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almond37 [142]
3 years ago
14

Special relativity can be used to study an object in which frame of reference? A. A frame of reference that has no change in vel

ocity B. A frame of reference that is moving in a circle C. A frame of reference that has a constant, positive acceleration D. A frame of reference that has a constant, negative acceleratio
Physics
2 answers:
4vir4ik [10]3 years ago
5 0

Answer:

Explanation:d

Georgia [21]3 years ago
4 0

Answer:

gangster

Explanation:

sorrynsjajshdnqmanshsha

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The solution to this ques is available in the image.

Given,

Force= 1N

Mass= 0.11kg

Time= 5sec

Force= mass X accelaration

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Blood cell : ____________ :: bacteria : _________________
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A light ray incident on a block of glass makes an incident angle of 50.0° with the normal to the surface. The refracted ray in t
Vladimir [108]

Answer:

The index of refraction of the glass is 1.3

Explanation:

Given data:

i = incident angle = 50°

r = refracted angle = 36.1°

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n=\frac{1*sini}{sinr} =\frac{1*sin50}{sin36.1} =1.3

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3 years ago
Kiera, a 330 N girl, steps in water that someone spilt on the floor. The coefficient of kinetic friction between Kiera and the f
shutvik [7]

Answer:

<em>The force of kinetic friction between Kiera and the floor is 9.24 N</em>

Explanation:

<u>Friction Force</u>

When an object is moving and encounters friction in rough surfaces, it loses acceleration and/or velocity because the friction force opposes motion.

The friction force when an object is moving on a horizontal surface is calculated by:

Fr=\mu N

Where μ is the coefficient of static or kinetics friction and N is the normal force.

If no forces other then the weight and the normal are acting upon the y-direction, then the weight and the normal are equal in magnitude:

N = W

Thus, the friction force is:

Fr=\mu W

Kiera, the W=330 N girl steps in water that has a coefficient of friction of μ=0.028 with the floor.

The kinetic friction force is:

Fr = 0.028*330

Fr = 9.24 N

The force of kinetic friction between Kiera and the floor is 9.24 N

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3 years ago
Mike rides his horse with a constant speed of 20 km/h. How far can he travel in 4 hours?
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Mike can travel 80 Km in 4 hours

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