What is the radius of a sphere that has a density of 5000 kg/m3 and a mass of 6.00 kg?
A) 6.59 cm B) 7.22 cm C) 1.27 cm D) 1.56 cm E) 4.98 cm
A
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Dust particles are pulverized rock, which has density 2500 kg/m3. They are approximately spheres 20 ?m in diameter
Treating dust as an ideal gas, what is the root-mean-square speed (thermal speed) of a dust particle at (The Boltzmann constant is 1.38 × 10-23 J/K.) A) 5.2 × 10-5 m/s B) 1.7 × 10-5 m/s C) 3.0 × 10-5 m/s D) 7.3 × 10-5 m/s
A ball hangs at rest from a string attached to the ceiling. The string pulls up on the ball with a force equal to its weight. The reaction to the upward force of the string on the ball is a ________ (direction) force exerted by the ________ on the ________.
What will be an ideal response?
A person looks straight down into a large cube of glass. Three cm below the surface is a bubble. How far below the surface does the bubble appear to the person?
What will be an ideal response?
If the temperature changes by 36
then what is the change in temperature in Celsius?
A. 40
B. 32
C. 26
D. 20
E. 15