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A 25 g glass tumbler contains 340 mL of water at 24°C. If four 20 g ice cubes each at a temperature of -3°C are dropped into the tumbler, what is the final temperature of the drink? Neglect thermal conduction between the tumbler and the room.
A total charge Q = 2.7 mC is distributed uniformly over a quarter circle arc of radius a=9.3 cm, What is lamda the linear charge density along the arc
The current in a series circuit is 14.9 A. When an additional 10.6-? resistor is inserted in series, the current drops to 9.47 A. What is the resistance in the original circuit
A thermos contains 170 cm3 of coffee at 85° C. To cool the coffee, you drop two 14-g ice cubes into the thermos. What is the final temperature of the coffee
A He-Ne laser produces light of wavelength 633 nm with intensity 1.09 103 W/m2, over a beam of cross-sectional area 1.04 mm2. How many photons per second are emitted by the laser
Our Sun has a radius of 7 x 10^8 meters. From the amount of thermal energy we receive on Earth, determine the average surface temperature of the Sun
Two identical closely spaced circular disks form a parallel-plate capacitor. What are the diameters of the disks
The function y(x, t) = (25.0 cm) cos(?x - 20?t), with x in meters and t in seconds, describes a wave on a taut string. What is the transverse speed for a point on the string at an instant when that point has the displacement y = +22.0 cm?
After a 0.805 nm x-ray photon scatters from a free electron, the electron recoils with a speed equal to 1.32E+6 m/s. find the Compton shift in the photon's wavelength
At what angle must the cannon be fired
With two resistors of resistances of 16(ohms) and 24(ohms) are connected in parallel. Find the equivalent resistance of the network, and the current in each resistor
Calculate the ratio of the drag force on a jet flying at 1140 km/h at an altitude of 10 km to the drag force on a prop-driven transport flying at half that speed and altitude.
A body travels a distance of 3km towards east and 4 km towards north and finally 9 km towards east. what is the total distance travelled and displacement of body.
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