Antonio wants to replace the lightbulbs in his house. How much money would he save in one year by replacing 10 incandescent bulbs with 10 CFL bulbs?

incandescent$1.47 per bulb CFL $3.99

annual operating cost incandescent $32.86 CFL $7.67

A force that needs to touch something to affect it

A 2-kg object is moving horizontally with a speed of 4 m/s. How much net force is required to keep the object moving at this speed and in this direction?

Compare the weight of a mountain climber when she is at the bottom of a mountain with her weight when she is at the top of the mountain. In which case is her weight larger? a. Both are the same. b. She weighs four times as much at the top. c.

A 80 mW laser beam is polarized horizontally. It then passes through two polarizers. The axis of the first polarizer is oriented at 30∘ from the horizontal, and that of the second is oriented at 60∘ from the horizontal.

If you had a trapped gas and continued to cool it until the lowest possible temperature is reached the temperature is called

If you are going 30 miles an hour in good condition, it will take how many feet to stop.

Name of group to which hydrogen belongs to

Which would increase the reaction rate? Check all that apply. A. Raising the temperature B. Stirring the reaction C. Raising the activation energy D. Adding a catalyst

How much of the electrical energy transformed by a common light bulb becomes heat energy?

What is the current for a 1200W microwave connected to 110V outlet.