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A 25 g glass tumbler contains 410 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.
Does current through a power supply increase when parallel bulbs are added? what is the current through the power source
King Arthur's knights fire cannon from the top of the castle wall. The cannonball is fired at a speed of 60 m/s and an angle of 33. A cannonball that was accidentally dropped from the top of the castle wall hit the moat below in 1.80s.
Consider a neutron star whose mass is twice the mass of the Sun and whose radius is 14.1 km. What is the radius of the geostationary orbit for this neutron star
Vertically polarized light with an intensity of .60 W/m^2 passes through a polarizer whose transmission axis is at an angle of 35 degrees with the vertical
An electromagnetic plane wave at a certain location has an electric field pointed up which is given as a function of time as E = 54 V/m × sin (6x106 Hz × t). how much energy does the foil absorb
If a car travelling at 30m/s will skid 18.00 m when its brakes lock and the car slides, how far would it skid if it is travelling at 40 m/s when its brakes lock? (This question is typical on some driver's license exams. Note: 10 m/s = 22 mph)
A string of length L, which is clamped at both ends and has a tension T, is pulled aside a distance h at its center and released
A long straight wire is aligned north-south and carries current in the northerly direction. What is the direction of the magnetic field created directly above the wire
You measure an electric field of 1.32*10^6 N/C at a distance of 0.156m from a point charge. What is the magnitude of the charge
A Girl is pushing on a 45 kg dresser with 300 N of force. The dresser has a coeficient of statice friction of 0.83, How much is the force of friction on the dresser
A Venturi meter measures fluid speed in a pipe. A constriction (of cross-sectional area A2) is put in a pipe of normal cross-sectional area A1 (A1 = 2A2). Find the ratio of the flow speeds
q1. suppose we had a rubber ball like the ones used for racquetball and put it inside a container with liquid nitrogen.
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