Direct current, dc, flows in a direction while alternating current, ac, the direction of flow a) single, is unidirectional b) constant, periodically reverses c) opposite direction, is multiple eliminate d) periodically reversing, is constant

We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?

Which symbol in the first law of thermodynamics represents the sum of the chemical and thermal energy stored in atoms and molecules? a. q b.w c.v d.u

Consider a u-tube whose arms are open to the atmosphere. now equal volumes of water and light oil (ρ = 49.3 lbm/ft3) are poured from different arms. a person blows from the oil side of the u-tube until the contact surface of the two fluids moves to the bottom of the u-tube, and therefore, the liquid levels in the two arms are the same. if the fluid height in each arm is 30 in, determine the gage pressure exerted by the person on the oil by blowing.