What is kinetic energy?(1 point)
Responses
stored energy
stored energy
thermal energy
thermal energy
the energy of radiation
the energy of radiation
the energy of motion
1 month ago
1 month ago
A fisherman in a boat is drinking a cup of hot coffee. The large lake below his boat is full of cold water. Which statement is an accurate comparison of the lake water and the coffee?(1 point)
Responses
The coffee will have more total thermal energy, and the particles in the coffee will be moving faster.
The coffee will have more total thermal energy, and the particles in the coffee will be moving faster.
The lake will have more total thermal energy, but the particles in the coffee will be moving faster.
The lake will have more total thermal energy, but the particles in the coffee will be moving faster.
The coffee will have more total thermal energy, but the particles in the lake water will be moving faster.
The coffee will have more total thermal energy, but the particles in the lake water will be moving faster.
The lake will have more total thermal energy, and the particles in the lake water will be moving faster.
1 month ago
The lake will have more total thermal energy, but the particles in the coffee will be moving faster.
1 month ago
Use the image to answer the question.
A photo shows a piece of gallium melting in someone’s hand.
The gallium in the image is melting in the person’s hand. Which changes will occur on a microscopic level?
(1 point)
Responses
The gallium atoms will gain potential energy, moving freely from each other.
The gallium atoms will gain potential energy, moving freely from each other.
The gallium atoms will increase in temperature.
The gallium atoms will increase in temperature.
The gallium atoms will gain kinetic energy.
The gallium atoms will gain kinetic energy.
The gallium atoms will be moving faster on average.
1 month ago
The gallium atoms will gain kinetic energy.
1 month ago
Which object will have particles with the highest average kinetic energy?(1 point)
Responses
water at 37°C in a glass
water at 37°C in a glass
an iceberg at 0°C
an iceberg at 0°C
water at 40°C in a swimming pool
water at 40°C in a swimming pool
a drop of water at 90°C
1 month ago
A drop of water at 90°C.
1 month ago
As water becomes warmer, boils and then becomes water vapor (steam), what happens to its kinetic and potential energies?(1 point)
Responses
The particles gain both potential and kinetic energy.
The particles gain both potential and kinetic energy.
The kinetic and potential energies of the particles will stay the same.
The kinetic and potential energies of the particles will stay the same.
The particles will gain potential energy as it heats up, but the kinetic energy of the particles will stay the same.
The particles will gain potential energy as it heats up, but the kinetic energy of the particles will stay the same.
The particles gain kinetic energy as it heats up, but the potential energy of the particles will stay the same.
1 month ago