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3 years ago

Two airplanes leave an airport at the same

Physics

1 answer:

PSYCHO15rus [73]3 years ago

7 0

Answer:

1753.67 m

Explanation:

Using the law of cosine

$c=\sqrt {(a^{2}+ b^{2}-2abcos\theta_{c})}$

After 2.9 hours, the first plane has moved 730*2.9=2117 m, let this be a

The second plane has moved 550*2.9=1595 m, let this be b

The angle between them is 111-56.8=54.2, let this be $\theta_{c}$

$c=\sqrt {(2117^{2}+ 1595^{2}-2abcos 54.2)}$

c=1753.67 m

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A car has a distance between axles of 6.2 m and a center of mass located 2.2 m from the front axle. What is the

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Answer:

The correct option is C

Explanation:

From the question we are told that

The distance between axles of the car is $d_a = 6.2$

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Now we can evaluate the distance of the center of mass to the rear axle as follows

$k = d_a - D$

substituting values

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assuming the car is at equilibrium, taking moment about the center of mass

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=> $W_{front \ axle} * D = W_{rear \ axle} * k$

=> $\frac{W_{front \ axle}}{W_{rear \ axle} } = \frac{k}{D}$

substituting values

$\frac{W_{front \ axle}}{W_{rear \ axle} } = \frac{4}{2.2}$

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3 years ago

A girl police light on level ground with a force of 45 N at a 30° angle above the horizontal the girl pulls a sled 7.3 m how muc

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3 years ago

A 0.017-kg acorn falls from a position in an oak tree that is 18.5 meters above the ground.

Genrish500 [490]

Answer:

Velocity= 19.05 m/s

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Potential energy, PE= kinetic energy, KE

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Equating

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To get the kinetic eneegy, since PE=KE AND KE is

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3 years ago