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A concave makeup mirror is designed so that aperson 23 cm in front of it seesan upright image magnified by a factor of two. What is the radius of curvature of the mirror in meters?
To explain why he seems to hang in the air, compute the ratio of the time he is above ymax/2 moving up to the time it takes him to go from the floor to that height. You may ignore air resistance.
We vaporize 5kg of water at 100c. The latent heat of vaporize of water is 2.26x10^6J/kg, find the value of the water's temperature in kelvins
A 70.0 kg person balances a 1250 kg elephant which is standing on a circular lift of diameter 2.00 m. What is the diameter of the piston
A block has an initial speed V(o) > 0 on a linear trajectory on the surface with friction coefficient u and air resistance (F = cv^2). Derive an equation that will represent the velocity (V) as a function of the position of the block (x). So V(x).
a laser emits at 424nm in a single pulse that lasts .500 x10-6s. the power of the pulse is 2.80 mw. if we assume that
Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. How much power is radiated from each panel
A solid spherical ball of mass 3.36 kg and radius 0.08 m rolls along a smooth, level surface with a speed of 2 m/s. What is the ball's rotational kinetic energy
A uniform disk of mass 10 kg and radius 3.0 m can rotate without friction about its fixed center like a merry-go-round. What is the angular velocity of the two disks together about the center of the large disk after the small disk have moved
To tighten a spark plug, it is recommended that a torque of 15.6 N·m be applied. If a mechanic tightens the spark plug with a wrench that is 24.2 cm long, what is the minimum force necessary to create the desired torque?
A battery is connected in series with a 0.31-? resistor and an inductor, Find the inductance of the circuit
A 27 g ice cube at its melting point is dropped into an insulated container of liquid nitrogen, how much nitrogen evaporates if it is at its boiling point of 77 K and has a latent heat of vaporization of 200 kJ/kg?
A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. What is the person's mass
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