Which of the following is a dark sticky substance that is found in tobacco?

a.

tar

b.

nicotine

c.

nitrogen

d.

carbon monoxide

An object of mass of 78 kilograms is lifted through a height of 6 meters. How much work is done?

A research submarine has a 30-cm-diameter window that is 8.6cm thick. The manufacturer says the window can withstand forces up to 1.2*10^6 N.

Once a falling has reached a constant velocity, the object

When an object with a constant speed changes its direction, it will be accelerating.?

Electrical Force is possible because of

How does the brightness of a bulb tell you about the energy of electrons passing through it?

Why do you think sound travels faster in steel than it does in wood? (Hint: Think about the densities of the two materials, and how the particles might be arranged.)

On which body would a 100kg man have the least gravitational potential energy when lifted to a height of 3 meters

Which of the following factors can negatively affect development? a. Political corruption and instability b. Lack of resources c. Lack of education d. All of the above

A golf ball is hit with an initial velocity of 155 ft/s at an angle of 23 degrees with the horizontal. After 1.4 seconds, how far has the golf ball traveled horizontally and vertically?. a. 199.7 feet horizontally and 75.2 feet vertically. b. 60.