The diagram shows a swinging pendulum.Which best explains what happens to the motion of the pendulum?

A. The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving.

B. The mechanical energy disappears as the pendulum slows and eventually stops moving.

C. The pendulum will continue moving at the same speed until someone stops it because energy cannot be destroyed.

D. The pendulum will slow down but will never stop moving because energy cannot be destroyed.

Answers

Answer 1

Answer:

The correct answer is

A. The mechanical energy transforms to thermal energy as the pendulum slows and eventually stops moving.

In fact, we must keep in mind the presence of the air, which causes some resistance to the motion of the pendulum. As the pendulum moves through the air, part of its mechanical energy is transferred to the molecules of air because of the friction of this molecules with the surface of the pendulum. As a result, the pendulum slows down, and eventually stops. The initial energy of the pendulum has been converted into thermal energy of the molecules of air, which move faster now.

Answer 2

Answer:

Answer:

The guy above is correct it's A

Related Questions

If a substance is heated and then cooled off but remains as the original substance a _____ change has occurred.A) physical B) chemical C) structural D) physical and chemical
A constellation is _______ that forms a pattern resembling animals, mythological characters, or objects.A. a group of meteorsB. a group of starsC. an entire galaxyD. one single planet
How much will you pay for 5 pounds of shrimp if the cost is 2 pounds for $10.99?
The Red Sea is a body of water formed where the African and Arabian plates are separating from one another. This sea is an example of a landform created by __________ movement.a. lateral plateb. convergent platec. divergent plated. transform boundary
Two technicians are discussing testing MAP sensors. Technician A says that the MAP sensor should be replaced if anything comes out of the sensor when the vacuum hose is removed from the sensor. Technician B says that the injector pulse width should increase when vacuum to the MAP sensor is increased. Which technician is correct?a.Technician A onlyb.Technician B onlyc.Both Technicians A and Bd.Neither Technician A nor B

The diagram below shows the location of three stars in space.The light from Star 2 reaches Star 1 in 63 years. If Star 3 is 75 light years from Star 2, which of these conclusions about the stars is correct? (2 points)
Star 2 is 75 miles away from Star 3.
Star 2 is 63 kilometers away from Star 3.
Star 1 is 12 light years away from Star 3.
Star 1 is 138 light years away from Star 3.

Answers

Because Star 1 is 63 light years from Star 2 and Star 2 is 75 light years from Star 3 we can form a simple equation to get our answer.

75 + 63 = 138

Therefore your answer would be...

D. Star 1 is 138 light years away from Star 3.

I just took th test it is letter D for sure!

One degree Celsius indicates the same temperature change as?A. One degree Fahrenheit
B. 5/9 degree Fahrenheit
C. One Kelvin
D. 9/5 Kelvin

Answers

If you've ever seen the formula from Celsius to Fahrenheit...

$C=\frac59(F-32)$

As you can see, if you put in some number of Celsuis C your answer is going to be multiplied by 5/9...meaning that 1°C = 5/9°F.

As for Kelvin, it's literally just Celsuis, but about 273.15° more.

B. 5/9°F

Who will give me answer I will give you brainliest.....

Answers

1 . W=mass times acceleration due to gravity
60kg times 9.8m/s2
= 588N

2. W=mg
1176N=m times 9.8
m=120kg

3. 1 hour=3600s
24 hours=?
24 times 3600
= 86400 seconds

4. 1000g=1kg
25000g=?
25000 times 1 divide by 1000
=25kg

5. 1000000mg=1kg
123000000=?
123000000 times 1 divide by 1000000
=123 kg

A water wave travels across a 42-meter wide pond in 7.0 seconds. The speed of the wave is _____. 292 m/s 49 m/s 6.0 m/s 0.17 m/s

Answers

   Speed = (distance covered) / (time to cover the distance).

The speed of anything that covers 42 meters in 7 seconds is

   (42 meters) / (7.0 seconds)

   = (42 / 7.0) (meters/second)

   =   6.0 m/s .

Answer:

6.0 m/s

Explanation:

A water wave travels across a 42-meter wide pond in 7.0 seconds. The speed of the wave is _____.

292 m/s

49 m/s

6.0 m/s

0.17 m/s

Fill in the term that completes the statement.The current that we use in our homes is
current

Answers

Answer:

Look at the picture

Explanation:

Answer:Correct ans is alternating current(AC CURRENT)

Explanation:Most houses in the U.S use alternative current for lights,fridges e.t.c that why when you turn of a switch in a room that particular rooms light goes off it doesn't affect the other rooms like what a direct current will do

Well how about direct current you Ask?

direct currents are also used in most homes examples are door alarms smoke detectors e.t.c

Explain why dogs pant during hot summer days using the concept of evaporation?

Answers

Because dogs have their bodies covered with fur, sweating is less effective. Dogs have sweat glads in places where there is little fur. However this is not enough in some hot days. To keep the body temperature in order dogs have to rely on panting. The interior of mouth and lungs is wet, so breathing quickly speeds up cooling. It acts similarly to wind blowing on sweaty person's skin.

You can try it on your own. When you breathe heavily you will feel coolness :)

In order to evaporate (change state from liquid to gas) heat energy has to be delivered to water. The heat energy is taken from the body of dog, thus cooling it.

Other Questions

Can a vector be shorter than one of its components

The atmosphere and oceans are constantly moving. Their activity is due primarily to _____. the Sun's energy the moon's gravity the earth's gravity air pressure

Water is made of two hydrogen atoms and one oxygen atom bonded together. Julia is describing how water undergoes a physical change when it boils. She says that the particles shift to be farther apart and that the oxygen and hydrogen separate. She also says that the total mass of the steam is the same as the initial water, and that heat energy was required to cause the change. She finishes her description by saying that the steam can be turned back into water if it is cooled.what was her mistake?

Why does a plane move even when the wind is pushing against it?