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Dovator [93]
3 years ago
8

While Steve is trekking in the Rocky Mountains, he realizes that he does not have a compass. He decides to find north direction

at twelve noon. Which of these methods should he try?
A) locate the position of the Pole Star in the sky
B) face the Sun directly and observe the direction of his shadow
C) blow upon some dry grass to determine the direction of the wind
D) pour some water on the ground and observe the direction of its flow
Physics
1 answer:
wolverine [178]3 years ago
8 0

Answer:

B

Explanation:

The Sun's shine comes from right above the Equator. The Equator is south from the Rocky Mountains, so the sunshine comes from south and the shade (the opposite direction of the sun) is north.

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A ladder rests against a vertical wall at a point 12 feet from the floor. The angle formed by the ladder and the floor is 63°. C
GenaCL600 [577]

Answer:

length of the ladder is 13.47 feet

base of wall to latter distance 6.10 feet

angle between ladder and the wall is 26.95°

Explanation:

given data

height h  = 12 feet

angle 63°

to find out

length of the ladder ( L) and length of wall to ladder ( A) and angle between  ladder and the wall

solution

we consider here angle between base of wall and floor is right angle

we apply here trigonometry rule that is

sin63 = h/L

put here value

L = 12 / sin63

L = 13.47

so length of the ladder is 13.47 feet

and

we can say

tan 63 = h / A

put here value

A = 12 / tan63

A = 6.10

so base of wall to latter distance 6.10 feet

and

we say here

tanθ = 6.10 / 12

θ = 26.95°

so angle between ladder and the wall is 26.95°

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