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Pavlova-9 [17]
4 years ago
5

define heat, sound, light and potential energy. please can I get a short definition for each energy and I need the answer now pl

ease. by the way, the subject I want to choose was Science but there isn't any option science so I chose Physics.
Physics
1 answer:
inysia [295]4 years ago
4 0
Heat is an energy that is produced from something like the sun. Sound energy is when an object works to make sound. Light is when something gives off light by working. And potential energy is when an object is completely still but can be moved by another force
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A tire swing hanging from a branch reaches nearly to the ground. How could you estimate the height of the branch using only a st
blagie [28]

Answer:

A stop watch measures time and the number of seconds making an osculation is the period T

Which is T = 2π√(L/g)........solving for L (the length of the pendulum),

Then the L = T²x g/( 4πr²) substitute and then u find length or height of the swing

4 0
4 years ago
What frequency is received by a stationary mouse just before being dispatched by a hawk flying at it at 24.7 m/s and emitting a
Montano1993 [528]

Answer:

   f' = 3665.51 Hz

Explanation:

given,

speed of the hawk = 24.7 m/s

frequency of screech emitted by the hawk = 3400 Hz

speed of sound = 331 m/s

By Doppler's effect

f' = (\dfrac{v}{v-v_s}})f

f' is the frequency received by the mouse

v is the speed of the sound

v_s is the speed of the hawk

now,

f' = \dfrac{341}{341-24.7}}\times 3400

   f' = 1.078 x 3400

   f' = 3665.51 Hz

The frequency received by the stationary mouse is equal to 3665.51 Hz

6 0
3 years ago
HELP ASAP!! DUE TOMORROW!! FAN & MEDAL!! PLEASE I DON'T UNDERSTAND THIS!! I CAN'T AFFORD TO GET AN F!! ANYTHING WOULD HELP M
USPshnik [31]
If the resulting compound feels hot, then it is exothermic. Otherwise, it is endothermic.

Catalysts and inhibitors both affect the reaction rate of a chemical reaction. A catalyst speeds up the rate of reaction, while an inhibitor does the opposite (slows down the reaction rate).
4 0
3 years ago
A scuba diver wears weights as well as a buoyancy compensator to establish neutral buoyancy while diving. The buoyancy compensat
katrin [286]

Answer:

With more air is more buoyancy. When deflated or released the scuba diver is less buoyant.

Explanation:

The compensator is a Buoyancy control device that has an inflatable air bladder.When we have more air out into the inflatable bladder, then one is more buoyant. If the air is released from the bladder, then one is less buoyant. We add air through an air inflation valve. Air is also then released using air-deflation valves.

Buoyancy can be defined as an upward force which is exerted on an object that is fully or partially immersed in water

when one is less buoyant than water, it means that the upward pressure is more than the downward pressure of that person and his equipment. Then he will float. In a case of negative buoyancy, we have downward pressure of this person and his equipment to be more than the upward pressure of the water. Then sinking will happen.

4 0
3 years ago
What is the net force (magnitude and direction) of the system below?
Crank

The net force (magnitude and direction) of the system given in the question is 40 N horizontal to the right

<h3>How to determine the net force</h3>

Case 1 (Net force between up and downward force)

  • Force up (Fu) = 50 N
  • Force down (Fd) = 30 N
  • Net force 1 (F1) = ?

F1 = Fu - Fd

F1 = 50 - 30

F1 = 20 N up

Case 2 (Net force between right and left)

  • Force right (Fr) = 60 N
  • Force left (Fl) = 20 N
  • Net force 2 (F2) = ?

F2 = Fr - Fl

F2 = 60 - 20

F2 = 40 N right

SUMMARY

  • Net force between up and down = 20 N up
  • Net force between right and left = 40 N right

From the above, the net force between right and left (i.e 40 N) is greater than the net force between up and down (i.e 20 N)

Thus, the net force of the system will be 40 N horizontal to the right

Learn more about force:

brainly.com/question/14361879

#SPJ1

4 0
2 years ago
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