Lead has a latent heat of fusion of 2.32 × 104 J/kg, and a specific heat of 128 J/(kg K), and a melting point of 228°C. The ambient temperature is 16°C. A 30-g lead bullet hits a solid surface and comes to a complete stop
What would the velocity of the bullet have to be in order for it to melt completely when it hits the wall, assuming that all its kinetic energy is transformed into heat? A) 207 m/s
B) 215 m/s
C) 232 m/s
D) 273 m/s
E) 318 m/s
E
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Saturn's bands, oval storm systems, and turbulent flow patterns are powered by:
A) convective motion and rapid rotation. B) the Greenhouse Effect. C) a liquid metallic hydrogen interior. D) the fusion in Saturn's core. E) the tides of Titan.
What is the period of revolution of a planet in circular orbit around a star of 4.0 solar masses if it is at a distance from the star equal to that of the Earth from the Sun?
What will be an ideal response?
What is the angular resolution of the human eye?
A) about 1 arcminute, or 1/60 of a degree B) about 1 milliarcsecond C) about 1 arcsecond (1/3600 of a degree) D) about 1 degree
An object with an initial velocity of 3.50 m/s moves east along a straight and level path. The object then undergoes a constant acceleration of 1.80 m/s2 east for a period of 5.00 s. How far does the object move while it is accelerating?
(F) 6.30 m (G) 17.5 m (H) 27.2 m (J) 40.0 m