An astronaut has a weight of 2000 kg elephant

What are the two varieties of friction?

Which of the following changes will result in a stronger electromagnet? A. Using a longer nail B. Using a lower voltage C. Using more coils of wire D. Using a shorter wire

A spring with spring constant of 26 N/m is stretched 0.22 m from its equilibrium position. How much work must be done to stretch it an additional 0.12 m

Rank the following in order of decreasing angular speed: an automobile tire rotating at 2.00*103deg/s, an electric drill rotating at 400.0 rev/min, and an airplane propeller rotating at 40.0 rad/s.

Which statement best describes the magnetism shown by a paper clip when it is attracted to a bar magnet close by?

Does air resistence decrease with speed

In one area, the lowest angle of elevation of the sun in winter is 23 ° 18 '. Find the minimum distance, x, that a plant needing full sun can be placed from a fence 4.63 ft high.

A wave has a wavelength of 50 m and a speed of 200 m/s. What is the frequency of this wave in hertz?

A 75.0 kg person stands on a scale in an elevator. (a) What does the scale read (in N and in kg) when the elevator is at rest?

Which of the following best describes the earth's average surface temperature for the past 900,000 years? A. a steady warming trend B. fairly steady temperatures until recently C. prolonged periods of cooling and warming D.