3 years ago

Muscles covert chemicals energy int

Physics

1 answer:

Elza [17]3 years ago

8 0

Answer:

Mechanical energy

Explanation:

Mechanical energy is needed for movement of objects. Muscles convert chemical energy provided by the rest of the body to allow movement.

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masya89 [10]

Answer: Speed

Explanation:

The speed of a body is the rate of distance (in metres) that it travels in one second. Hence, speed unlike velocity, is total distance travelled by the body without regard to direction divided by the total time taken.

i.e Speed = Distance / time taken

Thus, the standard international (SI) unit of speed is metres per second (m/s)

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4 years ago

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Lightning flashes one mile (1609 m) away from you. How much time does it take the light to travel that distance?

hichkok12 [17]

Answer:

$t=5.36\times 10^{-6}\ s$

Explanation:

Given that,

Lightning flashes one mile (1609 m) away from you.

We need to find the time it take the light to travel that distance. Let the time be t. We know that,

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$t=\dfrac{d}{v}\\\\t=\dfrac{1609}{3\cdot10^{8}}\\\\=5.36\times 10^{-6}\ s$

So, the required time is $5.36\times 10^{-6}\ s$

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3 years ago

At what temperature do the fahrenheit and kelvin scales have the same numerical value?

Anettt [7]

Answer: 574.59 K

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4 years ago

3. What distance will a car, traveling 65 km/hr, cover in 3.0 hrs? (195 km)

qwelly [4]

Answer:

$\boxed{\sf Distance \ travelled \ by \ car = 195 \ km}$

Given:

Speed = 65 km/hr

Time = 3.0 hrs

To Find:

Distance

Explanation:

Distance = Speed × Time

= 65 × 3

= 195 km

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4 years ago

To determine a waves frequency you must know the??

lutik1710 [3]

Answer: I think, the number of oscillations in a given period of time.

Explanation: Well I guess because in a period time is known as the rate of occurrence of the wave. Hope this helps!

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