A dancer lifts a 200-kg barbell with an acceleration of 3 m/s2. How much force does the weightlifter use to raise the barbell

Why do electron microscopes have higher resolving power than light microscopes?

Two vehicles collide and stick together. After the collision, their combined y-momentum is 2.40 * 104 kilogram meters/second, and their x-momentum is 7.00 * 104 kilogram meters/second.

Matt is driving down 7th street. He drives 150 meters in 18 seconds. Assuming he does not speed up or slow down, what is his speed?

A wave with a short wave length will also have ... ?

Your car is traveling behind a jeep. Both are moving at the same speed, so the velocity of the jeep relative to you is zero. A spare tire is strapped to the back of the jeep. Suddenly the strap breaks, and the tire falls off the jeep.

What technology makes up the transducer? a. A phased array c. A PET scan b. An x-ray d. A laser

Explain how birthrates and death rates influence the size of population.

What happens to the resistance of a wire as its length increases? A. The resistance decreases. B. The resistance is not affected by a change in wire length. C. The resistance alternates between high and low values. D. The resistance increases.

What is true about molecular compounds that dissolve in water

What is a lenticular (S0) galaxy? A galaxy with a disk and central bulge like a spiral galaxy, but with no spiral arms A galaxy with a smooth brightness profile, lacking the central bulge and disk of a spiral galaxy A spiral galaxy with fuzzy and