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NikAS [45]
2 years ago
7

Blaine steps onto a ski slope with an angle of 25°. There is a coefficient of kinetic friction of 0.15 between him and the groun

d. He has a mass of 65 kg.
Draw the free-body diagram showing the forces acting on Blaine.

Physics
1 answer:
Ymorist [56]2 years ago
3 0

θ = angle of the incline surface from the horizontal surface = 25⁰

μ = Coefficient of friction = 0.15

m = mass of the person = 65 kg

f_{k} = kinetic frictional force acting on the person as he slides down

mg = weight of the person acting in down direction

F_{n} = normal force by the incline surface on the person

the free body diagram showing the forces acting on the person is given as


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Answer:C

Explanation:

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Power=0.28 kilowatts

Device use 0.28 kilowatts in 1 day

1day=24hours

Device use 0.28 kilowatts in 24hours

30days=30 x 24=720 hours

For 720 hours=(0.28x720) ➗ 24

For 720 hours=201.6 ➗ 24

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scoundrel [369]

Answer:

<u>Amplitude - remains the same</u>

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<u>Velocity - remains the same.</u>

<u />

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The amplitude of the wave remains the same since you are not changing the distance your hand moves and the amplitude of the wave depends on how much distance your hand covers while moving.

The frequency of your wave increases since now you are moving your hand more number of times in the same period i.e. your hand is moving faster in one second. So, the frequency of your wave increases.

The period is the time taken by the wave to travel a certain distance. Since your hand is now moving faster, the wave will travel faster and will take less time to cover the same distance hence, we can say that its period will decrease.

The velocity of a wave depends on the medium in which it is travelling. Your wave was previously travelling in air and the new wave is also travelling in the same medium so the velocity of the wave remains unchanged.

7 0
2 years ago
Using this information...
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19.2\:\text{m/s}

Explanation:

At the top of the tree, the velocity of the pebble is purely horizontal so we can calculate it as

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\:\:\:\:\:= 19.2\:\text{m/s}

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nydimaria [60]

Answer:

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Explanation:

Hope this helps!

3 0
3 years ago
Read 2 more answers
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