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spayn [35]
3 years ago
12

ASAP pls answer right and I will mark brainiest

Physics
1 answer:
frozen [14]3 years ago
6 0

Answer: question one: i cannot tell      Question 2: waxing crescent        Question 3:  waxing gibbous     Question 4:    B

Explanation

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A rope attached to a truck pulls a 180−kg motorcycle at 9.0m/s.The rope exerts a 400−N force on the motorcycle at an angle of 15
steposvetlana [31]

Answer:

115911.09915 J

Unchanged

Decreased

Explanation:

m = Mass of motorcycle = 180 kg

v = Velocity of motorcycle = 9 m/s

F = Force = 400 N

s = Displacement = 300 m

\theta = Angle above the horizontal = 15°

Work done is given by

W=Fscos\theta\\\Rightarrow W=400\times 300\times cos15\\\Rightarrow W=115911.09915\ J

The work done is 115911.09915 J

It can be seen that the force applied is constant so it does not matter if the speed of the motorcycle changes.

Tension on the rope would be

Fcos\theta-T=ma\\\Rightarrow T=Fcos\theta-ma

Work done

W=Ts\\\Rightarrow W=(Fcos\theta-ma)s

So, the work done would be reduced.

7 0
3 years ago
The Mass of a Body
9966 [12]

Answer:

Acceleration does not affect mass. Acceleration only affects weight.

Explanation:

Your mass is the same on Earth compared to on the moon, but your weight is going to be different because the acceleration due to gravity is going to be different.

7 0
3 years ago
1. Los experimentos se llevan a cabo para
mezya [45]

Answer:

Está incompleto, falta más

3 0
3 years ago
Two physics students, Ben and Bonnie, are in the weightlifting room. Bonnie lifts the 50 kg barbell over her head (approximately
KatRina [158]

Answer:

Both of them

Explanation:

5 0
3 years ago
Sarah and Devon are involved in an egg catching contest. They stand a fixed distance apart and toss a raw egg back and forth to
Georgia [21]

Answer:

The correct answer is - B. Increase the time it takes to stop the egg once it hits his hand.

Explanation:

In order to catch the egg the force and time makes an impulse to the egg to change its momentum and bring it to rest. In order to change the momentum, one needs to decrease the force exerted onto the egg and increase the time it takes to make it rest.

Less force can be given to the egg by increasing the time to bring it to rest stop the egg once it hits his hand. Other than this it should be caught to the sides.

6 0
3 years ago
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