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3 years ago

Two dump trucks each have a mass of 1,500 kg. The distance of the dump truck

Physics

1 answer:

xxTIMURxx [149]3 years ago

4 0

Answer:

6.00 x 10⁻⁸N

Explanation:

Given parameters:

Mass of each dump trucks = 1500kg

Distance between them = 50m

Unknown:

New gravitational force between them = ?

Solution:

From Newton's law of universal gravitation,

F = $\frac{G m1 m2}{r^{2} }$

F is the gravitational force

G is the universal gravitation constant

m is the mass

r is the distance

F = $\frac{6.67 x 10^{-11} x 1500 x 1500}{50^{2} }$ = 6.00 x 10⁻⁸N

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so correct answer would be

<em>C)At the maximum height, the velocity and acceleration vectors are perpendicular to each other. </em>

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3 years ago

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DochEvi [55]

Answer:

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3 years ago

A rock is launched at angle theta=53.2∘ above the horizontal from an altitude of ℎ=182 km with an initial speed ????0=1.61 km/s.

Mariulka [41]

Answer:

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Explanation:

Let's start by finding the initial vertical speed.

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Vertical Speed = 0.8 m/s

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We can use this in the following equation:

$s=u*t+\frac{1}{2} (a*t^2)$

$-91=0.8*t+\frac{1}{2} (-9.8*t^2)$

t = 4.3918 seconds

Thus it takes 4.3918 seconds to reach the required altitude. We can now find the speed as follows:

$V=U+at$

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$V = -42.24$

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4 years ago

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prisoha [69]

Answer:

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3 years ago

Any fracture or system of fractures along which Earth moves is known as a

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Any fracture or system of fractures along which Earth moves is known as a fault.

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