All categories

3 years ago

What is the main source of energy?

1 answer:

4 0

the end, all the energy that we use comes from two sources; the sun (fossil fuels, solar panels, hydro power, and wind energy), and its predecessor, some supernova that created the very heavy atoms (uranium, thorium) which are still around that provide us with geothermal heat and nuclear reactors

You might be interested in

A tennis ball is tossed upwards into the air with an initial velocity of +5m/s, how much time does it take for the tennis ball t

Sever21 [200]

HOPE THIS HELPS YOU!!!!!

3 0

2 years ago

A book 15.6 cm tall is 28.7 cm to the left of a plane mirror. What is the height of the image formed?

Ira Lisetskai [31]

Answer:

15.6cm

................

3 0

3 years ago

Sound wave A is moving through a medium that is decreasing temperature.

Alla [95]

Answer:

C, They will slow down.

Explanation:

Hope this helps :)

3 0

3 years ago

Read 2 more answers

How is amplitude changed in an instrument or tuning fork

azamat

Amplitude is affected by the energy wave in the instrument. High energy wave means high amplitude and low energy wave means low amplitude.

<u>Explanation:</u>

The amplitude of a periodic variable is a measure of its change over a single period. There are various definitions of amplitude, which are all functions of the magnitude of the differences between the variable's extreme values.

The amount of energy carried by a wave is related to the amplitude of the wave. Amplitude of an instrument is directly affected by the wave of the energy in the instruments. High energy wave means high amplitude and low energy wave means low amplitude in the instrument.

7 0

3 years ago

A ball of plasticine is released from rest at height of 2.2 m above the ground. After touching the ground, the plasticine ball c

Anna35 [415]

The magnitude of the acceleration of the ball while coming to rest is 477.43 m/s²

The direction of the acceleration of the ball is downwards

The given parameters

initial velocity of the ball, u = 0

height above the ground, h = 2.2 m

time of motion of the ball, t = 96 ms = 0.096 s

The magnitude of the acceleration of the ball while coming to rest is calculated as;

let the downwards direction of the acceleration be positive

$h = ut + 0.5 at^2\\\\h = 0 + 0.5at^2\\\\h = 0.5 at^2\\\\a = \frac{h}{0.5t^2} \\\\a = \frac{2.2}{0.5 \times 0.096^2} \\\\a = 477.43 \ m/s^2$

The direction of the acceleration of the ball is downwards

Learn more here: brainly.com/question/15407740

4 0

2 years ago