Loading
by BlastRoom
Account for mechanical energy converted into internal energy by friction.
#physics
20 questions
One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.
Outrun the snow together.
Earn blasts, then hunt the other team.
Answer to earn energy, then climb.
The class blasts through walls together.
Bid on mystery lots. Most money wins.
Sell tours. Nice, standard, or a total scam.
Answer, restock, and serve the rush.
More correct answers pulls the rope your way.
Answer, then shoot down the alien wave.
Answer, then tap to leap the frozen ridge.
Use the energy-bar figure for a crate on a level floor. Friction is the only horizontal force. What belongs in the blank bar?
An energy-bar figure shows a sled on level snow before and after it moves, with the final internal-energy bar left unknown. Which value completes the internal-energy bar?
Use the bar chart for a cart moving up a rough ramp. What value must the missing bar have?
A puck slides down a rough ramp, and the energy-bar figure shows its before-and-after energies with the final internal-energy bar left unknown. Which bar accounts for the shortfall?
The energy-bar figure shows a block sliding on a level table, with the final internal-energy bar missing. What completes the chart?
Use the energy-bar figure for a skateboarder braking on level pavement. What does the blank bar show?
A box is pushed at constant speed across a rough level floor, and the push does 75 J of work. Use the energy-bar figure. What value belongs in the blank bar?
An energy-bar figure shows a crate moving on a rough track, with the internal-energy bar after the motion left unknown. What internal-energy bar accounts for the change?
An 18 N friction force acts opposite a box’s motion while the box slides 5.0 m along a level floor. How much energy is converted into internal energy of the box, floor, and air?
A 3.0 kg cart moving at 4.0 m/s is brought to rest by friction on a level track. How much energy is converted into internal energy of the cart, track, and air?
A crate slides 8.0 m across concrete while a 250 N kinetic friction force opposes its motion. How much internal energy is generated in the crate, concrete, and surrounding air?
A 0.50 kg puck moving at 12 m/s stops because of friction on level ice. How much energy is converted into internal energy of the puck, ice, and air?
A 40 N friction force acts on a sliding block for 2.5 m along a level surface. What amount of energy is converted into internal energy?
A 1200 kg car moving at 10 m/s brakes to rest on a level road. Ignoring other energy transfers, how much energy becomes internal energy in the brakes, tires, road, and air?
A hockey puck slows on rough ice while its height stays the same. Which statement best accounts for the energy change?
A student drags a box at constant speed across a rough floor and does 300 J of work. The box’s kinetic energy and height do not change. Where did the 300 J go?
A skateboard rolls up a rough ramp and stops. Its gravitational potential energy increases, but not by as much as its initial kinetic energy. What happened to the missing mechanical energy?
A car’s brakes bring it to rest from high speed on a level road. Which observation is direct evidence that mechanical energy was converted into internal energy?
A block slides to rest on a level floor because of friction. If it instead starts with twice the speed, how does the internal energy generated by friction change?
For a constant friction force f acting over a sliding distance d, which expression gives the internal energy generated by friction?
Crack the passcode before the zombies get in.
Answer, then swat bugs for bonus points.
Race through questions at your own speed.
Same question on every screen. Fastest wins.
Pick a tile, answer, hit bonuses and steals.
The First Law of Thermodynamics
30 questions
