What is the energy of a photon with a frequency of 2.2 × 1016 hz? planck’s constant is 6.63 × 10–34 j•s. 1.5 × 10–17 j 8.8 × 10–17 j 1.5 × 10–16 j 8.8 × 10–16 j

What should the power status of a circuit be when measuring resistance with an ohmmeter?

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.