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mixas84 [53]
2 years ago
15

Please help I'm taking a timed test!

Physics
2 answers:
SCORPION-xisa [38]2 years ago
8 0
B. A small rubber ball bouncing near a little girl
xenn [34]2 years ago
8 0

Answer:

B  ......a small rubber ball bouncing near a little girl

Explanation:

All the other answers  arent a type of energy change they aint moving sooo where is the energy  change ...... Nowhere .

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What is the centripetal acceleration of a small laboratory centrifuge in which the tip of the test tube is moving at 19.0 meters
Volgvan
A_central = v^2/r = (19)^2/10 = 36.1 m/s^2
7 0
3 years ago
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A sled that has a mass of 8 kg is pulled at a 50 degree angle with a force of 20 N. The force of friction acting on the sled is
vitfil [10]

The acceleration of the sled will be 1.30 m/s². Force is defined as the product of mass and acceleration.

<h3>What is force?</h3>

Force is defined as the push or pulls applied to the body. Sometimes it is used to change the shape, size, and direction of the body.

Given data;

m(mass of sled)=8 kg

Θ is the inclination of force= 50°

Force of friction,f=2.4 N.

The applied force at the given angle is resolved into the two-component as;

\rm F_h=F cos \theta \\\\ F_h= 20 cos 50 ^0 \\\\ F_h= 12.85 \ N

\rm F_v=F sin \theta \\\\  F_v=20 sin 50^0 \\\\   F_v=15.32 \ N

The net vertical force is zero;

\rm F_N=mg-Fsin50^0 \\\\ \rm F_N=8 \times 9.81 -15.32 \\\\ F_N=63.1 \ N \\\\

From Newton's second law the net force as;

\rm \sum F_{net}=ma \\\\ Fcos 60^0-f =ma \\\\ a=\frac{12.855-2.4}{8} \\\\a = 1.30 \ m/s^2

Hence, the acceleration of the sled will be 1.30 m/s².

To learn more about the force refer to the link;

brainly.com/question/26115859

#SPJ1

5 0
1 year ago
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Can the force of gravity cause any deformation to an object?
PSYCHO15rus [73]

Answer:

yes it could deform a shape or an object

Explanation:

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3 years ago
What is net force?
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The answer is d my friend :)
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2 years ago
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Define the term electrical resistance as applied to current electricity
svp [43]

Explanation:

Electrical resistance can be defined as the opposition to the flow of current in an electric circuit or wire. The resistance converts electrical energy into thermal energy, this serves as friction in mechanical systems. And this electrical energy converted to thermal is dissipated.

By ohm's law we have

Resistance R = Voltage V/ Current I

8 0
3 years ago
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