At 5.0 minutes, the temperature of the water reaches 100 °C. The volume of the water in the urn is 3 000 cm and its density is 1.0 g/cm². The specific heat capacity of water is 4 200 J/(kg °C).
Calculate the thermal energy gained by the water.

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

Charge is distributed along the entire x-axis with uniform density λ. how much work does the electric field of this charge distribution do on an electron that moves along the y-axis from y = a to y = b? (use the following as necessary: a, b, ε0, λ, and q for the charge on an electron.)

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