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Suppose one gallon of gasoline produces 1.1 x 10^8 J of energy, and this energy is sufficient to operate a car for twenty miles. If a 258 mg drop of gasoline could be converted completely into thermal energy, how many miles could the car go with that energy?
Old naval ships fired 13 kg cannon balls from a 210 kg cannon. It was very important to stop the recoil of the cannon, since otherwise the heavy cannon would go careening across the deck of the ship.
Compute the average linear velocity of the discus
A potential difference of 13 V is found to produce a current of 0.45 A in a 2.7 m length of wire, Find the resistance and resistivity of the wire
An object is placed in front of a convex mirror with a 22.6-cm radius of curvature. A virtual image half the size of the object is formed. At what distance is the object from the mirror
In one design, a large spring with spring constant 2×10^4 N/m was placed behind the cannon. The other end of the spring braced against a post that was firmly anchored to ship's frame.
A light beam containing red and violet wavelengths is incident on a slab of quartz at an angle of incidence of 65.3°. Find the dispersion of the slab
You sing into a well and find that the well resonates at frequencies of 231 Hz and 273 Hz with no resonances between these two frequencies. What is the frequency of the fundamental mode
A surfer is zipping northeast across the river with a velocity of 10 m/s relative to the water. what is the true velocity of the surfer
Two charged bodies exert the force of 0.185N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
A capacitor in a single-loop RC circuit is charged to 57% of its final voltage in 1.3s, Find the percentage of the circuit's final voltage after 4.3s
An electron of kinetic energy 1.56 keV circles in a plane perpendicular to a uniform magnetic field. The orbit radius is 21.8 cm. determine the circling frequency
Two identical spools are held at the same heights above the floor. The thread from the spool A is tied to an overhead support while spool B is not connected to the support. which spool will hit the floor first
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