What type of energy is released when fossil fuels are burned?

a. electrical energy

b. nuclear energy

c. kinetic energy

d. chemical energy

A block has a volume of 0.09m3 and a density of 4000kg/m3. What's the force of gravity acting on the block in water

The specific heat of water is 4.19 x 103 J/kg°C. How much energy will it take to raise the temperature of 0.5 kg of water by 2 degrees?

5 Sam is standing in an empty auditorium. He yells and hears his voice echo. What is happening to the sound to cause this echo?

A baseball goes from zero to 39 m/s in 0.917s. what is its average acceleration?

What is a visual display of data

Sally travels by car from one city to another. She drives for 30.0 min at 80.0 km/hr, 12.0 min at 105.0 km/hr, and 45.0 min at 40.0 km/hr, and she spends 15.0 min eating lunch and buying gas. A. Determine the average speed for the trip. B.

Does parallax affect the precision of a measurement that you make

If a semi-truck decreases its speed from 10 m/s to 5 m/s, its new kinetic energy is:

A force of attraction/repulsion due to the spin of electrons

What did the protoplanets become? a. nebulae b. planets c. solar nebulae d. planetesimals