A force of 300 lbf moves a truck at a speed of 40 mi/h up

Conceptual Physics 12
Find the change in the force of gravity between two planets when the distance between them becomes 10 times smaller.

Sears and Zemansky's University Physics with Modern Physics 13
Problem 32E On a horizontal, frictionless table, an open-topped 5.20-kg box is attached to an ideal horizontal spring having force constant 375 N/m. Inside the box is a 3.44-kg stone. The system is oscillating with an amplitude of 7.50 cm. When the box has reached its maximum speed, the stone is su

Myers' Psychology for AP 2
Researchers investigating conditioning throughout the history of psychology reached very different conclusions about how humans learn behaviors. Explain how these theorists might explain this example of behavior and response: A child cries when she sees a large pile of peas on her dinner plate. Edwa

BSCS Biology: A Molecular Approach 9
Describe the steps in the Oparin-Haldane hypothesis for the origin of life.

Campbell Biology 9
How can the freezing of water crack boulders?

Campbell Biology in Focus - Standalone book 1
Why are action potentials usually conducted in one direction? a. The nodes of Ranvier conduct potentials in one direction. b. The brief refractory period prevents reopening of voltagegated Na+ channels. c. The axon hillock has a higher membrane potential than the terminals of the axon. d. Ions can fl

Principles of Economics 9
Fredo loves watching Downton Abbey on his local public TV station, but he never sends any money to support the station during its fund-raising drives. a. What name do economists have for people like Fredo? b. How can the government solve the problem caused by people like Fredo? c. Can you think of wa

Biochemistry 9
If the amino acids alanine and glycine react to form a peptide bond, is there more than one reaction product? If so, what products?