A boy slides a book across the floor, using a force of 5 N over a distance of 2

m. What is the kinetic energy of the book after he slides it? Assume there is

no friction.

O

A. 5J

O

O B. 2.5 J

O C. 103

O D. 20 J

A horse does 910 J of work in 380 seconds while pulling a wagon. What is the power output of the horse? Round your answer to two significant figures.

What is the pressure of a 59.6-l gas sample containing 3.01 mol of gas at 44.9°c? (r = 0.0821 l • atm / (k • mol), 1 atm = 760 torr) ?

Why is a small crescent of light often observed on the moon when it is exactly in the new phase?

What is the reason behind the tail of a comet moving away from the Sun? A The gravity of Jupiter pulls it away from the Sun. The nucleus of the comet propels it away from the Sun. C. The radiation pressure and solar wind propels it away from the Sun.

Which state accounts for the greatest percentage of all u. s. earthquakes of magnitude 3.5 and above?

How did changing from a light drizzle to a downpour affect the river and the sediment The river increased its slope. The volume of the river decreased. The velocity of the river increased! There was more erosion in the stream.

Which of the fundamental forces explains the structure of atoms and molecules?

It always takes to change the motion of an object. O A. electricity OB. energy C. gravity D. density Reset

What might a psychodynamic theorist think about a person with extreme shyness?

Determine the magnitude of the acceleration for the speeding up phase.