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

According to newton's second law of motion, force is equal to mass times acceleration. true or false.

Which substance has the most thermal energy and will have the most heat flow from it? a stovetop burner on medium (200°C) a nuclear reactor core (1000°C) the human body (36°C) air at room temperature (32°C)

A bowling ball and a bag of potato chips are dropped at the same time from a tall tower on the moon. there is no air on the moon. what happens?

What is meant by the frequency of a wave? What is the unit?

Which situations would result in interference? Check all that apply. a wave bouncing off an object a wave bending as it moves through an object a wave scattering as it moves through an object a wave increasing in energy as it hits another wave a

Kaylie is describing the physical properties of an orange and a lemon. which two physical properties can she determine without using any measurement instruments

What is an example of a third class lever and why use it? A) pulley; changes direction B) baseball bat; increases velocity Eliminate C) car jack; increases the weight it can lift D) wheel barrow; makes it easier to move a load

1. The horizontal and vertical components of a projectile's velocity are a. directly proportional C. independent of each other b. inversely proportional d. equal

Which features involve compression? Select the three correct answers. A. Reverse faults B. Anticlines C. Folded mountains D. Normal faults E. Monoclines

You place a cup of 210 degrees F coffee on a table in a room that is 68 degrees F, and 10 minutes later, it is 200 degrees F. Approximately how long will it be before the coffee is 180 degrees F? Use Newton's law of cooling: