A box rests on the back of a truck. The coefficient of static friction between the box and the bed of the truck is $0.300$. (a) When the truck accelerates forward, what force accelerates the box?

During a tennis serve, the racket of a tennis player continues forward after it hits the ball. Is momentum conserved in the collision? Explain, making sure that you define the system.

A box rests on the back of a truck. The coefficient of static friction between the box and the bed of the truck is 0.300. When the truck accelerates forward, what force accelerates the box?

All images are oriented in the _______, which means you are looking at a person who is standing erect, with the face gazing forward (anteriorly), arms at the side, and palms facing anteriorly.

In the following sentence, identify the underlined phrase by writing above it PART for participial phrase or GER for gerund phrase.

The scouts are looking forward to $\underline{\text{exploring the cavern. }}$

A certain reaction proceeds in the forward direction with a $\Delta H$ of $216 \mathrm{~kJ}$. Will the reverse reaction be endothermic or exothermic? What will be the value of $\Delta H$ for the reverse reaction?

A jet airplane uses liquid fuel and oxygen from the atmosphere. The engine expels hot gases to the rear and the airplane moves forward. Is a jet a type of rocket? Explain.

An LED (a) emits light when reverse-biased (b) senses light when reverse-biased (c) emits light when forward-biased (d) acts as a variable resistance.

True or False: Forward spatter consists of the blood projected backward from the source, and back spatter is projected outward and away from the source.$\rule{1cm}{1pt}$

How much voltage is there across the second approximation of a silicon diode when it is forward-biased?
a. $0$
b. $0.3 \mathrm{~V}$
c. $0.7 \mathrm{~V}$
d. $1 \mathrm{~V}$

A helium-filled balloon is tied to a light string inside of a car at rest. The other end of the string is attached to the floor of the car, so the balloon pulls the string vertically. The driver now accelerates forward. Which way does the balloon move, forward or backward, or does it not move? Justify your reasoning with reference to buoyancy. (If you have a chance, try this experiment yourself-but with someone else doing the driving!)

The SCS can be turned on by (a) an anode voltage that exceeds forward-breakover voltage, (b) a positive pulse on the cathode gate, (c) a negative pulse on the anode gate, (d) either (b) or (c).

As we discussed earlier showed a situation in which the force of the road on the car’s tire points forward. In other situations, the force points backward. Give an example of such a situation.

A car stuck in a snow bank is spinning its wheels and unable to move either forward or backward. Discuss whether work is being performed by (a) the car (b) the snow bank