The speed of light divided by the wavelength of light is the wave _________.
Fill in the blank(s) with the appropriate word(s).
frequency
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Specific heat capacity of ice = 2,000 J/kg-°C latent heat of fusion of water = 334,000 J/kg specific heat capacity of water = 4,000 J/kg-°C The 1 kg block of ice melts into water. The amount of heat absorbed by the ice as it melts is
a. 2,000 J b. 4,000 J c. 20,000 J d. 40,000 J e. 334,000 J
Two capacitors with CA greater than CB are connected in parallel with a battery. Which of the following is true?
a. There is more potential difference across CA. b. There is more potential difference across CB. c. There is the same charge stored on each capacitor. d. There is the same potential difference across both capacitors.
Protostars are difficult to observe because
a. the protostar stage is very short. b. they are surrounded by cocoons of gas and dust. c. they radiate mainly in the infrared. d. the protostar stage is very short, they are surrounded by cocoons of gas and dust, and they radiate mainly in the infrared. e. they are all so far away that the light hasn't reached us yet.
Consider a situation where two moving objects collide and rebound from each other. Linear momentum
a. is definitely conserved b. is definitely not conserved c. may or may not be conserved, depending on the nature of the collision d. none of the above