Which of the following can be caused by weathering? cracks forming in a boulder
rocks melting to form magma
glaciers forming on a mountainside
pebbles combining to form a large rock

The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s

Which of the following is not a part of the respiratory system? a. pharynx b. trachea c. pancreas d. larynx hurrim timed

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity