Two bodies, one hot and one cold, are kept in vacuum. What will happen to the temperature of the hot body after some time?

The radius of earth is 6,370,000m. Express this measurement in km in scientific notation with the correct number of significant digits.

Explain how an increase in temperature might affect glacier size and water salinity

You watch a distant lady driving nails into her front porch at a regular rate of 2 strokes per second. You hear the sound of the blows exactly synchronized with the blows you see. And then you hear one more blow after you see her stop hammering.

What type of charge do neutrons carry?

While exploring a castle, Exena the Exterminator is spotted by a dragon who chases her down a hallway. Exena runs into a room and attempts to swing the heavy door shut before the dragon gets her.

Which of the following does not describe a scientific theory?

A radiographer in a hospital is preparing a sample of technetium-99. Name two protective measures she should be to ensure she is safe from the radiation?

Carlota does 2000 J of work on a machine. The machine does 500 J of work. What is the efficiency of the machine?

Una locomotiva traina un solo vagone, che ha la sua stessa massa, con la forza di 4000 N. Alla locomotiva vengono aggiunti altri quattro vagoni identici al primo: quale forza deve sviluppare adesso la locomotiva affinché il convoglio mantenga la

which types of thermal energy transfer are primarily responsible for heating the water in a pot on a stove?