(a) Internal human body temperature is often stated to be normal at 98.6°F. What is this temperature on the Celsius and Kelvin scales?
(b) Gallium boils at 2205°C.
What is the corresponding temperature in the Fahrenheit and Kelvin scales?
(c) The boiling point of liquid nitrogen is 77.0 K. What is the corresponding temperature in the Fahrenheit and Celsius scales?
(a) 37.0°C, 310 K (b) 4001°F, 2478 K (c) -321°F, -196°C
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If the frequency of blinks for a light source appears to double as the light source approaches you, the frequency of blinks as it moves away from you at the same speed
A) is halved. B) is doubled. C) stays the same.
Power: Rita raises a 10kg package to a height of 2.5 m in 2.0 s.(a) How much work did she do on the package?(b) How much power was expended on the package?(c) If she were to raise the package in 1.0 s rather than 2.0 s, how do the work and power change?
What will be an ideal response?
At a particular instant, an electron moves eastward in a uniform magnetic field that is directed straight downward. The magnetic force that acts on it is
A) Northward. B) directed upward. C) Westward. D) directed to the South. E) zero.
An auto weighing 3000 newtons has a forward drive force of 1000 newtons. Air resistance on the car is 100 newtons, and road resistance is 100 newtons. The auto moves along a straight level road. The net force on this auto is
A) 200 newtons backward. B) 1000 newtons forward. C) 800 newtons backward. D) 1200 newtons forward. E) 800 newtons forward.