One example of an energy-efficient device is a (n)

a. fluorescent light bulb.

b. drafty window.

c. incandescent light bulb.

d. gasoline-powered car.

What is the magnitude of a the vertical electric field that will balance the weight of a plastic sphere of mass that has been charged to - 3.0 nC? g

An 80 kg hockey player is skating at 5 m/s. He collides with the wall and comes to a stop in. 2 s. What was the force of his impact on the wall

Two microwave frequencies are authorized for use in microwave ovens: 895 and 2560 mhz. calculate the wavelength of each.

Zoe went on a fishing trip. On the first day she caught 9 catfish and 6 trout. On second caught 17 catfish and 13 trought. On which day of the fishing trip did zoe catch a lower ratio of catfish to trout?

Suppose a cylindrical habitat in space 6.80 km in diameter and 24 km long has been proposed. Such a habitat would have cities, land, and lakes on the inside surface and air and clouds in the center.

Table tennis the path of a table-tennis ball after being hit and hitting the surface of the table can be modeled by the function h=-4.9t (t-0.42) where h is the height in meters above the table and t is the time in seconds.

A coat rack weighs 65.0 lbs when it is filled with winter coats and 40.0 lbs when it is empty. The base of the coat rack has an area of 452.4 in2.

An initially stationary object experiences an acceleration of 6 m/s2 for a time of 15 s. How far will it travel during that time?

How was helium first discovered? mining of the radioactive element uranium using spectral analysis of the Suns' emission spectra o hubble obtaining samples from explosions off the surface of the sun deep sea mining off the coast of Texas

If you get something in your eyes in the lab, what is the most important thing to do?