A prototype shows if a product meets the required needs.

True

False

the power rating of an electric lawn mower is 2200 watts. if the lawn mower was used for 30 mins, and 650 Newtons of force was used, how much distance was covered?

If you drop a bowling ball, a tennis ball, and a feather from the top of a tall building at the same time which one will hit the ground first? (in the absence of air resistance) A. the bowling ball B. the tennis ball C. the feather D.

What happens to the temperature of a substance while its changing state?

What are some organic compounds? is grass an organic compund?

According to the evolutionary perspective of mate selection, why do men and women exhibit different preferences in mate selection? A. Each gender has differing hormone compositions. B. Each gender has differing societal expectations and restrictions.

Radio waves can be sent directly through the earth.

You carry a 7.0 kg bag of groceries 1.2 m above the ground at constant velocity across a 6.8 m room. How much work do you do on the bag in the process? A) 396J B) 466J C) 0.0J D) 82J

The atomic mass of potassium is 39. if its atomic number is 9, it has how many neutrons within each potassium atom?

17. Suppose you were standing on a scale in an elevator in free fall. What would the scale read? 18. Explain why the feeling weightlessness in free fall is not the same as truly being weightless. 19.

The momentum of an isolated system is conserved A) only in inelastic collisions. B) only in elastic collisions. C) in both elastic and inelastic collisions