Who first conceived the idea of daylight saving time and when

List two advantages and two disadvantages to worldwide use of SI.

What happens to the composition of an atom to cause it to become positively or negatively charged?

A mass on the end of a spring undergoes simple harmonic motion. At the instant when the mass is at its maximum displacement from equilibrium, what is its instantaneous acceleration? a. At maximum displacement, its instantaneous acceleration is zero.

What do you notice about the graph of position vs. time (x vs t)

a 5.00 kg ball accelerates at a rate of 2.00 m/s squared for 1.50 seconds. calculate the balls momentum after the acceleration

What happens to the particles of the liquid inside a thermometer when the thermometer is heated? They slow down and spread apart. They speed up and spread apart. They slow down and move closer together. They speed up and move closer together.

You did 150 joules of work lifting a 120 - N backpack. how high did you lift the backpack? how much did the backpack weigh in pounds

After the layers of sediment are deposited in one place, they are

A rectangular gasoline tank can hold 50.0 kg of gasoline when full. What is the depth of the tank if it is 0.500-m wide by 0.900-m long, given that the density of gasoline is 6.8 x 102 kg/m3

Which statement best describes the kinetic theory of matter? Matter is made up of compounds that are in constant motion and have energy. Matter is made up of particles that seldom move and do not possess energy.