Latent Heats: A metal has a latent heat of fusion of 2.32 × 104 J/kg, a specific heat of 128 J/kg ? K, and a melting point of 228°C. A 30-g pellet of this metal at 16°C hits a solid wall and comes to a complete stop. What would the speed of the pellet have to be in order for it to melt completely when it hits the wall, assuming that all of its kinetic energy is transformed into heat within the pellet?
A. 207 m/s
B. 215 m/s
C. 232 m/s
D. 273 m/s
E. 317 m/s
Answer: E
Physics & Space Science
You might also like to view...
Diffraction from foghorns is best if the waves being diffracted are
A) long. B) short. C) either of these D) neither of these
Physics & Space Science
John is nearsighted and cannot see things beyond 90 cm from his eyes. What is the refractive power of the contact lenses that will enable him to see distant objects clearly?
A) +1.1 diopters B) -1.1 diopters C) -1.7 diopters D) -2.2 diopters E) +2.2 diopters
Physics & Space Science
Which is not a phase of matter?
A) solids B) liquids C) gases D) vacuum
Physics & Space Science
Every square inch of our body, at sea level, sustains ______________ of atmospheric pressure
a. 14.7 lb b. 1.47 g c. 14.7 g d. 1.47 lb
Physics & Space Science