How can scientists know for sure that the cell theory is true? What evidence do we have to prove it

Which has more momentum? A paper airplane with a mass of 10g flying at a velocity of 4m/s or a real airplane that is parked at a runway with a mass of 1000kg and a velocity of 0m/s

Calculate the distance in kilometers that Charlie runs if he maintains an average speed of 8 km

Which is the standard unit of time in the metric system?

Jim releases a compressed spring. Describe the energy transformation taking place in the spring. Potential energy to kinetic energy, and total energy is conserved Kinetic energy to potential energy, and some energy is lost as heat Kinetic energy to

A party mix is made by adding nuts that sell for $2.502.50 per kg to a cereal mixture that sells for $11 per kg. How much of each should be added to obtain 6060 kg of a mix that will sell for $2.102.10 per kg

A rocket moves away from the surface of the earth. As the distance r from the center of the planet increases, what happens to the force of gravity on the rocket?

Why am i not floating?

A person holds onto an object for 2 minutes, but doesn't move the object. Is work done on the object?

Warming in front of a fire while camping is an example of? A. Conduction B. Convection C. Radiation

In which medium would light travel the fastest? Question 21 options: a. across a room b. in a swimming pool c. through outer space d. through a railroad track