A running back practices for his upcoming football game by running drills. He runs forward 62.4 yards, and runs backward for 18.5 yards, then runs forward again for 18.3 yards. What is the magnitude of the athlete's displacement?

What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34

Awave has a wavelength of 7 mm and a frequency of 19 hertz. what is its speed?

Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.