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2 years ago

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A high school physics student with a mass of 68.18 KG is sitting in a seat reading this question the magnitude of the force with

which the seat is pushing up upon the student is
A) 6.96 N

B) 66.82 N

C) 668.16 N

D) 1200 N

1 answer:

love history [14]2 years ago

3 0

The answer to the question is C

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Review 1: A plane is located x = 40 miles (horizontally) away from an airport at an altitude of h miles. Radar at the airport de

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Explanation:

Let h is the height of the plane above ground. x is the horizontal distance between the ground and the airport. Let s(t) is the distance between the plane and the airport. So,

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Given, h = 4, x = 40 and s(t) = -20 mph

Differentiate equation (1) wrt t

$2s(t)s'(t)=2x(t)x'(t)$

$x'(t)=\dfrac{s(t)s'(t)}{x(t)}$

When x = 40, $s(t)=\sqrt{40^2+4^2}=40.19\ m$

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3 years ago

A police car is located 50 feet to the side of a straight road. A red car is driving along the road in the direction of the poli

NNADVOKAT [17]

Answer:74.33 feet per sec

Explanation:

Given

Police car is 50 feet side of road

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as the red car is moving

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$\frac{\mathrm{d} x}{\mathrm{d} t}$

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$x\frac{\mathrm{d} x}{\mathrm{d} t}=z\frac{\mathrm{d} z}{\mathrm{d} t}$

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3 years ago

What is the frequency of this wave?

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3 years ago

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A 2kg water balloon is flying at a rate of 4m/s^2. With what force will it hit its target?

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Explanation:

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3 years ago

A certain white dwarf star was once an average star like our Sun. But now it is in the last stage of its evolution and is the si

solmaris [256]

Answer:

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2 years ago