Which professional most likely uses x-ray technology? check all that apply.
a. a food critic
b. a dentist
c. a financial analyst
d. an astronomer
e. an airport-security screener
f. a pharmacist

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

The energy equivalent of the rest mass of an electron is

Diverging mirrors and lenses always produce images