Scarcity exists because there are limited resources to meet unlimited wants and needs. true or false.

Which statement best describes heat and thermal energy? They are different words for the same thing. They represent different concepts. Heat is what happens when thermal energy stops moving between substances.

6. A particle of mass is released from the position A of a semi-sphere and moves frictionless on its inner surface as shown in the figure. i) Plot the force - cos diagram.

Jack travelled 360 km at an average speed of 80 km/h. Elaine took 1.5 hours more to complete the same amount of distance. What was Elaine's average speed for the whole journey? km/h

Describe Ohm's law and its limitations;

A child bounces a 60 g superball on the sidewalk. The velocity change of the superball is from 22 m/s downward to 15 m/s upward.

A gas in a piston is compressed doing - 439 j of work, and its internal energy increases by 318 j. how much heat flows? (be careful with + and -. + w = expansion. + q = added, + u = temp goes up) (unit = j)

A loop of wire is placed in a uniform magnetic field. (a) For what orientation of the loop is the magnetic flux a maximum? The plane of the loop is perpendicular to the magnetic field. The plane of the loop is parallel to the magnetic field.

Dr. Arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode.

Stephen buys a new mop he travels 3 km south and the. 4 km east and then 3km north how far does he need to go to get back. To where he started

The elements with the largest atomic radii are found in the