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3 years ago

An object is at rest on an inclined plane. In which direction does the static friction force act?

Physics

1 answer:

Liono4ka [1.6K]3 years ago

8 0

Gravity pulls on the object in the downward direction. The normal force to the inclined plane points in a direction perpendicular to the surface of the plane. Then for the object to be at rest, the frictional force must act parallel to the inclined plane, pointing in the upward direction.

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Answer:

False I think, not 100% sure

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2 years ago

A(n) 77.5 kg astronaut becomes separated from the shuttle, while on a space walk. She finds herself 37.3 m away from the shuttle

NeX [460]

Answer:

Explanation:

The speed of the astronaut can be found with the help of law of conservation of momentum .

mv = MV , M is mass of astronaut , m is mass of object thrown , v is velocity of object thrown and V is velocity of astronaut.

Putting the values

77.5 x V = .94 x 12

V = .14554 m /s

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3 years ago

Consider a brick that is totally immersed in water, with the long edge of the brick vertical. the pressure on the brick is

Gemiola [76]

The bottom . I hope thats the answer you looking for. Let me know

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4 years ago

Dave wishes to get produce from the store, which is a distance D- 2.2 km east of his house. Dave drives his bike to the store at

Neporo4naja [7]

Answer:

a) $t_1=338.4615\ s$

b) $t=1386.0805\ s$

c) $t=23.1013\ min$

d) $d=4400\ m$

e) Since Dave starts from house and finally returns to the house so displacement is zero.

Explanation:

Given:

distance between the house and the store, $s=2.2\ km=2200\ m$

speed of driving from house to store, $v_1=-6.5\ m.s^{-1}$

speed of driving back from store to house, $v_2=2.1\ m.s^{-1}$

Since the store is located towards east from his house and the velocity in this direction is taken negative and contrary to this the velocity in the west direction is taken positive.

time taken in reaching the store:

$t_1=\frac{s}{v_1}$