How to draw the ray diagram? Pls answer

Physics

1 answer:

weqwewe [10]4 years ago

7 0

1. Pick a point on the top of the object and draw two incident rays traveling towards the mirror. Using a straight edge, accurately draw one ray so that it passes exactly through the focal point on the way to the mirror. Draw the second ray such that it travels exactly parallel to the principal axis.

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What is t = 0 s and t = 8 s?

Deffense [45]

Answer:

t=0 is t

t=8= 8t

Explanation:

because 0 is means "nothing" so that's why t=0 is t

7 0

3 years ago

A 1.75 kg box is pushed with a 8.35 N force across ground where k = 0.267. What is the net force on the box?

lubasha [3.4K]

The net force acting on the box of mass 1.75kg when it is pushed across a ground with coefficient of friction k=0.267 with a force of 8.35N, is 3.77N.

To find the answer, we have to know more about the basic forces acting on a body.

<h3>How to find the net force on the box?</h3>

Let us draw the free body diagram of the given box with the data's given in the question.
From the diagram, we get,

$N=mg\\F_t=ma\\F_t=F-f$

where, N is the normal reaction, mg is the weight of the box, $F_t$ is the net force, f is the kinetic friction.

We have the expression for kinetic friction as,

$f=kN=kmg=0.267*1.75*9.8= 4.58N$

Thus, the net force will be,

$F_t= 8.35-4.58=3.77N$

Thus, we can conclude that, the net force acting on the box of mass 1.75kg when it is pushed across a ground with coefficient of friction k=0.267 with a force of 8.35N, is 3.77N.

Learn more about the basic forces on a body here:

brainly.com/question/28061293

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