Which of these best explains the ability of small insects to walk on the surface of still water?

Is work done if you carry a book across the room at a constant velocity? a. No, the force applied is parallel to the direction of motion. b. Yes, the force applied is parallel to the direction of motion. c.

Which statement describes the formation of a covalent molecule? A) an atom of an element with atomic number 12 reacts with one oxygen atom B) an atom of an element with atomic number 8 reacts with two hydrogen atoms C) an atom of an element with

Nearly all physics problems will use the unit m/s^2 for acceleration. Explain why the seconds are squared. Why isn't the unit given as m/s, as it is for speed

An airplane is flying 25° north of east at a speed of 820 km/h. How fast is it moving to the north? A. 350 km/h B. 0km/h C. 820 km/h D. 740 km/h

The sun radiates energy. Does the earth similarly radiate energy? If so, why can't we see the radiant energy from the earth? 1.

A 20kg box is dropped 13m. how much work is done

Suppose a person whose mass is m is being held up against the wall with a constant tangential velocity v greater than the minimum necessary. Find the magnitude of the frictional force between the person and the wall

A ball is being rolled by a normal push of 1000N. it is opposed by friction which has a force of 0.3kN and air resistance which has a force of 23N. Calculate the resultant force.

Consider a Young's two-slit experiment in which the wavelength of light is 37% smaller than the distance between the slits.

Which of the following situations would produce an average velocity of zero? A) a round-trip to school and back B) a horse galloping in a field C) the criss-crossing path of a flying bug D) a trip, first to the moon, then onto Mars