Heather in her corvette accelerates at the rate of (3.00i - 2.00j) m/s2, while jill in her jaguar accelerates at (1.00i + 3.00j) m/s2. they both start from rest at the origin of an xy coordinate system. after 5.00 s,

a) what is heather’s speed with respect to jill?


b) how far apart are they?


c) what is heather’s acceleration relative to jill?

Which of these metals are magnetic?

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.

How are positive ions different from neutral atoms