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An air-conditioning unit with a coefficient of performance of 2.93 provides 5,275 kJ h-1 of cooling while operating during the cooling season 8 hours per day for 125 days. If you pay 10 cents per kWh for electricity, determine the cost, in dollars, for the cooling season.
Freud believed that certain troubling symptoms might be traced to painful unconscious memories. This led him to suspect that these symptoms resulted from.
A street lamp weighs 160 Newton. It is supported by two wires that form an angle of 100 degree with each other. Evaluate the tension in each wire supporting the street lamp
An air-traffic controller observes two airplane on his radar screen. The first is at altitude 850 meter, horizontal distance 19.8 kilometer and 24.0 degree south of west. Calculate the distance between the two airplane
A car stops suddenly during a head-on collision, causing the driver's brain to slam into the skull. The resulting injury would most likely be to which part of the brain?
A 0.540 m long solenoid is formed by wrapping 790 turns of wire around a hollow cylinder with a radius of 0.270 m. calculate the energy stored in the field
During a physics experiment, helium gas is cooled to a temperature of 20.0 K at a pressure of 0.150 atm, What are the mean free path in the gas
A 1.50-kg iron horseshoe initially at 670°C is dropped into a bucket containing 23.0 kg of water at 24.0°C. What is the final temperature of the water-horseshoe system
Two forces act on a 6.5 kg object sitting on friction-less horizontal surface and force is 25N in the(+) x-direction and the other is 35N in the (-)x-direction. What is the accelertation of the object
A 600 grams model rocket is on a cart that is rolling to the right at a speed of 3 meter per second. Find at what horizontal distance left of the loop should you launch
What is the direction of the net force on q3? (c) where along the x axis can q3 be placed and the net force on the zero, other than the trivial answers of x= +infinity and x= -infinity
The tub of a washer goes into its spin-dry cycle, starting from rest and reaching an angular speed of 2.0 rev/s in 8.0 s. Through how many revolutions does the tub turn during this 21-s interval
A ball is thrown vertically upward with a speed of 19.6 m/s. What is the ball's velocity after 1.00s
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