PHYSICS MIDDLE SCHOOL

What does it mean to say that the forces acting on an object are balanced?

Answers

Answer 1

Answer:

Answer:

that would be for force and motion and it would be newtons laws and that would be like inertia

Explanation:

it would be the law of inertia: every action has a equal ad opposite reaction.

hope this helps :)

Answer 2

Answer:

Answer:

If these are your answer choices:

A. The sum of the horizontal forces is zero.

B. All the forces combine to give zero net force.

C. The forces occur as pairs of forces with equal magnitude and direction.

D. The forces all have the same magnitude.

The correct answer is B. All the forces combine to give zero net force.

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A boy pushes on a wagon so that it accelerates at a rate of 0.50 m/s2. The wagon has a mass of 24 kg. What is the magnitude of the boy's pushing force? (Ignore frictional effects.) 12 N 12 kg 48 N 48 kg

Answers

Answer:

12N

Explanation:

Force acting on any body is equal to mass of body multiplied by acceleration produced in the body.

Its formula is

F = M*a

where F is the force acting on body

M is the mass of the body

a is the acceleration produced in the body

Unit of force is Newton represented by N

1 N is force acting on body of mass 1 kg which produces acceleration of 1m/s^2.

_____________________________________

Given

a = 0.50 m/s^2

M = 24 kg

therefore

F = 24*0.5 = 12 N

Thus, magnitude of the boy's pushing force is 12 N.

Describe each of the three types of hazardous weather forecasts

Answers

Well, there can be a tornado that is very severe when hot and cold air mixes making air swirl and create a triangular shaped spinning air. There are lightning storms when lightning bolts come from the sky, and there are hurricanes when there are lots of rain coming towards your way due to change in climate such as global warming, it often occurs in humid places.

How can you cause a physical change?

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Take the sample and . . .
-- Cut a piece off.
-- Sand the surface smooth.
-- Melt it.
-- Paint it a different color.

Does a force cause motion or a change in motion

Answers

it changes the motion as Newton's second law of motion states that a force, acting on an object, will change its velocity by changing either its speed or its direction or both. If your basketball goes rolling into the street and is hit by a bike, either the ball will change direction or its speed or both.

1.    How does the friction affect forwardmotion? Give an example.
2.    Describe two ways to change the
frictional force between two solids surfaces.

Change the lubrication between the two surfaces

Change the normal force between the two surfaces

3.    How does air resistance affect the
velocity of a falling object?
4.    What two sources of friction do you
have to overcome when you are walking?
5.    If you push a chair across the floor
at a constant velocity, how does the force of friction compare with the force
exert? Explain.

6.    If you push a book against a wall
hard enough, it will not slide down even though gravity is pulling it. Use what
you know about Newton’s laws of motion to explain why the book doesn’t fall.

Answers

1. Friction affects forward motion by repelling or trying to cancel the force which the opposite of its direction. For example, the wheel against the road pavement.

3. Air resistance affect the velocity of a falling object by either interfering with the gravitation force the object is acting on the subject. Hence, these since air assuming that the direction is perpendicular with gravity will result the object to drop sideways or gradually.

4. The friction of the pavement and the air molecules.

5. Since the exerted force of the human is greater the object moves until the frictional force cancel itself or produce a net force both the force of the chair, gravity and friction.

6. Third law of motion which states that the force exerted of A to B, B will exert the same force that was exerted by A leaving the gravitational force canceled.

What is information that is encoded as a string of 1s and 0s?

Answers

Answer: a digital signal

Explanation:

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