A pot of water is placed on a hot surface which is at 1050C. What kind of heat transfer would you expect?
What will be an ideal response?
Water typically boils at 1000C so that 1050C is only 50C above boiling. The heat
transfer is likely to be natural convection as the water will boil at the bottom
but the bubbles will dissipate and merely return as liquid.
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The force on your left palm is twice than the force on your right palm
Indicate whether the statement is true or false
A large cylindrical water tank is mounted on a platform with its central axis vertical. The water level is 3.75 m above the base of the tank, and base is 6.50 m above the ground. A small hole 2.22 mm in diameter has formed in the base of the tank
Both the hole and the top of the tank are open to the air. We can ignore air resistance and treat water as an ideal fluid with a density of 1000 kg/m3. (a) How many cubic meters of water per second is this tank losing? (b) How fast is the water from the hole moving just as it reaches the ground?
Which one of the following statements is true?
A) Desert landscapes are monotonous, relatively flat areas covered to various depths with sand B) Deserts and dry lands are concentrated in areas of ascending air masses and relatively low atmospheric pressures C) Despite infrequent rainfalls, erosional and depositional features of running water are important in desert landscapes D) Wind is the major cause of erosion in deserts because there is little water but a lot of wind available
In an isochoric process, there is no change in
A) pressure. B) temperature. C) volume. D) internal energy. E) heat.