study material
Which has more potential energy
a). a cubic mile of water (a lake) behind a 300 ft tall dam
b). a car moving at 120 mph across the Bonneville Salts Flats
c). an oil tanker moving through the Suez Canal
d). an atomic bomb in a silo in North Dakota - correct answer ✔✔A).
B and C aren't stationary, and the height of D is 0.
PE=mgh
Which has more chemical energy?A.A cubic mile of water (a lake) behind a 300 ft tall dam
B.A car moving at 120 mph across the Bonneville Salt Flats
C.An oil tanker moving through the Suez Canal
D.An atomic bomb in a silo in North Dakota - correct answer ✔✔Answer: C.
A and B have no chemical energy. D has nuclear energy. C is a tanker full of oil, which is chemical
Which has more nuclear energy?A.A cubic mile of water (a lake) behind a 300 ft tall dam
B.A car moving at 120 mph across the Bonneville Salt Flats
C.An oil tanker moving through the Suez Canal
D.An atomic bomb in a silo in North Dakota - correct answer ✔✔Answer: D is the only option with any
nuclear energy
Which series goes from least energetic to most?
A.X-rays, visible, ultraviolet, radio
B.Radio, infrared, ultraviolet, X-rays
, C.Gamma, infrared, visible, microwave
D.Microwave, ultraviolet, visible, radio - correct answer ✔✔Answer: B
Refer to the graph from Lecture 2
What energy transformation occurs in the engine of the car?
A. Chemical to potential
B. Heat to mechanical
C. Mechanical to heat
D. Kinetic to potential - correct answer ✔✔B
What energy transformation occurs in the brakes of the car?
A. Chemical to potential
B. Heat to mechanical
C. Mechanical to heat
D. Kinetic to potential - correct answer ✔✔C
The inside of a concrete basement wall is 65° FThe outside is 55°F. Heat will leave the building through
this wall via
A.Convection
B.Conduction
C.Radiation
D.None of the above/don't know - correct answer ✔✔Answer: B
Conduction occurs through solid media...in this case, a concrete wall
Which has higher power?•
A: 1000 Joules used in 10 seconds•
B: 1000 Joules used in 100 seconds•