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In a certain particle accelerator, a proton has an acceleration of 9.0 × 1013 m/s2. The mass of a proton is 1.67 × 10-27 kg. What is the net force exerted on the proton? Be sure to include units in your answer.

Indications for a Short Opponens Engen splint include all of the following EXCEPT

The  graph shown below represents the position of an object as a function of time.At which of the following times is the object moving in the positive direction?

A girl attaches a rock to a string, which she then swings counter-clockwise in a horizontal circle. The string breaks when the rock is at point P in the figure , which shows a bird’s-eye view (as seen from above). Which path (A-E) will the rock follow?  Point P is at the bottom of the picture. Path A: curves up and to the right. Path B: horizontal to the right Path C: curves down and to the right Path D: a line going down and to the right Path E: a line going down

The graph shown below represents the position of an object as a function of time.At which time is the object moving in the negative direction? 

Match the  visual presentation of the hand to the characteristics described

A marathon race is 26 mi and 385 yd long. Estimate how many strides would be required to run a marathon. Assume a reasonable value for the average number of feet/stride. There are 1760 yards in 1 mile.

Which of the following is the most reasonable estimate of the number of characters (typed letters or numbers) in a 194-page book? Assume an average of 600 words per page and a reasonable average number of letters per word.

Indicate whether the following quantities are vectors or scalars.

Take the positive direction as upward and g = 9.80 m/s2 . A ball is thrown downward from the top of a roof with a speed of 25.0 m/s. After 2.00 s, its velocity will be