Janice has just measured the density of an object. Which value is possible? (Density: D = )

-1 g/cm3

4 m/s

-3 m/s

6 g/cm3

Although homicides represent a very small number of overall crimes, they are often focused on by the media. Why do you think this is the case? What consequences do you think that this has?

A TV has a power of 130 watts and an efficiency of 80 percent. How much power is wasted as heat? A. 104.0 W B. 1.6 W C. 26.0 W D. 6.5 W

Light is traveling in air at a speed of 300,000 km/s. Which substance would cause the light to refract the LEAST? A. ruby (speed of light = 170,000 km/s) B. glass (speed of light = 200,000 km/s) C. water (speed of light = 225,000 km/s) D.

Explain why we see the Milky Way as a faint band of light stretching across the sky.

Compare and contrast turbojets and rocket engines

Which term identifies the dark smooth areas on the surface of the moon? craters terrae maria regolith

1. work is a transfer of 2. a small 20-killogram canoe is floating downriver at a speed of 2 m/s. what is the caanoes kinetic energy?

If you are asked to determine an objects speed, what information must you have? A: distance and period of time B: distance and direction C: period of time and direction D: distance and change in position

What is the kinetic energy of a 1150 kg sports car traveling down the road with a speed of 29 m/s?

3. A 2,000-kilogram railroad car moving at 5 m/sec to the east collides with a 6,000-kilogram railroad car moving at 3 m/sec to the west. If the cars couple together, what is their velocity after the collision?