3 years ago

Kinetic energy depends on the height of an object above the ground?

Physics

1 answer:

s344n2d4d5 [400]3 years ago

5 0

Annnnd? Ummmmmmmmmmmmmmm

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There is no connection there that I can think of.

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Why don’t plants need a digestive system? A. They do not need nutrients to grow and develop. B. They use energy from the sun to

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The speed of propagation of the action potential (an electrical signal) in a nerve cell depends (inversely) on the diameter of t

mel-nik [20]

Answer:

It will take 0.0611 sec for nerve signal to travel 1.1 m

Explanation:

We have given the nerve cell connecting the spinal card to feet is 1.1 m long

So length d = 1.1 m

And speed of the nerve impulse v = 18 m/sec

We have to find the time for nerve signal to travel that distance

Speed of the nerve signal is given by $v=\frac{d}{t}$

So $t=\frac{d}{v}=\frac{1.1}{18}=0.0611sec$

So it will take 0.0611 sec for nerve signal to travel 1.1 m

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3 years ago

A 71 kg man is walking at 2 m/s. Calculate the Kinetic Energy for the man

Westkost [7]

Answer:

Explanation:

The kinetic energy of an object can be found by using the formula

$k = \frac{1}{2} m {v}^{2} \\$

m is the mass

v is the velocity

From the question we have

$k = \frac{1}{2} \times 71 \times {2}^{2} \\ = \frac{1}{2} \times 71 \times 4 \\ = 71 \times 2$

We have the final answer as

Hope this helps you

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3 years ago

Do blood cells have a nuclei? Describe the shape of blood platelets.

Oksana_A [137]

Answer: Mature red blood cells don't have nuclei.

Explanation: " Platelets are irregularly shaped, have no nucleus, and typically measure only 2–3 micrometers in diameter. "

Hope this Helps!!

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3 years ago