Hree discrete spectral lines occur at angles of 10.2°, 13.6°, and 15.0°, respectively, in the first-order spectrum of a diffraction grating spectrometer. (a) if the grating has 3770 slits/cm, what are the wavelengths of the light?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2.