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a window air conditioner consumes 1500 w of electric power and has cop 37 if it runs continuously for 18h how much
find the maximum temperature in a carnot cycle operating in a room-temperature 23 degrees c environment if its carnot
steel rails 250m long are laid end to end with gaps between them to account for thermal expansion part a if the track
suppose you have a spherical balloon filled with air at room temperature and 10 atm pressure its radius is 12cm you
egg incubation is an important determinant of the sex of many reptiles in a study of loggerhead turtles 100 of the
a hairless cats body temperature is 75 degrees c higher than a humans part a find the hairless cats temperature in
for this problem compute the expected sea level rise for the projected 4degc mean global temperature rise anticipated
the protein -lactalbumin molecular weight 14000 has been studied under different solution conditions by dynamic light
calculate the moment of inertia of each of the following uniform objects about the axes indicated consult table moments
a box 4kg being transported in the back of a truck that is accelerating forward at 2 the box does not slide relative
a balloon contains 063 mol of helium it rises in maintaining a constant 280 k temperature to an altitude where its
a block with mass 500 slides down a surface inclined 369 to the horizontal the figure figure 1 the coefficient of
a 420-cm diameter wheel consisting of a rim and six spokes is constructed from a thin rigid plastic material having a
a frictionless pulley has the shape of a uniform solid disk of mass 600 and radius 280 a 270stone is attached to a
a thin light wire is wrapped around the rim of a wheel as shown in the following figure the wheel rotates without
the angular velocity of a flywheel obeys the equation where is in seconds and and are constants having numerical
a faulty model rocket moves in the xy-plane the positive y-direction is vertically upward the rockets acceleration has
direction of velocity at various times in flight for projectile motion conceptual question for each of the motions
a small rock is thrown vertically upward with a speed of 120 from the edge of the roof of a 360 tall building the rock
after driving a portion of the route the taptap is fully loaded with a total of 23 people including the driver with an
communications satellites are placed in orbits so that they always remain above the same point of the earths surface a
there is evidence that elephants communicate via infrasound generating rumbling vocalizations as low as 14 hz that can
a space probe is traveling in outer space with a momentum that has a magnitude of 75 x 107 kgms a retrorocket is fired
the area of a typical eardrum is about 50 times 105 m2 a calculate the sound power the energy per second incident on an