A machine is supplied energy at a rate of 4,000 W and does useful work at a rate of 3,760 W. What is the efficiency of the machine?

Which force is responsible for the formation of waves? A. gravity B. wind C. friction D. centripetal

How many independent variables are present in the electrolysis experiment?

A circuit consists of a 12.0-V battery connected to three resistors (44ohm, 17ohm and 110ohm) in series. a. Find the current that flows through the battery. I=__mAb. Find the potential difference across the 44ohm resistor. V1=__Vc.

Given light with frequencies of: 5.5 x 1014 Hz, 7 x 1014 Hz and 8 x 1014 Hz, calculate the wavelengths in free space. What color are these waves?

When tuning a guitar, a musician plays two strings at once. These sound waves overlap and often appear to get louder and softer if the strings are not in tune.

Which branch of science includes the laws of matter and energy?

A very famous motorcyclist plans to jump across a canyon 3.5 kilometers wide. he plans to use a 30 degree ramp and leaves it at 196 m/s. Will he make it? show all calculations to prove your answer

What captures energvy from sunlight during photosynthesis

The scientific theories developed by copernicus galileo and newton resulted in

How could you find out which wire is broken in a cable?