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When I was camping, I needed to bring 300 grams of ice at -15C just to the point of boiling at standard pressure. The ice was in a 200 gram aluminum pan. My stove delivers 850 Watts at 70% efficiency. How long does it take to heat it all up?
Calculate the force acting between two point charges of +10.0μC and -5 μC seperated by a distance of 10.0 cm in a vacuum
A golfer tosses a golf ball straight up into the air and itreturns to his hand 1.5 seconds later. what was the initial velocity of the tossed ball?
Physics - Speed and Direction, Driving along a crowded freeway, you notice that it takes a time t to go from one mile marker to the next.
One end of a brass bar is maintained at 305 oC, while the other end is kept at a constant, but lower, temperature. What is the temperature of the bar at a point 0.129 m from the hot end
A 3.40 kg block starts from rest and slides down a frictionless incline, dropping a vertical distance of 2.60 m, Find the maximum compression of the spring
An isolated charged conducting sphere of radius 12.0 cm creates an electric field of 4.90 104 N/C at a distance 22.0 cm from its center. What is its surface charge density
A toaster uses a heating wire. When the toaster is turned on at 13°C, the initial current is 2.13 A. A few seconds later, thetoaster warms up and the current has a value of 1.59 A. The averagetemperature coefficient of resistivity for this wire is..
the plane of a flat, circular loop of wire is vertical. An external B-field is directed perpendicular to the plane of the loop. What is the direction of the external magnetic field
A plastic rod is rubbed against a wool shirt there by aquiring the charge of -0.80 mC. how many electrons are transfered from the wool shirt to the plastic rod.
A 873 kg dragster, starting from rest, attains a speedof 26.3 m/s in 0.59 s. find the average accerleration of the dragster during thistime interval
The allowed energies of a simple atom are 0.0 {\rm eV},4.0 {\rm eV},and 6.0 .{\rm eV}. What wavelengths appear in the atom's emission spectrum? What wavelengths appear in the atom's absorption spectrum?
During an etiquette class, you walk slowly and steadily at 0.20 {\rm{ m/s}} for 2.5 {\rm m} with a 0.75 {\rm kg} book balanced on top of your head
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