A worker uses a cart to move a load of bricks weighing 680 N a distance of 10 m across a parking lot. If the worker pushes the cart with a constant force of 209 N, what amount of work does he do?

What would we need to know to calculate both work and power? energy, force, and time force, distance, and time force, mass, and distance mass, force, and energy

Which family on the periodic table is least likely to enter into chemical reactions?

Which of these statements best describes an effect of changes in Earth's magnetic field? A) Southern lights are seen at high altitude places like Alaska. B) Northern lights are seen at low latitude places like Michigan.

A large rectangular raft has a density of 725.5 kg/m3) and floating on a lake. The surface area of the top of the raft is 39.6 m 2 and its volume is 5.2 m3. Assume acceleration of gravity is 9.8 m/s2 and the density of the water is 1000 kg/m3.

Steam at 100°C is condensed into a 38.0 g steel calorimeter cup containing 220 g of water at 29.0°C. Determine the amount of steam (in g) needed for the system to reach a final temperature of 48.0°C. The specific heat of steel is 490 J / (kg * °C).

Why do moon phases repeat about every 28 days

Which energy transformation takes place when a firecracker explodes

Newton's first law states that an object traveling with a constant velocity will remain traveling at a constant velocity unless an unbalanced force acts.

A karate expert breaks a stack of bricks with his bare hand. If the force applied is 520 newtons and the impact time is 5.0 * 10-4 seconds, what is the value of impulse?

Which best describes how heat energy moves within a system?