A 10 kg crate of books is at rest on the floor. A 45 N force is applied to the crate making it accelerate at 2 m/s2. The force of friction between the floor and the crate is Newtons.

In order for the bug to fly through the air a force has to push the bug forward. identify this force. how does the bug produce

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The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.