A girl drops a rock 30 meters and measures the time of the drop at 4.02 seconds. What is the value of the gravitational acceleration on her new planet?

Achievement is one of the - needs identified by the psychologist Henry Murray. The motivation to achieve is a need or desire to attain a certain -.

What is the magnitude of the force a 25 mC charge exerts on a + 2.5 mC charge 16 cm away?

What is the transfer of energy by electromagnetic waves? 1. thermal energy 2. convection 3. radiation

Which is a longitudinal wave that requires a medium to move? A. sound wave B. Ocean wave C. Lightwave D. Radio wave E. Microwave

Problem 3. A 1.8 m wide by 1.0 m tall by 0.65m deep home freezer is insulated with 5.0cm thick Styrofoam insulation.

Two bullets have masses of 3,0 g and 6.0g, respectively. both are fired with a speed of 40.0 m/s. Which bullet has more kinetic energy? What is the ratio of their kinetic energies

What does it mean that a form of energy might take more energy to harness than it provides? Are renewable resources always renewable, or can they become non-renewable? Why aren't renewable resources used for everything that we use energy for?

What would a sound wave do if it traveled from a gas to a liquid? •stop •stay the same speed •slow down •speed up

A rock is thrown downward into a well that is 7.92 m deep. Part A If the splash is heard 1.17 seconds later, what was the initial speed of the rock? Take the speed of sound in the air to be 343 m/s.

Which drum would make a sound that fades away faster - one that makes a loud sound or one that makes a more mellow sound Why?