You accidentally dropped a 3.5 kg glass platter. Before it hit the floor, the motion was entirely

in the vertical direction. When it hit the floor,

it broke into three pieces and they all moved

out in the plane of the floor. Imagine a coor-

dinate system on the floor. Piece 1 had a

mass of 1.3 kg and it moved off with a velocity

of 1.8 m/s at an angle of 52˚ counterclockwise

from the positive x axis. Piece 2 with a mass

of 1.2 kg moved off with a velocity of 2.5 m/s

at an angle of 61˚ clockwise from the negative

x axis. Find the mass and the velocity of

piece 3.

To protect all four receptacles on a branch circuit that surrounds a swimming pool, you would install which of the following configurations? a. gfci feed-through receptacle at the end of the load's circuit b. gfci-terminated receptacle at the beginning of the load's circuit c. gfci feed-through receptacle at the beginning of the load's circuit and the other receptacles connected to the load side of that receptacle d. gfci-terminated receptacle at each end of the load's circuit

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called

The ph is the a. independent variable b. the dependent variable c. control group