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If 100 physics students each give off 100 W as they sit in the classroom taking an exam, estimate the temperature increase of the room during the hour-long test. Assume that 1% of the heat goes into raising the air temperature.
Where is center of mass of the system
A parallel plate air filled capacitor having area 40cm^2 and plate spacing 1.0mm is charged to a potential difference of 600V. find the energy density between the plates
A current is flowing through a circuit and you open a switch. Why might a spark jump across the switch opening? Explain what is happening? What property of the circuit would be relevant to this phenomenon?
A 25-g lead bullet is shot with a speed of 240 m/s into a wooden wall. what is the final temperature of the bullet
How much work is completed in charging the capacitor
A sports car crosses the bottom of a valley with a radius of curvature equal to 80 {rm m}. At the very bottom, the normal force on the driver is twice his weight. Evaluate at what speed is the car traveling?
A 12.0 m long conveyor belt, inclined at 40.0°, is used to transport bundles of newspapers from the mailroom up to the cargo bay to be loaded on to delivery trucks. Each newspaper has the mass of 1.00 kg, and there are 26 newspapers per bundle. Concl..
As we discussed in class, most of the refraction in your eye happens at the surface of your cornea (n = 1.376). Use this idea to explain why wearing a swimming mask or goggles helps us to see more clearly underwater. Include a diagram in your expla..
The only force acting on a 2.1 kg canister that is moving in an xy plane has a magnitude of 5.4 N. How much work is done on the canister by the 5.4 N force during this time
How much water must be displaced to float a cubical block of wood (density 655 kg/m^3) that is 15.0 cm on a side
In a game of pool, a cue ball with an initial velocity of 1.25 m/s directed to the right (along the +x-axis) collides with the five ball, Find the cue ball's final velocity
The masses of the earth and moon are 5.98 × 1024 and 7.35 × 1022 kg, respectively. What is the magnitude of the charge placed on each body
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