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50.0 mL of water at 10.0 ºC is placed in the freezer compartment of a refrigerator by a coefficient of performance of 6.00. How much heat energy is exhausted into the room as the water is changed to ice at -15.0 ºC?
A wire carries a current of 0.97 A . This wire makes an angleof 64 degree with respect to the magnetic field of magnitude3.8*10-5T. What is the lenght of the wire
A string trimmer is a tool for cutting grass and weeds; it utilizes a length of nylon "string" that rotates about an axis perpendicular to one end of the string. what is the length of the rotating string
A size-5 soccer ball of diameter 22.6cm and mass 426g rolls up a hill without slipping, reaching a maximum height of 6.50m above the base of the hill. At what rate was it rotating at the base of the hill
A 4.0 kg ball is located at x= 4.0m, y= 0m. A 6.0 kg ball is located at x= 2.0m, y= 4.0m, and a 3.0 kg ball s located at x= -1.0m, y= -2.0m. obtain the location of the center of the mass of this system
Consider a car undergoing these two displacements: D1 (3 km, 4 km) and D2 (4km, -3 km). how far will the car then be from its starting point
Your boss at the Cut-Rate Cuckoo Clock Company asks you whatwould happen to the frequency of the angular SHM of the balancewheel if it had the same density and the same coil spring, By what factor would the frequency change
Which state is best illustrates kinetic friction
The internal energy of a system increases by 100 J while 800 J of work are performed on it. What was the heat flow into or out of the system
What is the potential energy of an electron that is 59.0 cm from a charge of 33.5 nC, How much work is required to move the electron very far from the charge
Two narrow slits separated by 0.51 mm are illuminated by monochromatic light of wavelength 670 nm. How many bright fringes can be seen on a screen 1.3 cm wide placed 1.1 m in front of the slits.
A 70 cm long, 0.8 mm diameter steel guitar string must be tightened to a tension of 2000 N by turning the tuning screws. By how much is the string stretched
In fair weather, over flat ground, there may be a downward electric field of 155 N/C. Calculate the charge density of the air
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