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A 56 kg mass is connected to a nail on a frictionless table by a massless string 1.3 m long. There is no appreciable friction between the nail and the string. If the tension in the string is 51 N while the mass moves in a uniform circle on the table, how long does it take for the mass to make one complete revolution?
A 24-V battery is connected in series with a resistor and an inductor, with R = 7.0 ? and L = 2.6 H, respectively. Find the energy stored in the inductor when the current reaches its maximum value
The electric motor of a model train accelerates the train from rest to 0.540 m/s in 31.0 ms. Find the average power delivered to the train during its acceleration
An ideal heat-engine is to be used in an environment where the ambient temperature is 22.50 °C. What must be the minimum temperature of the hot heat reservoir in order to reach at least 46.40 percent efficiency with heat-engine? (Give the answer i..
a 2500 kg truck moving at 10.00 m/s strikes a car waiting at a traffic light, hooking bumpers. what was the mass of the struck car
At t=1.0 second, a 0.46 kilogram object is falling with a speed of 5.5 m/s. Find what is the speed of the object at t=2.0 s
a researcher measures the thickness of a layer of benzene floating on water by shining mono- chromatic light onto the
After flying for 15 min in a wind blowing 42 km/h at an angle of 28° south of east, What is the speed of the airplane relative to the air
If 5.20 moles of a monatomic ideal gas at a temperature of 300 K are expanded isothermally from a volume of 1.11 L to a volume of 3.53 L
A charged particle is injected at 135 m/s into a 0.0713-T uniform magnetic magnetic field perpendicularly to the field. What is the charge-to-mass ratio of this particle
A steel wire with mass 25.5 g and length 1.16 m is strung on a bass so that the distance from the nut to the bridge is 1.10 m, Calculate the wavelength of the string's vibration
A hollow spherical shell has mass 7.90kg and radius 0.210m. What is the kinetic energy of the shell after it has turned through 6.00rev
Three lamps with resistances 1 ?, 2 ? and 3 ? are connected in series in a circuit with a voltage source of 12V. Calculate the voltage drop across each lamp
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