Which of these is NOT a mechanical wave? Question 2 options:

Sound waves

All waves are mechanical waves

Seismic waves

Light waves

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

6–48 bananas are to be cooled from 24 to 138c at a rate of 215 kg/h by a refrigeration system. the power input to the refrigerator is 1.4 kw. determine the rate of cooling, in kj/ min, and the cop of the refrigerator. the specific heat of banana above freezing is 3.35 kj/kg·8c.

Why do astronauts in the space shuttle weigh less?