define the equation for the wavelength of an electron in a cathode ray tube if you know the potential difference between the electrodes. assume the mass of electrom is m, the electron charge is e and the potential difference between the electrodes is v.

In the circuit shown below, with each bulb holding a resistance of 60 ohms, how many amps of current are flowing? express your number as a decimal.

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

Amira pulls a 3 pound wagon 4 feet. how much work has she done?