11-7. A computer that is in screensaver mode uses the same amount of power as one in regular mode. Computers that are in sleep mode, however, use much less power, say, 6 watts per hour. Reflect on computer use on your campus and estimate the amount of time that computing devices are in sleep versus screensaver or use mode. Compute the savings in power that result from sleep mode.

Next a skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 15 with the horizontal. the rope moves parallel to the slope with a constant speed of 0.69 m/s. the force of the rope does 800 3 of work on the skier as the skier moves a distance of 8.4 m up the incline. (a) if the rope moved with a constant speed of 2.2 m/s how much work would the force of the rope do on the skier as the skler moved a distance of 8.4 m up the incline? at what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 0.69 m/s and (c) 2.2 m/s?

Name the non metal condut electricity

The items in the following list are all units of matter. which is the smallest unit that retains the properties of the matter? a.) atom b.) compound c.) electron d.) element