If an object has a mass of 81 kg, what is its approximate weight on earth?

Kate is researching air pollution and finds some information on ozone. She knows that ozone is a good thing as part of the ozone layer, so why is it also an air pollutant? A) At ground level, ozone contributes to smog.

How can a high school student have more momentum than a truck

How is energy passed in a parallel circuit?

Why does it take much longer time and distance to stop a moving ship in water than a moving car on the road

The length of a rectangular sheet of metal decreases by 34.5 cm. Its width decreases proportionally. If the sheets original width was half the original length and the new area of the sheet is 1.

Why doesn't a transformer work with direct current? why is ac required?

Which term describes the region in which an electron is most likely to be found? path cloud isotope orbital

The distance between two consecutive nodes of a standing wave is 21.9 cm. the hand generating the pulses moves up and down through a complete cycle 2.13 times every 3.65 s. find the velocity of the wave. answer in units of m/s.

Which statement is NOT true? Light travels with or without a medium Light travels faster than sound Sound must have a medium to travel through Both light and sound must have a medium to travel through

When light bends as it enters a different medium the process is known as what?