Acrate slides down a ramp at a constant velocity. the ramp has an incline of 28 degrees above the horizontal the crate weighs 200 newton’s

First is the coefficient of static friction between the map

and the crate.

And the second one is at what angle does the crate begin to

slide if the mass is doubled.

1.    To look for the coefficient of static friction:

ΣF = 0

μ x m x g x cos θ = m * g * sin θ

μ = sin θ/ cos θ = tan θ

μ = tan 24 = 0.45

2.   At what angle… the solution is:

The static friction or μ does not depend

on mass, so the angle is still 24.

weather forecasts are done by collecting data about the current state of the atmosphere mainly the temperature, humidity and wind and using meteorology, to determine the atmosphere that evolves over time. the h and l mean the high and low pressure. the red strip is a warm front. the blue strip is a cold front. the blue and red strip is a stationary front. the purple strip is a occluded front.

explanation:

d. air pressure decreases as altitude increases.