Alexander has a mass of 70 kilograms. his apartment is on the second floor. 5 meters yo from ground level. How much work does he do against gravity each time he climbs the stairs to his apartment.

Which part of blood makes it possible for the circulatory system to clot the blood, form a scab, and heal wound

What type of reaction fuels the processes seen here? A) nuclear fusion. B) nuclear fission. C) atomic radiation. D) radioactive decay.

A girl launches a toy rocket from the ground. The engine experiences an average thrust of 5.26 N. The mass of the engine plus fuel before liftoff is 25.0 g, which includes fuel mass of 12.3 g. The engine fires for a total of 1.90 s. A.

Judge why a steel block sinks but a steel ship floats. You can assume the density of steel is the same in each scenario.

Imagine that Earth were in a stable orbit at its current distance from the Sun, but around a different star that had twice the mass of the Sun. Which of the following would have to be true? A. Earth's year would be shorter. B.

If you must walk on the highway, you should: Walk on the right side so that approaching cars can see you better Walk on the side with the highest amount of traffic Walk on the side that has the widest shoulders Walk on the left side in order to

A 905 kg test car travels around a 3.25 km circular track. If the magnitude of the centripetal force is 2140 N, what is the car's speed?

Wave X has an amplitude of 5 and wave Y has an amplitude of 4. What will happen when the crest of wave X meets the crest of wave Y? A crest with an amplitude of 1 will form. A trough with an amplitude of 1 will form.

Which of the following codes is used to report the removal of 37 skin tags by electrosurgical destruction?

Two vectors which do not lie along the same line represent what kind of motion? A. Resultant motion B. Scalar motion C. One-dimensional motion D. Two-dimensional motion