An object’s x-position is shown in the boxed graph of the following set of graphs. Which of the other graphs in the set most correctly describes its x-velocity?
A. A
B. B
C. C
D. D
E. E
B. B
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An aluminum electric tea kettle with a mass of 500 g is heated with a 500-W heating coil. How long will it take to heat up 1.0 kg of water from 18°C to 98°C in the tea kettle?
The specific heat of aluminum is 900 J/kg ? K and that of water is 4186 J/kg ? K. A) 5.0 minutes B) 7.0 minutes C) 12 minutes D) 15 minutes E) 18 minutes
A uniform solid sphere rolls without slipping along a horizontal surface. What fraction of its total kinetic energy is in the form of rotational kinetic energy about the CM?
What will be an ideal response?
What is the magnitude of the angle of dip at Earth's magnetic north pole?
A gas is confined to a rigid container that cannot expand as heat energy is added to it. This process is
A) isothermal. B) isometric. C) isobaric. D) isentropic. E) adiabatic.