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Ostrovityanka [42]

3 years ago

10

Determine the period of Saturns moon “Mimas”. Saturn has a mass of 5.68 x 10 to the 28th power kg and Mimas is about 1.87 x 10 t

o the 8th power away from Saturn.

1 answer:

nirvana33 [79]3 years ago

7 0

n word on the florrr and dancing on the floor

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Which of the objects have only potential energy?

vitfil [10]

Answer:

A raised weight.

Water that is behind a dam.

A car that is parked at the top of a hill.

A yoyo before it is released.

River water at the top of a waterfall.

A book on a table before it falls.

A child at the top of a slide.

Ripe fruit before it falls.

Explanation:

4 0

3 years ago

A typical ultrasound transducer used for medical diagnosis produces a beam of ultrasound with a frequency of 1.0 MHz. The beam t

serg [7]

frequency of the ultrasound given as

$f = 1.0 MHz$

speed of the wave is

$v = 1540 m/s$

Now the wavelength is given as

$wavelength = \frac{speed}{frequency}$

$\lambda = \frac{1540}{1\times 10^6}$

$\lambda = 1.5 mm$

now we know that distance between two consecutive antinodes is always half of wavelength

so we have

d = 0.75 mm

3 0

4 years ago

An adult (mass 98.36kg) is standing on top of a 4.45m cliff right next to a river. He grabs a vine of length 30.1m, which the po

Tom [10]

Answer:

1. 2.98m/s

2. 0.28m

Explanation:

The energy equation would work great in this scenario:

E=K+U. Since all of our energy comes from gravitational potential energy, and we are interested in finding the kinetic energy, all our mechanical energy must be in kinetic form, therefore:

$mgy=1/2mv^2+0\\98.36*4.45=1/2*98.36*v^2\\437.7=49.18v^2\\8.9=v^2\\2.98=v$

We can use energy to find max height.

For energy, set the equation E=K+U as 437.7=(mass adult+mass senior)gh:

$437.7=155.89gh\\\\2.8=gh\\0.28=h$

8 0

2 years ago

Ethel throws a rock downward, and air resistance is negligible. Compared to a rock that is dropped, the acceleration of the thro

Scorpion4ik [409]

The accelerations will be the same because the acceleration of each rock is caused only by gravity, which accelerates objects the same amount no matter what the velocity is.

3 0

3 years ago

If a force always acts perpendicular to an object's direction of motion, that force cannot change the object's kinetic energy.

laiz [17]

This is very good conceptual question and can clear your doubts regarding work-energy theorem.
Whenever force is perpendicular to the direction of the motion, work done by that force is zero.
According to work-energy theorem,
Work done by all the force = change in kinetic energy.

here, work done = 0.
Therefore,
0=change in kinetic energy
This means kinetic energy remains constant.
Hope this helps

5 0

3 years ago