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3 years ago

A book is at rest on a table. Identify the correct free-body diagram for this situation.

Physics

2 answers:

Law Incorporation [45]3 years ago

5 0

Show a picture .. of what your doing

Helen [10]3 years ago

3 0

Answer:

the 3rd pic is correct

Explanation:

because the arrows are going away from each other.

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A toy car is given a quick push so that it moves up an inclined ramp. After it is released, it moves up, reaches its highest poi

Alexeev081 [22]

Answer:

7. Net constant force down the ramp

Explanation:

After the car is released and starts moving up the ramp, the only force that is applied on the car is weight because of the gravity, we were told that the friction force is neglected. the force because of the weight is given by:

$F=m*g*sin(\theta)$

where θ is the angle of the ramp.

as you can see those values won't change, so the force remains constant down the ramp.

4 0

3 years ago

If v lies in the first quadrant and makes an angle Ï/3 with the positive x-axis and |v| = 4, find v in component form.

Alexeev081 [22]

Answer:

$v=$

Explanation:

We are given that

Magnitude of vector v= $\mid v\mid =4$

v lies in the first quadrant

$\theta=\frac{\pi}{3}$

$v_x=\mid v\mid cos\theta$

$v_y=\mid v\mid sin\theta$

Substitute the values then we get

$v_x=4cos\frac{\pi}{3}$

$v_x=4\times \frac{1}{2}=2$

$cos\frac{\pi}{3}=\frac{1}{2}$

$v_y=4\times sin\frac{\pi}{3}=4\times \frac{\sqrt 3}{2}=2\sqrt 3$

$sin\frac{\pi}{3}=\frac{\sqrt 3}{2}$

Therefore, the vector v in component form $=$

$v=$

4 0

4 years ago

Tsunami waves are usually created by earthquakes that occur along ? _____ _____

sdas [7]

Answer:

The correct answer is the sea

7 0

3 years ago

1. What types of elements does an ionic bond occur between?

sweet [91]

Answer:

Ionic bonds form when a nonmetal and a metal exchange electrons, while covalent bonds form when electrons are shared between two nonmetals. An ionic bond is a type of chemical bond formed through an electrostatic attraction between two oppositely charged ions.

Explanation:

6 0

4 years ago

Glaciers store about 72% of the world's freshwater false are true

IRISSAK [1]

The answer to this question is True.

6 0

3 years ago