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Ganezh [65]
2 years ago
5

Please tell me if if these statements are true or false

Physics
2 answers:
alex41 [277]2 years ago
6 0

Answer:

Im not sure if im right but this is what i got( i have no clue how to explain im sorry)

1. False

2. False

3. True

4. False

adelina 88 [10]2 years ago
6 0
1. False- light usually doesn’t cause changes to certain materials.

2. True (I think) I don’t really know how to explain this one

3. False- Not all light can be seen especially when light can travel

4. False- Certain hard materials light won’t be able to go through because of its density.

Sorry about the 2nd one and I’m not 100% on this but hope this helps.
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The triceps muscle in the back of the upper arm is primarily used to extend the forearm. Suppose this muscle in a professional b
Romashka-Z-Leto [24]

Answer:

I=0.0361 kg.m^2

Explanation:

Torque is the rotational equivalent of a force

Torque= perpendicular distance r X Force F

Torque T = I(moment of inertia) X α (angular acceleration)

T= Iα

r= 0.0285m

F= 1.9 x 10^3

T=0.0285 x 1.9 x 10^3

T= 54.15Nm

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4 0
3 years ago
Sheila uses a 45N force on her bowling ball across a 15m lane. What work did she do on the bowling ball? Show your work.​
Maurinko [17]

Answer:

675J

Explanation:

Given parameters:

Force  = 45N

Distance  = 15m

Unknown:

Work done by Sheila  = ?

Solution:

Work done by a body is the amount of force applied to make a body move through a distance;

         Work done  = Force x distance

 Now;

          Work done  = 45 x 15  = 675J

6 0
2 years ago
Consider two wind turbines, each located in sites with the same wind speed, and each with the same efficiency. Turbine 1 has a r
Alex787 [66]

Answer:

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Exption:

7 0
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