Why do animals use echolocation? Check all that apply.

to find each other

to find food

to find warmer areas

to find sunlight

to find their way

All But one describes an effect of aging on the musculoskeletal system. A) loss of muscle tone B) bones become fragile C) increased osteoporosis D) fluid in joints builds up

A girl walks South at 2.7 m/s. What is the y component of her velocity

This is a computer program, why is there an error between the computer values and the nominal values of R?

7. A box is pulled straight across the floor at a constant speed. It is pulled with a horizontal force of 48 N. a. Find the net force (in N) on the box. b. Find the force of friction (in N) from the floor on the box. c.

Several paper clips dangle from the north pole of a magnet. The induced pole in the bottom of the lowermost paper clip is a

Which is a use of fiber optics?

When a positively charged conductor touches a neutral conductor, the neutral conductor will:

Definition of the rule E=mc^2

A 3.7 kg block is pushed along a horizontal floor by a force modifyingabove upper f with right-arrow of magnitude 25 n at a downward angle θ = 40°. the coefficient of kinetic friction between the block and the floor is 0.26.

When one object heats another, does the temperature increase of one object always equal the temperature decrease of the other object? Explain