Which light waves hit ice, most of them bounce off and radiate back into space. Because of this, ice is best described as which kind of surface? ANSWER CHOICES

reflective

absorbent

dense

rough

When the velocity of an object is doubled, by what factor is its momentum changed? by what factor is its kinetic energy changed? a) the momentum is zero. b) the momentum is not zero. c) difficult to say.

The us government wants to allocate billions of dollars in the next 10 years to assure our future energy security. the funds will be spread among a variety of possible energy resources. where do you think the government should put the greatest support: solar energy, wind energy, clean coal, oil exploration, gas exploration, or a combination of sources? are there other efforts that should be explored? support your position with cited information for both questions.

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?