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denis-greek [22]
3 years ago
15

The force of friction occurs primarily because:

Physics
1 answer:
solniwko [45]3 years ago
3 0

Answer:

B

Explanation:

Friction is a force that opposes motion between any surfaces that are touching. Friction occurs because no surface is perfectly smooth Friction produces heat because it causes the molecules on rubbing surfaces to move faster and have more energy.

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Which of the following lists are all renewable resources?
earnstyle [38]

The answer is A.

Hydroelectric, which is usually generating electricity through use of a dam.

Solar, energy from the Sun.

Biomass, organic material formed from plant matter.

3 0
3 years ago
An object is placed 96.5 cm from a glass lens (n = 1.51) with one concave surface of radius 24 cm and one convex surface of radi
poizon [28]

Answer:

image is vertical at distance -203.62 cm

magnification is 2.110

Explanation:

given data

n = 1.51

distance u = 96.5 cm

concave radius r1 = 24 cm

convex radius r2 = 19.1 cm

to find out

final image distance and magnification

solution

we will apply here lens formula to find focal length f

1/f = n-1 ( 1/r1 - 1/r2)   .......................1

put here all value

1/f = 1.51 -1 ( -1/24 + 1/19.1)

f = 183.43

so from lens formula

1/f = 1/v + 1/u     .............................2

put here all value and find v

1/183.43 = 1/v + 1/96.5

so

v = −203.62 cm

so here image is vertical at distance -203.62 cm

and

magnification are = -v /u

magnification =  203.62 / 96.5

magnification is 2.110

3 0
4 years ago
A student is observing an object of unknown mass that is oscillating horizontally at the end of an ideal spring. The student mea
Phoenix [80]

Answer:

Decrease in the object's maximum kinetic energy is caused by loss of energy by the system to its immediate surroundings.

Explanation:

None of the options are correct because for an object spring system, maximum kinetic energy is reduced when the system loses energy to the immediate surrounding.

Thus, decrease in the object's maximum kinetic energy is caused by loss of energy by the system to its immediate surroundings.

7 0
3 years ago
3. A difference between copper and plastic is that copper has a much higher
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Answer:

d ............................

6 0
3 years ago
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What do any two samples of the element mercury (Hg) have in common?
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A shiny surface,atomic number 80 and its <span>symbol  is </span>Hg<span> </span>
5 0
3 years ago
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