Kaitlyn builds a project in which light bulb a and light bulb b are in parallel circuits. the project has a switch and uses a battery for its source of voltage. she connects her battery and neither light turns on. which of the following could possibly be the problem with her project?

a. light bulb a is broken.

b. light bulb b is broken

c. the switch is not closed

d. any of these would cause the problem described

An ice-making machine inside a refrigerator operates in a carnot cycle. it takes heat from liquid water at 0.0 degrees celsius and rejects heat to a room at a temperature of 19.2 degrees celsius. suppose that liquid water with a mass of 76.3kg at 0.0 degrees celsius is converted to ice at the same temperature. take the heat of fusion for water to be l_f = 3.34*10^5 j/kg.how much energy e must be supplied to the device? express your answer in joules.

The friction of the water on a boat produces an acceleration of -10. m/s2. if the boat is traveling at 30. m/s and the motor is shut off, how long it take the boat to slow down to 5.0 m/s?

If the area of a square has increased by a factor of 16, by how much has each side increased?