A 73.4 kg basketball player

accelerates herself upward at

2.25 m/s. How much upward

force does she exert?

(Hint 1: Don't forget her weight!)

(Hint 2: Her force is not the same thing as

the Total Force.)

(Unit = N)

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Which element has the greatest number of valence electrons? A. Silicon B. chlorine C. sodium D. magnesium

Objects that are falling toward Earth in free fall move a. faster and faster. c. at a constant velocity. b. slower and slower. d. slower then faster.

A laboratory dish, 20 cm in diameter, is half filled with water. One at a time, 0.50/µL drops of oil from a micropipette are dropped onto the surface of the water, where they spread out into a uniform thin film.

Where do deep currents flow?

If a car drove 121km/hr on average how far did it travel in 116min?

A 10 kg farm wagon is sitting at the top of a hill that makes a 370 angle with the horizontal when the brake suddenly fails. The cart rolls down the hill for 50 m and then hits a haystack. It plows 2.0 m into the stack before coming to rest.

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What is the velocity of a beam of electrons that go undeflected when passing through crossed (perpendicular) electric and magnetic fields of magnitude 1.63*104V/m and 2.50*10-3T, respectively? me=9.11*10-31kg, e=1.60*10-19C.