A baseball is pitched with a velocity of 35 m/s. If the baseball has a mass of
0.146 kg, what is its kinetic energy on its way to home plate?

What term do psychologists use to designate our personal awareness of feelings, sensations, and thoughts?

Light from a sodium lamp passes through a diffraction grating that has 1000 slits per millimeter. the interference pattern is viewed on a screen 1.000 m behind the grating. the first (m = 1) two bright yellow fringes that are visible are 0.7288 m and 0.7300 m from the central maximum. what are the wavelengths of these two fringes?

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?