1. How many joules of heat must be transferred to a 420-g aluminum pizza pan to raise its temperature from 22°C to 232°C? The specific heat of aluminum in this temperature range is 0.90 J/g•°С. Show your work. Q = (mass) (Cp) (△T)
Q=
Cp=
Mass=
△T=

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

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.

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?