Infared waves can be used to
a. generate electricity
b. kill cancer cells
c. change one color into another
d. warm food

If you mix chlorine lithium and nickel together which two elements would be the most reactive

Astring that is fixed at both ends has a length of 1.05 m. when the string vibrates at a frequency of 91.0 hz, a standing wave with five loops is formed. (a) what is the wavelength of the waves that travel on the string? (b) what is the speed of the waves? (c) what is the fundamental frequency of the string?

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec