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3 years ago

What force is represented by the vector? O friction gravity normal force push

Physics

2 answers:

svetlana [45]3 years ago

7 0

Gravity, because the ball is falling down and the cause of body's to be pulled to the ground is gravity

neonofarm [45]3 years ago

6 0

Answer: the answer is gravity

Explanation: gravity allows objects to fall down so thats why when you drop something it falls if their was no gravity we would not be on the ground. hope this helped

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Does wax paper, aluminum foil, or plastic wrap cause more friction

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If a quasar is moving away from us at v/c = 0.8, what is the measured redshift?

Delicious77 [7]

Answer:

The measured redshift is z =2

Explanation:

Since the object is traveling near light speed, since v/c = 0.8, then we have to use a redshift formula for relativistic speeds.

$z= \sqrt{\cfrac{c+v}{c-v}}-1$

Finding the redshift.

We can prepare the formula by dividing by lightspeed inside the square root to both numerator and denominator to get

$z= \sqrt{\cfrac{1+\cfrac vc}{1-\cfrac vc}}-1$

Replacing the given information

$z= \sqrt{\cfrac{1+0.8}{1-0.8}}-1$

$z= \sqrt{\cfrac{1.8}{0.2}}-1\\z= \sqrt{9}}-1\\z=3-1\\z=2$

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3 years ago

An object with a mass of 10 kg is accelerated upward at 2 m/sec2. What force is required?

telo118 [61]

Answer:

Answer: Given m = 10 kg and . F = 20 N. Thus, the force required to accelerate the object upward direction is 20 N.

Explanation:

Answer: Given m = 10 kg and . F = 20 N. Thus, the force required to accelerate the object upward direction is 20 N.

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3 years ago

The speed of a sound wave traveling through air is 400 meters per second. The wavelength of the wave is 25 meters What is the

sweet [91]

Answer:

16Hz

Explanation:

Given parameters:

Speed of sound = 400m/s

Wavelength = 25m

Unknown:

Frequency of the wave = ?

Solution:

To solve this problem;

V = F ∧

V is the velocity

F is the frequency

∧ is the wavelength

400 = F x 25

F = 16Hz

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What force is represented by the vector? O friction gravity normal force push​

What force is represented by the vector? O friction gravity normal force push