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3 years ago

In Science, what is a model?

Physics

2 answers:

abruzzese [7]3 years ago

8 0

I'm not sure about the "in nature" part but i think its A

Citrus2011 [14]3 years ago

8 0

Pretty sure it’s A

Hope this helps

-AaronWiseIsBae

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This diagram shows a stationary box sitting on the floor. Which statements about the other force exerted on the box are

Alex777 [14]

It's a normal force exerted by the floor. It balances the gravitational force. Option A is correct. The normal force is balanced by the gravitational force.

<h3>What is the friction force?</h3>

It is a type of opposition force acting on the surface of the body that tries to oppose the motion of the body. its unit is Newton (N). Mathematically it is defined as the product of the coefficient of friction and normal reaction.

On resolving the given force and accelertaion in the different components and balancing the equation gets components in the y-direction.

The normal force is balanced by the gravitational force. It's a normal force exerted by the floor. It balances the gravitational force.

Hence, option A is correct.

To learn more about the friction force refer to the link;

brainly.com/question/1714663

#SPJ1

5 0

1 year ago

zubka84 [21]

Answer:

Explanation:

Momentum= mass x speed (P=MV)

Momentum= 5x6=30

Momentum= 30kg m/s

7 0

2 years ago

A child pulls a block across the floor with force applied by a horizontally held string. A smaller frictional force also acts up

castortr0y [4]

Answer:

work done by tension force is more than the change in kinetic energy of the block

Explanation:

As we know that by work energy theorem we know that

Work done by all forces on the system must be equal to the change in kinetic energy of the system

so here when a block is pulled horizontally by applied tension force on the rope and there exist some frictional force on it

so we can say that net work done on the block must be equal to change in kinetic energy of the system

So we have

$W_f + W_T = \frac{1}{2}m(v_f^2 - v_i^2)$

$W_T - W_f = \Delta K$

so we have

$W_T = W_f + \Delta K$

So here we can see that since work done by frictional force is always negative so work done by tension force is sum of work done by frictional force and change in kinetic energy.

So work done by tension force is more than the change in kinetic energy of the block

7 0

3 years ago

Follow the path of the current leaving the battery and returning back to the battery through two light bulbs if they are a) conn

miskamm [114]

Well there's only one path for the current to travel through in a series circuit.
there are multiple paths in a parallel circuit.

7 0

3 years ago

Read 2 more answers

Find the current flowing out of the battery in the circuit. I = [?] A 9.0 V 30 ww 40 Ω www 50 Ω 20Ω 10Ω

frozen [14]

We need Net resistance