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Alina [70]
2 years ago
7

Look at the triangle below.

Physics
1 answer:
slega [8]2 years ago
7 0

Answer:

a = 32.48538491

b = 25.59883264

Step-by-step explanation:

To find the length of a, use the sine function:

sin\alpha = \frac{opposite}{hypotenuse}

sin 38 = \frac{20}{a} \\a = \frac{20}{sin38}\\a = 32.48538491

To find the length of b, use tangent:

tan\alpha = \frac{opposite}{adjacent}

tan 38 = \frac{20}{b} \\b = \frac{20}{sin38}\\b = 25.59883264

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Answer:

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An 85.0-N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 28.0°
irina [24]

Answer:

A  75.1 N and a direction of 152° to the vertical.

B 85.0 N at 0° to the vertical.

Explanation:

A) The interaction partner of this normal force has what magnitude and direction?

The interaction partner of this normal force is the component of the weight of the crate perpendicular to the ramp. <u>It has a magnitude of 85cos28° = 75.1 N and a direction of 180° - 28° = 152° to the vertical(since it is directed downwards perpendicular to the ramp).</u>

B) The normal and frictional forces are perpendicular components of the contact force exerted on the crate by the ramp. What is the magnitude and direction of the contact force?

Since this force has to balance the weight of the crate, its magnitude is 85.0 N. Its direction has to be vertically opposite to that of the weight.

Since the weight is 180° to the vertical (since it is directed downwards), this force is 0° to the vertical.

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8 0
2 years ago
A man runs 800m due north in 110 seconds followed by 400m due suoth in 90 seconds calculate his average speed and his average ve
andrey2020 [161]

Answer:

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t is time

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Explanation:

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