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A dedicated sports car enthusiast polishes the inside andoutside surfaces of a hubcap that is a section of a sphere. When heholds the hubcap a certain distance away from his face, he sees animage of his face 30.1 cm in back of the hubcap. He then turns thehubcap over, keeping it the same distance from his face. He nowsees an image of his face 10.7 cm in back of the hubcap.
How far is his face from the hubcap?What is the radius of curvature of the hubcap?
If it takes 9.19e5 J of heat to bring 0.30 kg of ice at -17*C to water vapor at 108*C, what is the specific heat of the water vapor
A 1 115.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 8 200.0 kg truck moving in the same direction at 20.000 m/s. What is the velocity of the truck right after the collision
A 1960 kg weather rocket is launched straight up. The rocket motor provides a constant acceleration for 22.03 s, then the motor stops. The rocket altitude 26.3 s after launch is 6641. You can ignore any effects of air resistance.
A jetliner is moving at a speed of 189 m/s. The vertical component of the plane's velocity is 37.6 m/s. Determine the magnitude of the horizontal component of the plane's velocity.
A solenoid of length 6.3 cm and diameter 0.88 cm is wound with 178 turns per cm. The current is decreasing at a rate of 38.0 A/s. What is the induced emf in one of the windings
An iron anchor of density 7870 kg/m^3 appears 200 N lighter in water than in air. What is the volume of the anchor
An isolated conductor of arbitrary shape has a net charge of +1.20×10-5 C. Inside the conductor is a cavity within which is a point charge q = +3.60×10-6 C. What is the charge on the cavity wall?
A rocket rises vertically, from rest, with an acceleration of3.2 m/s2 until it runs outof fuel at an altitude of 1000 m. How long does it take to reach this point
a 1.2-m-long steel rod with a diameter of 0.50 cm hangs vertically from the ceiling. By how much does the rod stretch
the inside and outside temperature of a carnot refrigerator are 10*C and 25*C, respectively. find the work required in each cycle
A cylindrical capacitor is 0.047 m long and has a cylindrical core with a radius of 0.025 mm and a cylindrical metal sheath with a radius of 0.084 mm. how much energy is stored in the capacitor in picojoules
The speed of light in a transparent medium (such as glass) is less than the speed of light in a vacuum. Is this a violation of the theory of relativity.
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