On an essentially frictionless, horizontal ice rink, a skater moving at 3.9 m/s encounters a rough patch that reduces her speed to 48% of her original speed due to a friction force that is 24% of her weight. Use the work—energy theorem to find the length of this rough patch.

d = 2.5 m

Explanation:

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

c)as speed changes, wavelength and frequency change.

everything changes!