A 500-kg elevator is pulled upward with a constant force of 5500 n for a distance of 50.0 m. what is the work done by the weight of the elevator?

Hypothesize what elements may have assisted in the increased depression and suicides across our nation. How can you personally make a difference

Which of the following statements or expressions is most nearly associated with Kepler's Third Law of Planetary Motion? A. P2 = A3 B. Planetary orbits revolve around two foci. C. A planet moves fastest when it is farthest from the sun. D.

Which explains the information needed to calculate speed and velocity? O Both require the total distance, but velocity also requires time and displacemen O Both require time, but velocity requires displacement and speed requires distan Speed

The decomposition a → b + c of a molecule a obeys the rate-law expression rate = 0.080 min-1 [a]. if the initial concentration of a is 0.30 m, what is the concentration after 2.6 minutes? 1. 0.028 m 2. 0.24 m 3. 0.38 m 4. 0.13 m 5. 0.32 m 0

What are two important uses of petroleum

When analyzing forces, it is allowable to break the motion and forces into horizontal and vertical components.

What is the density of a rock which has a mass of 35 grams and a volume of 7.0 cubic centimeters?

Which statement best describes the relative conductivity of semiconductors? a. They are the most conductive elements. b. They are the least conductive elements. c. They are more conductive than metals but less conductive than nonmetals. d.

A tire swing is released from some initial height such that the speed of the tire at the bottom of the swing is 2.5 m/s. What is the initial height of the tire? Note: g = 9.8 m/s2 A 0.13m B 0.16m C 0.32m D 3.1 m

Paleoclimatologists study the climate and its changes throughout earths history. what observation by paleoclimatologists led scientists to predict that the average temperature of the planet is rising due to the combustion of fossil fuels?