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Anna11 [10]
3 years ago
14

What is required for force to come into the play​

Physics
1 answer:
cricket20 [7]3 years ago
8 0

Answer:

At least two objects must interact for a force to come into play.An interaction of one object with another object results in a force between the two objects and no physical contact is necessary.

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Ian and Dane are twins. Ian loves art and music and work after school. Dane loves sports and would do anything to avoid having a
Brilliant_brown [7]

Answer:

Explanation:

Pliability

5 0
3 years ago
How many significant figures are in 246.32
muminat

Answer:5

Explanation:

Decimal :2

Significant notation :2.4632× 10^2

8 0
4 years ago
A Carnot heat engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a lar
kakasveta [241]

Answer:

W=4037.36\ J

Explanation:

Given:

mass of ice melted, m=3.3\times10^{-2}\ kg

time taken by the ice to melt, t=5\ min=300\ s

latent heat of the ice, L=3.34\times 10^5\ J

Now the heat rejected by the Carnot engine:

Q_R=m.L

Q_R=0.033\times 3.34\times 10^5

Q_R=11022\ J

Since we have boiling water as hot reservoir so:

T_H=373\ K

The cold reservoir is ice, so:

T_L=273\ K

Now the efficiency:

\eta=1-\frac{T_L}{T_H}

\eta=1-\frac{273}{373}

\eta=26.81\%

Now form the law of energy conservation:

Heat supplied:

Q_S-W=Q_R

where:

Q_S= heat supplied to the engine

Q_S-\eta\times Q_S=Q_R

Q_S(1-\eta)=Q_R

Q_S=\frac{11022}{1-0.2681}

Q_S=15059.36\ J

Now the work done:

W=Q_S-Q_R

W=15059.36-11022

W=4037.36\ J

8 0
3 years ago
Pads are used in athletic activities to __________.
Anit [1.1K]
Absorb kinetic energy and soften potentially damaging blows.
7 0
4 years ago
Which of the following statements about the nature of electrical charge is FALSE? Positive-positive or negative-negative charges
Ilya [14]

Answer:

All of the above statements are true.

Explanation:

All matter is composed of atoms of which have subatomic particles. Subatomic particles are electrons, protons and neutrons. Each particle has electric charges.

Electrons have a negative charge, protons have a positive charge and neutrons have zero charge.

Between two nearby charges initially at rest, a type of forces, called electrostatic, is always established in such a way that, if the charged particles are small enough so that they can be considered punctual, the following conditions are met:

  • The force established between the two has a direction that coincides with an imaginary straight line that joins the two charges.
  • The force exerted on one load points towards the other when the two have different signs, one positive and the other negative. (attractive force).
  • The sense of force is directed to the opposite side of the charge when both have the same sign (repulsive force).
4 0
4 years ago
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