All categories

3 years ago

You hold your physics textbook in your hand. (Assume that no other objects are in contact with the book.)

Physics

1 answer:

horrorfan [7]3 years ago

5 0

Answer:

Hand on book

Earth on book

Explanation:

Since we are holding the book so the forces that acts on the book is

1. Hand on book

this is the contact force between hand and the book

2. Earth on book

here this is the gravitational attraction force of earth on the book

Answer:

A. book on hand - NA

B. hand on book - upwards

C. floor on book - NA

D. earth on book - downwards

Explanation:

Since book is holding in hand so at equilibrium position we can say that the forces on the book must be in equilibrium

so first of all the force of attraction due to earth on the book is downwards and this is counterbalanced by the force of hand on book which is upwards.

Answer:

A. book on hand

Explanation:

As per Newton's III law we know that every action has equal and opposite reaction.

so if our hand apply the force on the book in upward direction then book will apply same magnitude force on the hand in downward direction.

You might be interested in

During an eclipse the sun the earth and the moon act as a light source,an obstacle or screen=

Zigmanuir [339]

Answer:

Un eclipse solar se produce cuando la luna se interpone en el camino de la luz del sol y proyecta su sombra en la Tierra. Eso significa que durante el día, la luna se mueve por delante del sol y se pone oscuro. ... Este eclipse total se produce aproximadamente cada año y medio en algún lugar de la Tierra.

Explanation:

espero que te

haya

servido

6 0

3 years ago

If wave ripples move across a pond from left to right, in which direction are the water molecules moving?

____ [38]

My inference is that the water molecules are moving up and down. I don't know for sure but i'm usually correct.

4 0

3 years ago

Read 2 more answers

The roller coaster car has a mass of 700 kg, including its passenger. If it is released from rest at the top of the hill A, dete

sweet [91]

Answer:

$h = 18.75 m$

Now when it will reach at point B then its normal force is just equal to ZERO

$N_B = 0$

$F_n = 1.72 \times 10^4$

Explanation:

Since we need to cross both the loops so least speed at the bottom must be

$v = \sqrt{5 R g}$

also by energy conservation this is gained by initial potential energy

$mgh = \frac{1}{2}mv^2$

$v = \sqrt{2gh}$

so we will have

$\sqrt{2gh} = \sqrt{5Rg}$

now we have

$h = \frac{5R}{2}$

here we have

R = 7.5 m

so we have

$h = \frac{5(7.5)}{2}$

$h = 18.75 m$

Now when it will reach at point B then its normal force is just equal to ZERO

$N_B = 0$

now when it reach point C then the speed will be

$mgh - mg(2R_c) = \frac{1}{2]mv_c^2$

$v_c^2 = 2g(h - 2R_c)$

$v_c = 13.1 m/s$

now normal force at point C is given as

$F_n = \frac{mv_c^2}{R_c} - mg$

$F_n = \frac{700\times 13.1^2}{5} - (700 \times 9.8)$

$F_n = 1.72 \times 10^4$

7 0

4 years ago

8. If horizontal velocity is 5 m/s, and vertical velocity is 8 m/s, what is the

zhenek [66]

Answer:

9.4

Explanation:

magnitude is the sum of the squares.

$\sqrt{5^2+8^2} =9.4339\\$

If you are given horizontal and vertical components, treat those as the rise and run of a triangle, the rise of 8 with a run of 5 and you want to find the hypotenuse.

How do you find the long side of a triangle?

7 0

4 years ago

The force that accelerates a rocket in outer space is exerted on the rocket by the?

Nana76 [90]

Gases at pressure are released by rockets as they travel towards space. According to Newton's third law, the combustion chamber's exhaust gases push the rocket with an accelerating force known as the thrust.

<h3>Explain exactly Newton's Third Law:</h3>

According to Newton's third law, if an object A pulls on an object B, then object B must exert an equal-sized and opposite-direction force on the first thing directed in the opposite direction. This law illustrates a symmetry in nature whereby forces always occur in pairs and whereby no body can exert a force without also being subjected to one.

<h3>What are Newton's 3rd law examples?</h3>

Action and response are always equal but always move in the opposite direction, according to Newton's third law of motion. A human walking on the ground, a hammer driving a nail, a magnet attracting a paper clip, and a horse pulling a cart are all examples of Newton's third rule of motion.

To know more about Newton Third Law visit:

brainly.com/question/23772134

#SPJ4

3 0

2 years ago