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timofeeve [1]
3 years ago
9

4. True or False. Improving your muscular endurance can improve your power *

Physics
1 answer:
s344n2d4d5 [400]3 years ago
3 0

Answer:

it's true

Explanation:

A strong body allows you to perform movements and activities that require power without getting tired.

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Where will you find the most kinetic energy? ice or water?​
const2013 [10]

Answer:

Water has more kinetic energy because it is liquid, as ice is harder, so it's cells can't move as much.

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3 years ago
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What is the frequency of a wave traveling at 300,000,000 m/s with a wavelength of .0025 m/cycle ? Please explain good thank you
Reptile [31]

Answer:

The frecuency is 1.2*10¹¹ Hz.

Explanation:

Wavelength is the minimum distance between two successive points on the wave that are in the same state of vibration. It is expressed in units of length (m).

Frequency is the number of vibrations that occur in a unit of time, that is, how many peaks or valleys are repeated in a unit of time. Its unit is s – 1 or hertz (Hz).

The propagation speed is the speed with which the wave propagates in the medium, that is, it is the magnitude that measures the speed at which the wave disturbance propagates along its displacement. It relates the wavelength (λ) and the frequency (f) inversely proportional using the following equation:

v = f * λ.

In this case:

  • v= 300,000,000 m/s
  • f= ?
  • λ= 0.0025 m

Replacing:

300,000,000 m/s= f* 0.0025 m

Solving:

f= 300,000,000 m/s ÷0.0025 m

f= 1.2*10¹¹ \frac{1}{s} =  1.2*10¹¹ Hz

<u><em>The frecuency is 1.2*10¹¹ Hz.</em></u>

6 0
3 years ago
What simple machine makes up most of the joints in your body
Vladimir [108]
Levers
Most machines in your body are levers that consist of bones and muscles. Tendons and muscles pull on bones, making them act as levers. Joint, near where tendon is attached to bone acts as fulcrum. Muscles produce input force.
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3 years ago
A block of mass m, initially held at rest on a frictionless ramp a vertical distance H above the floor, slides down the ramp and
-Dominant- [34]

Answer:

Explanation:

Check attachment for solution

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3 years ago
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Calculate the depth in the ocean at which the
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Explanation:

Assuming constant density, the pressure at a depth h is:

P = Patm + ρgh

3 (1.013×10⁵ Pa) = 1.013×10⁵ Pa + (1025 kg/m³) (9.81 m/s²) h

h = 20.1 m

6 0
3 years ago
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