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. 20 j

O B. 2.5 j

O c. 5 j

O D. 10 j

There are several ways to model a compound. One type of model is shown. What is the chemical formula for the molecule modeled? CHO C4H11O2 C6H12O2 C6H9O

2. A 100 kg box initially traveling at 10 m/s encounters a frictional force and takes 5 seconds to slow down to a stop. a. Determine the acceleration of the box (direction matters + or - ) b.

There is an electric field in the region between the two plates. The magnitude of this electric field is ed. This imposes another condition on the charge densities on the surfaces of the plates. How can this condition be expressed?

Two identical cars, one on the moon and one on the earth, have the same speed and are rounding banked turns that have the same radius r. There are two forces acting on each car, its weight mg and the normal force FN exerted by the road.

Check that equation 19.1 is dimensionally correct. the factor cw (specific heat of water is sometimes omitted because its numerical value if 1. what is wrong with doing this?

Suppose all the grains in a sample of sand were exactly the same size. Could the sample still be a heterogeneous mixture?

A refrigeration system is to cool bread loaves with an average mass of 350 g from 30 to - 10°C at a rate of 1200 loaves per hour with refrigerated air at - 30°C. Taking the average specific and latent heats of bread to be 2.93 kJ/kg·°C and 109.

What is an example of static friction

A book with a. mass of 1 kg is sliding to the left of a table. If the frictional force on the book is 5 N, calculate the book's acceleration. Is it speeding up or slowing down?

Blocks with masses of 3.0 kg, 4.0 kg, and 5.0 kg are lined up in a row on a frictionless table. All three are pushed forward by a 16 N force applied to the 3.0 kg block. How much force does the 4.0 kg block exert on the 5.0 kg block?