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3 years ago

0.40N

Physics

2 answers:

AnnZ [28]3 years ago

7 0

Answer:

um- yes

Explanation:

slega [8]3 years ago

4 0

Answer:

Explanation:

dwadad

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Select the choice that best completes the following sentence. Simple machines

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3 years ago

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The source of most of rhe energy we use today is

allsm [11]

Your answer should be A. Fossil Fuels. Hope this helps! =^-^= (Brainliest would be appreciated!)

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You are 2.4 from a plane mirror, and you would like to take a picture of yourself in the mirror. You need to manually adjust the

Wittaler [7]

Answer:

option (D)

Explanation:

your distance from the plane mirror = 2.4 m

According to the property of the plane mirror, the distance between the object and the mirror is equal to the distance between the image and the mirror.

So, the distance between you and your image is two times the distance between you and mirror.

the distance between you and your image = 2 x 2.4 = 4.8 m

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3 years ago

In a downhill ski race, surprisingly, little advantage is gained by getting a running start. (This is because the initial kineti

Sergio [31]

Answer:

Part a)

$v_f = 25.2 m/s$

$t = 5.48 s$

Part b)

$v_f = 25.32 m/s$

$t = 4.96 s$

Explanation:

Part a)

When ski start from rest

$v_f^2 - v_i^2 = 2 a d$

on this inclined plane we know that the acceleration is given as

$a = g sin\theta$

$a = 9.81 sin28$

$a = 4.6 m/s^2$

now for final speed

$v_f^2 - v_i^2 = 2 a d$

$v_f^2 - 0 = 2(4.6)(69)$

$v_f = 25.2 m/s$

now time taken by the ski to reach the bottom is given as

$v_f = v_i + at$

$25.2 = 0 + 4.6 t$

$t = 5.48 s$

Part b)

Now when ski start with initial speed of 2.5 m/s

then we will have

$v_f^2 - v_i^2 = 2 a d$

$v_f^2 - 2.5^2 = 2(4.6)(69)$

$v_f = 25.32 m/s$

now time taken by the ski to reach the bottom is given as

$v_f = v_i + at$

$25.32 = 2.5 + 4.6 t$

$t = 4.96 s$

3 0

3 years ago

At the instant shown in the diagram, the car's centripetal acceleration is directed

serg [7]

Answer:

At the instant shown in the diagram, the car's centripetal acceleration is directed is discussed below in detail.

Explanation:

The direction of the centripetal acceleration is in a circular movement is forever towards the middle of the roundabout pathway. In the picture displayed, the East direction is approaching the center. So, the course of the car's centripetal acceleration is (H) toward the east.

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3 years ago