Two long, straight wires are parallel and 25 cm apart. (a) if each wire carries a current of 50 a in the same direction, what is the magnetic force per meter exerted on each wire? (b) does the force pull the wires together or push them apart? (c) what happens if the currents flow in opposite directions?

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

Identify some abiotic characteristics of the tundra biome.