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insens350 [35]
3 years ago
9

Forces between objects act when the objects are in direct contact or when they are not touching. Can you think of any forces tha

t can act at a distance?
Physics
2 answers:
Tju [1.3M]3 years ago
7 0

Answer:

gravity

Explanation:

Gravity as well as electrostatic and magnetic attraction and repulsion provide real life examples of forces being exerted by one object on another without them being in contact with each other. Many children are aware of magnetism and have played with fridge magnets.

ss7ja [257]3 years ago
4 0

Answer:

Magnetic, electric, and gravitational forces can be exerted, even though the objects involved do not touch each other.

Explanation:

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8. Object A has a momentum of 80 Ns and collides and sticks to object B which has a momentum of -30 Ns. What is the momentum of
BigorU [14]

Given,

The momentum of the object A before the collision, p₁ =80 Ns

The momentum of the object B before the collision, p₂=-30 Ns

Given that the objects stick together after the collision.

From the law of conservation of momentum, the total momentum of a system should always remain the same. Thus the total momentum of the objects before the collision must be equal to the total momentum of the objects after the collision.

Thus,

p_1+p_2=p

Where p is the total momentum of the system at any instant of time.

On substituting the known values,

\begin{gathered} p=80-30 \\ =50\text{ Ns} \end{gathered}

Therefore the total momentum of the system is 50 Ns

Thus the momentum of the object AB after the collision is 50 Ns

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1 year ago
How is thermal energy transferred during conduction?
Irina-Kira [14]

Answer:

Conduction occurs when a substance is heated, particles will gain more energy, and vibrate more. These molecules then bump into nearby particles and transfer some of their energy to them. This then continues and passes the energy from the hot end down to the colder end of the substance.

Explanation:

May I have brainliest please? :)

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3 years ago
Plz help The momentum of a baseball changes dramatically when struck by a bat.Momentum of the ball is not conserved. The best ex
Luda [366]

Answer:

When the bat hits the ball, it exerts some force on the ball. Just think about a home run hitter hitting a stationary ball. How far do you think it will go? Will it go more than 400 ft.? Probably not. While the kinetic energy transferred from the bat to the ball accounts for some energy of the ball, it does not account for all. Where is the mysterious energy coming from?

The answer is conservation of momentum. I just said momentum is conserved but how do I know that? I know that because of Newton's 2nd law: F=ma (Force equals mass times acceleration)

Conservation of momentum means that the harder you throw you, the harder the ball will bounce back at you. That is the reason it is easier to hit a home run on a fast ball than a curveball.

Conservation of momentum also means that the bat can transfer some of its momentum to the ball. This is why it is better to use a heavier bat if you swing just as fast. The momentum is the product of the mass and velocity, so to make it easier to understand;

a heavier bat swung at the same speed as a lighter bat will have more momentum.

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3 years ago
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They eat rice, chicken, beef, cereal they eat what we eat in a daily basis I guess
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2 years ago
Which type of mirror causes light to spread out?
saw5 [17]
A convex mirror makes a reflected light rays spread out.
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3 years ago
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