Which of the substances, water or mercury, could be used to build a thermometer that measures temperatures from -10°C to 110°C?
1.water only
2.mercury only
3.both water and mercury
4.neither water nor mercury
2
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What is meant by reversible heat transfer?
What will be an ideal response?
A skier is pulled by a tow rope up a frictionless ski slope that makes an angle of 12° with the horizontal. The rope moves parallel to the slope with a constant speed of 1.0 m/s. The force of the rope does 900 J of work on the skier as the skier moves a distance of 8.0 m up the incline.
(a) If the rope moved with a constant speed of 2.0 m/s, how much work would the force of the rope do on the skier as the skier moved a distance of 8.0 m up the incline? At what rate is the force of the rope doing work on the skier when the rope moves with a speed of (b) 1.0 m/s and (c) 2.0 m/s?
State in your own words the relationship between the area of a circle and the radius2 for the same circle. Use the graph plotted in Procedure 3 to help you formulate this answer
In one-dimensional motion, the average speed of an object that moves from one place to another and then back to its original place has which of the following properties?
a. It is positive. c. It is zero. b. It is negative. d. It can be positive, negative, or zero.