A mirage is caused by hot air near the ground Select one:
O a reflecting light rays upward.
O b. refracting light rays upward.
O c. reflecting light rays downward.
O d. refracting light rays downward,

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell

Atank is filled with an ideal gas at 400 k and pressure of 1.00 atm . part a the tank is heated until the pressure of the gas in the tank doubles. what is the temperature of the gas?

Calculate a pendulums frequency of oscillation (in hz) if the pendulum completes one cycle in 0.5s.