If you were trying to cross a river with the shortest possible time, would you aim your boat slightly upstream, directly across the river, or slightly downstream?

In a oxidation-reduction reaction, the oxidizing agent always undergoes reduction. a. True b. False

Heat transfer between two substances that are in contact is called

A. Protons and neutrons make up the nucleus of an atom. Write 3 - 4 sentences describing the electrostatic force between each pair of particles (proton-proton, proton-neutron, neutron-neutron) and the strong nuclear force between each pair of

Hail stones do a lot of damage when they fall to the Earth and hit homes and cars with great force. They hit with great force because they

In which range is the peak wavelength of a star that is much hotter than the sun most likely to be?

Human skin color varies widely around the world, and children do not always exhibit the exact same coloring as their parents. Based on this information, what is true about human skin color? Skin color is not a genetic trait.

A ball whose mass is 0.4 kg hits the floor with a speed of 4 m/s and rebounds upward with a speed of 2 m/s.

A painter on a ladder, painting the ceiling of a room comments. "It is hotter up here by the ceiling than it is down on the floor". Explain why his observation is correct.

Mass affects/does not affect the conservation of energy?

if 20N of unbalanced force is applied to an object and it accelerates 4m/s/s, then what was the mass of the object?