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A weight lifter raises a 1093 N weight a vertical distance of 1.60 m in a time interval of 2.05 s. Compute the power provided by the weight lifter's force.
The same activity is measured for two different isotope samples. One sample contains 0.0450 kg of (atomic mass = 230.033 937 u, t1/2 = 20.8 days). What is the mass of the second sample
Two particles with charges +4e and -7e are initially very far apart, which is the change in the electric potential energy
A rocket has an initial mass of 28,000 kg, of which 20 percent is the payload. It burns fuel at a rate of 185 kg/s and exhausts its gas at a relative speed of 1.8 km/s.
Two particles are fixed along a straight line, separated by a distance 4.2 cm. The left one has a charge +3.0 nC and the right one has a charge of +7.0 nC. What is the location of the point
A light bulb is wired in series with a 131-? resistor, and they are connected across a 120-V source. What are the two possible resistances of the light bulb
A hang glider and its pilot have a total mass equal to 113 kg. While executing a 360° turn, the glider moves in a circle with a 9 m radius. What is the net force on the hang glider
A circular coil of wire 8.40cm in diameter has 16.0 turns and carries a current of 2.60A . The coil is in a region where the magnetic field is 0.580 T, What is this maximum torque in part (A)
A light ray in the core (n = 1.32) of a cylindrical optical fiber (the figure below) travels at an angle ?1 = 45.9° with respect to the axis of the fiber. What angle ?2 does the exiting ray make with the outside surface of the cladding
A Carnot engine performs work at the rate of 380 kW when using 730 kcal of heat per second. If the temperature of the heat source is 560 C, at what temperature is the waste heat exhausted.
How much energy is delivered to the battery. What is the velocity v of the smaller fish before lunch.
Two fun-loving otters are sliding toward each other on a muddy (and hence frictionless) horizontal surface. One of them, of mass 8.00kg, How much mechanical energy dissipates during this play
A uniform magnetic field of magnitude B= 1.2 teslas is directed toward the bottom of the page in the -y direction as shown above. At time t=0, a proton p in field is moving in the plane of the page with a speed v0= 4 x 10^7 meters per second in a ..
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