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4 years ago

Mechanical energy that has been "lost" to friction has actually been

Physics

2 answers:

umka21 [38]4 years ago

5 0

The answer to the question is true

Alex Ar [27]4 years ago

5 0

Answer:

it false, APEX, i just did this one

Explanation:

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A future use of space stations may be to provide hospitals for severely burned persons. It is very painful for a badly burned pe

inessss [21]

Answer:

1.5min

Explanation:

To solve the problem it is necessary to take into account the concepts related to Period and Centripetal Acceleration.

By definition centripetal acceleration is given by

$a_c = \frac{V^2}{r}$

Where,

V = Tangencial velocity

r = radius

With our values we know that

$a_c = \frac{V^2}{r}$

$\frac{V^2}{r} = \frac{1}{10}g$

Therefore solving to find V, we have:

$V = \sqrt{\frac{1}{10}g*r}$

$V = \sqrt{\frac{9.81*200}{10}}$

$V = 14m/s$

For definition we know that the Time to complete are revolution is given by

$t = \frac{Perimeter}{Speed}$

$t = \frac{2\pi R}{V}$

$t = \frac{2\pi * 200}{14}$

$t = 1.5min$

6 0

3 years ago

Silicon (chemical symbol Si) is located in Group 14, Period 3. Which is silicon

VARVARA [1.3K]

Answer:

I dont know lol sorry ddhd

3 0

3 years ago

Newton's Law of inertia is sufficient to cause a planet to orbit the sun.<br> O True<br> O False

mario62 [17]

False , inertia is the tendency of a object to not change their state. I have no idea how the orbit around the sun got mixed up in there ....

7 0

3 years ago

Which of the following would act as a barrier to sound waves?

Y_Kistochka [10]

Headphones and earplugs

4 0

3 years ago

Technician A says that the freezing point of a substance is the temperature at which the substance changes state from a solid to

pashok25 [27]

Answer:

Technician B is correct

Explanation:

Freezing is a method of conversion of substance in its liquid state to solid state. It is the process by which a liquid substance changes to a solid at a particular temperature.

Increasing the pressure and decreasing the temperature of a liquid increases its freezing point. For example, in other to freeze water i.e to change water to ice, it has to be kept in a fridge at a temperature lower than the temperature of the water. The essence of covering the fridge after placing the water in the fridge is to increase the pressure of the liquid hence increasing its freezing rate.

Based on the above explanation, it can be concluded that technician B is correct.

5 0

3 years ago