A stone (the system) with a mass of 1.0 kg is tied to the end of a light string which keeps it moving in a circle with a constant speed of 4.0 m/s on a perfectly smooth horizontal tabletop. The radius of the path is 0.60 m
How much work does the force exerted by the string do on the stone as it makes one-half of a complete circle? A) 100 J
B) 3.8 J
C) 0 J
D) 40 J
E) 80 J
C
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A person tries to heat up her bath water by adding 5.0 L of water at 80°C to 60 L of water at 30°C. What is the final temperature of the water?
What will be an ideal response?
Which one of the following lists gives the correct order of the electromagnetic waves from longer wavelength to shorter wavelength?
A) radio waves, infrared, microwaves, ultraviolet, visible, x-rays, gamma rays B) radio waves, ultraviolet, x-rays, microwaves, infrared, visible, gamma rays C) radio waves, microwaves, visible, x-rays, infrared, ultraviolet, gamma rays D) radio waves, microwaves, infrared, visible, ultraviolet, x-rays, gamma rays E) radio waves, infrared, x-rays, microwaves, ultraviolet, visible, gamma rays
How many minutes is 182 days?
A) 1.31 × 105 min B) 2.62 × 105 min C) 7.86 × 107 min D) 1.57 × 107 min E) 127 min
Partially decomposed organic matter in the soil is
What will be an ideal response?