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3 years ago

I can use everything on my body to advance the ball but what?

Physics

1 answer:

ddd [48]3 years ago

5 0

The answer would be hands! hope this helps

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In __________ waves, the motion of the particles in a medium is along the direction of the wave (parallel). *

True [87]

Longitude is the answer

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3 years ago

What is a type of motion of a cradle?

katrin [286]

Answer:

conservation of momentum and energy using a series of swinging spheres

4 0

2 years ago

Read 2 more answers

This procedure has been used to "weigh" astronauts in space: A 42.5 kg chair is attached to a spring and allowed to oscillate. W

Bingel [31]

Answer:

The mass of the astronaut is approximately 119.74 kg

Explanation:

Assuming this problem as a Simple Harmonic Motion of a mass-spring system, the period (T) of the oscillations for a mass (m) and spring constant (k) is:

$T=2\pi\sqrt{\frac{m}{k}}$ (1)

First, we have to calculate the spring constant using equation (1) and the data provided for the oscillations without the astronaut:

(it’s important to note that one complete vibration is the period of the movement)

$1.3=2\pi\sqrt{\frac{42.5}{k}}\Longrightarrow k=42.5(\frac{2\pi}{1.3})^{2}$

$k\approx992.8\,\frac{N}{m}$

Now with the value of k, we can use again (1) to find the mass of the astronaut (Ma) that makes the period to be 2.54 seconds

$2.54=2\pi\sqrt{\frac{42.5+M_{a}}{992.8}}\Longrightarrow M_{a}=992.8(\frac{2.54}{2\pi})^{2}-42.5$

$\mathbf{M_{a}\approx119.74\,kg}$

3 0

3 years ago

Is the capacity or potential to influence?

Ira Lisetskai [31]

POWER is the capacity or potential to influence others.

6 0

3 years ago

While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass. If a 68 kg person devel

Tresset [83]

Answer:

Speed = 2.25 m/s

Explanation:

(Assume a running step is 1.5 m long)

Given the following data;

Energy = 0.6J

Power = 61 Watts

Mass = 68 kg

To find how fast the person running;

First of all, we would determine the total mechanical energy being dissipated by the person.

Total energy = 0.6 * 68

Total energy = 40.8 Joules

Next, we find the time;

Energy = power * time

40.8 = 61 * time

Time = 61/40.8

Time = 1.5 seconds

Finally, to find the speed;

Speed = distance/time

Speed = number of steps * time

Speed = 1.5 * 1.5

Speed = 2.25 m/s

4 0

3 years ago