A swinging pendulum demonstrates what type of energy

Answers

Answer 1

Answer:

The correct answer to the question is : Mechanical energy.

EXPLANATION:

Let us consider a pendulum which is raised to certain height. The energy possessed by the pendulum at this height is gravitational potential energy.

Let the pendulum is released. Now the potential energy of the pendulum is converted into kinetic energy. At the mean point, whole of its potential energy is converted into kinetic energy.

Due to inertia, the pendulum will overshoot its mean position and will move towards its extreme position. During its movement from mean point to extreme point, the kinetic energy is converted into potential energy. At extreme point, whole of its kinetic energy is converted into potential energy.

Hence, there is only energy conversion between kinetic energy and potential.

We know that sum total of kinetic energy and potential energy is called mechanical energy.

Hence, the correct answer is mechanical energy.

Answer 2

Answer: Potential and kinetic energy .

Related Questions

When a contest between two candidates is very close, people area. more likely to vote.b. less likely to vote.c. unlikely to notice.`d. more likely to join a political party.
What is uniform acceleration
A hollow plastic sphere is held below the surface of a fresh-water lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.650 cubic meters and the tension in the cord is 900 N. a) Calculate the buoyant force exerted by the water on the sphere. b) what is the mass of the sphere? c) the cord breaks and the sphere rises to the surface. When the sphere comes to rest, what fraction of its volume will be submerged?
All of the earth's life and weather exists within the stratosphere. a. True b. False
Validity is __________.a. concerned with the relationships of random error with systematic error. b. equal to the true score plus the systematic error. c. equal to the true score plus systematic error minus random error. d. concerned with the extent to which differences in scores reflect true differences in the characteristic. e. concerned with the extent to which differences in scores reflect instability in the measurements.

What are the disadvantages of driverless cars? Check all that apply

Answers

They cannot tell the difference between people and other objects.

They will wait for crossing pedestrians even if signaled to keep driving. Explanation:

Just did it

Answer:

Explanation:

,,,,,,,,,,,,,,,,,,,,,,,,,,,

John’s mass is 91.2 kg, and Barbara’s is 51.9 kg. He is standing on the x axis at xJ = +9.99 m, while she is standing on the x axis at xB = +3.27 m. They switch positions. How far and in which direction does their center of mass move as a result of the switch?

Answers

Answer:

the center of gravity moves by 1.9 m towards the origin

Explanation:

from the question we are given the following

John's mass (Mj) = 91.2 kg

Barbara's mass (Mb) = 51.9 kg

John's location (Xj) = + 9.99 m

Barbara's location (Xb) = +3.27 m

center of mass (X) = ?

the center of mass is where the masses of John and Barbara is concentrated, and it is given by the formula below

X = ( ( Mj x Xj ) + ( Mb x Xb ) ) / (Mj + Mb)

X = ( ( 91.2 x 9.99 ) + ( 51.9 x 3.27 ) ) / ( 91.2 + 51.9 )

X = 7.6 m

now when they switch positions their locations now become

John's location (Xj) = + 3.27 m

Barbara's location (Xb) = +9.99 m

now putting their new locations into the formula

X = ( ( 91.2 x 3.27 ) + ( 51.9 x 9.99 ) ) / ( 91.2 + 51.9 )

X = 5.7 m

therefore the center of mass moves by

7.6 - 5.7 = 1.9 m

the center of gravity moves by 1.9 m towards the origin

A lamp can work on 50V mains taking 2 amps. What value of resistance must be connected in series with it, so that it can be operated from 200V mains giving the same power?

Answers

The resistance of the lamp is apparently 50V/2A = 25 ohms.

When the circuit is fed with more than 50V, we want to add
another resistor in series with the 25-ohm lamp so that the
current through the combination will be 2A.

In order for 200V to cause 2A of current, the total resistance
must be 200V/2A = 100 ohms.

The lamp provides 25 ohms, so we want to add another 75 ohms
in series with the lamp. Then the total resistance of the circuit is
(75 + 25) = 100 ohms, and the current is 200V/100 ohms = 2 Amps.

The power delivered by the 200V mains is (200V) x (2A) = 400 watts.

The lamp dissipates ( I² · R ) = (2² · 25 ohms) = 100 watts.

The extra resistor dissipates ( I² · R) = (2² · 75 ohms) = 300 watts.

Together, they add up to the 400 watts delivered by the mains.

CAUTION:
300 watts is an awful lot of power for a resistor to dissipate !
Those little striped jobbies can't do it.
It has to be a special 'power resistor'.
300 watts is even an unusually big power resistor.
If this story actually happened, it would be cheaper, easier,
and safer to get three more of the same kind of lamp, and
connect THOSE in series for 100 ohms. Then at least the
power would all be going to provide some light, and not just
wasted to heat the room with a big moose resistor that's too
hot to touch.

What of the following frequencies falls in the range of RF waves used by commercial radio broadcasting stations

Answers

There are no broadcasting frequencies included on your list.
In fact, there are no frequencies at all on your list.
In fact, there's no list !
Where are the choices ? What does "the following" mean anyway ? ?

In the USA . . .

-- AM radio broadcasting operates between 550 KHz and 1.7 MHz.

-- FM broadcasting operates between 87.9 MHz and 108.1 MHz.

-- The numbers are slightly different in some other countries.

-- Regarding TV . . . don't ask. It can get really complicated.

The center of gravity is defined as: a. The part of the skeleton composed of the bones of the vertebral column, ribs, and skull b. A plane the passes through the midpoint of the body c. State of an object as a result of forces pushing on it d. Imaginary point through which the resultant force of gravity acts on an object

Answers

Answer:

the corect answer it b and c

Explanation:

b. the density of lines shows the strength of the force.

c. the arrows on the lines of force show which way a posative object will move.

youre welcome

The term used to describe the quantity of matter that a body possesses is

Answers

The body mass index.

The term used to describe the quantity of matter that a body possesses is mass.

Other Questions

If the plotted points on a speed-time graph do not form a straight line, what do you know about the object's acceleration?

A child sliding down the slide at a park is an example ofA. positive acceleration B. negative acceleration C. no acceleration D. velocity

What was the duration of the last and longest manned mission to Skylab?

paperclips are more dense than water. however, it's possible to make them float. what property of water allows this? how does this property relate to the molecular structure of water