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Ivahew [28]
3 years ago
9

The sun is 27 degree above the horizon. It makes a 60 m long shadow of a tall tree.

Physics
1 answer:
mestny [16]3 years ago
5 0

Answer:

 h = 30.57 m

Explanation:

given,

angle made with horizon, θ= 27°

Length of the shadow,L = 60 m

now,

the height of the tree would be equal to

tan \theta = \dfrac{height\ of tree}{shadow\ length}

tan 27^0 = \dfrac{h}{60}

 h = 60 x tan 27°

 h = 30.57 m

hence, height of the tree is equal to 30.57 m

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34kurt

Answer:

Kinematics is the study of motion.

6 0
2 years ago
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A car is pushed with a force of 450 N for 19.4 seconds. What impulse was applied to the car?​
harina [27]

Answer:

impulse = 8820 kg·\frac{m}{s} or 8820 N·s

Explanation:

Impulse J is equal to the average force F_{av} multiplied by the elapsed time Δt or in equation form, J = F_{av}Δt

As long as your force of 450 N is constant then that value is your average force F_{av} and your elapsed time is 19.4 seconds.

Multiply these values.

You will get an impulse of 8820 kg·\frac{m}{s} or 8820 N·s.

6 0
2 years ago
What type of material is wrapped around an object could cause the object to lose the most heat
Dmitrij [34]
<span>A sheet of copper could cause the object to lose the most amount of heat. Copper is an essential element and a good conductor of heat. Heat can transfer from one end of a piece of copper to the other end.</span>
7 0
2 years ago
Consider a block on a spring oscillating on a frictionless surface. The amplitude of the oscillation is 11 cm, and the speed of
IRISSAK [1]

Answer:

The angular frequency of the block is ω = 5.64 rad/s

Explanation:

The speed of the block v = rω where r = amplitude of the oscillation and ω = angular frequency of the oscillation.

Now ω = v/r since v = speed of the block = 62 cm/s and r = the amplitude of the oscillation = 11 cm.

The angular frequency of the oscillation ω is

ω = v/r

ω = 62 cm/s ÷ 11 cm

ω = 5.64 rad/s

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6 0
3 years ago
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Answer:

.7917 m/s

Explanation:

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3 0
3 years ago
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