A waves is set up in a stretched string by plunking it. The velocity of the waves depends on the tensions. Derived the dimensional equation

Considering only the earth's rotation, determine how much later the asteroid would have had to arrive to put the explosion above helsinki at longitude 25˚ e? this would have obliterated the city.

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius