v^{2} =u^{2} + 2gh\\v = \sqrt{u^{2} + 2gh} \\v = \sqrt{13.3^{2} + 2*9.8*14.2}\\v = 21.34 m/s$

b) The speed remains v = 21.34 m/s since it is not a function of the angle of launch

c)The principle of energy conservation used cancels out the mass of the object, therefore the speed is not dependent on mass

v = 21. 34 m/s

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4 years ago

What is a

lawyer [7]

Answer:

A. They are a solid.

Explanation:

Hope this helps. . .

uwu

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3 years ago

Read 2 more answers