Very light items remain on the surface of water because of surface currents.

True or false

Explain whether demand is likely to be elastic or inelastic for Big Macs. A. Elastic comma since many other fast food items could be considered close substitutes. B. Inelastic due to a lack of close substitutes. C.

Without gravity, the planets would stop orbiting and move

A 1500 MΩ resistor is placed across the terminals of a battery, and a terminal voltage of 2.50 V is measured. When this resistor is replaced with a 5.00 Ω resistor, the terminal voltage decreases to 1.75 V. Find the terminal voltage when a 7.

A red-hot piece of iron is set on a metal workbench. a student says that it transfers heat to the bench and the air by conduction, and that no other heat transfer takes place. what is wrong with the student's reasoning?

A measure of the average kinetic energy of the individual particles in an object is called a. thermal energy. b. conduction. c. convection. d. temperature.

Why does water in hot springs always remain hot? Why doesn't it's thermal energy spread out?

True or false All forces are different; each exerts a particular type of effect on a object

The Yerkes refracting telescope has a 1.00 m diameter objective lens of focal length 20.0 m. Assume it is used with an eyepiece of focal length 2.50 cm. (a) Determine the angular magnification of the planet Mars through this telescope.

A small kid sits on a bike (Anita). A bigger and stronger person (Jamy) pushing the kid so that the kid starts speeding up. (neglect friction). Mark all correct statements about the forces between them. A.

A ___ is awarded to the opposing team when that team violently or dangerously charges a opponent. (in soccer) A) Goalie kick B) Indirect kick C) Direct kick D) Throw in