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gladu [14]
3 years ago
11

The energy associated with the motion of particles in a substance is called

Physics
1 answer:
Fynjy0 [20]3 years ago
8 0

Answer:

heat

Explanation:

Heat is what a living being feels at a high temperature. Physics understands heat as the energy that is transferred from one system to another or from one body to another, a transfer linked to <u>the movement of molecules, atoms and other particles</u>.

It is important to keep in mind that bodies do not have heat, but internal energy. When a part of this energy is transferred from one system or body to another that is at a different temperature, it speaks of heat. Heat transfer will occur until the two systems are at the same temperature and the so-called thermal equilibrium is reached.

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Starting from rest near the surface of the Earth, a 25-kg beam slides 12 m down a vertical pine tree, and has a speed of 6 m/s j
Mamont248 [21]

Answer:

The frictional force acting on the bear during the slide is 207.5 N

Explanation:

Given;

mass of beam, m = 25-kg

vertical height, h = 12 m

speed of fall, v =  6 m/s

Change in potential energy of the beam:

ΔP.E = -mgh = - 25 x 9.8 x 12 = -2940 J

Change in kinetic energy of the beam:

Δ K.E = ¹/₂mv² = ¹/₂ x 25 x (6)² = 450 J

Change in thermal energy of the system due to friction:

ΔE = - (ΔP.E  + Δ K.E)

ΔE = - (-2940 J + 450 J)

ΔE = 2940 J - 450 J = 2490 J

Frictional force (in N) acting on the bear during the slide:

F x d = Fk x h = ΔE

Where;

Fk is the frictional force

Fk = ΔE/h

Fk = 2490J / 12m

Fk = 207.5 N

Therefore, the frictional force acting on the bear during the slide is 207.5 N

3 0
3 years ago
Bob heads out into a lake at an angle of 40◦ with respect to the shore. If his boat is capable of a speed of 1.8 m/s, how far fr
Alona [7]

Below is an attachment containing the solution.

8 0
3 years ago
Which force takes place when a match is quickly striked against the top edge on the book of matches?
PIT_PIT [208]

Answer:

A friction

Explanation:

Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.

8 0
3 years ago
What is the minimum number of 100 Ohm resistors that you need to design an effective resistor with 275 Ohm resistance.
jekas [21]

Answer:

The minimum number of 100 Ω resistors that i need to design an effective resistor with 275Ω resistance are 8 resistors.

Explanation:

(2 Resistors of 100Ω in parallel) in <u>series with</u> (4 resistors of 100Ω in parallel) in <u>series</u> with 2 resistors of 100Ω.

2 resistors in parallel of 100Ω = 50Ω

+

4 resistors in parallel of 100Ω = 25Ω

+

2 resistors in series of 100 2Ω = 200Ω

=

275Ω

6 0
3 years ago
Fossil fuels, such as coal, are formed through deposition of BLANK rocks
mamaluj [8]
It would be sedimentary rocks
5 0
3 years ago
Read 2 more answers
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