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Two blocks of masses m1=1 kilogram and m2 = 2 kilogram are connected by a mass less cord passing over a mass less, frictionless pulley. The pulley is pulled up with a force f=50 Newton. Find the accelerations of two masses with respect to ground?
A heart defibrillator is charged to 350V. It is connected to a patients chest and allowed to discharge through the heart. how much charge resides on the capacitor?
A hypodermic syringe has a plunger of area 2.5 cm2 and a 5.0 X10-3 cm2 needle. what is the gauge pressure in the syringe's chamber
On a cold day, a heat pump absorbs heat from the outside air at 14°F (-10°C) and transfers it into a home at a temperature of 86°F (30°C)
An experiment was devised to investigate the effects on the temperature
Two kids are on a merry-go-round. The boy, located 3m from the center of the merry-go-round, is feeling a centripetal acceleration of 2 m/s2. What is her centripetal acceleration
In the figure below, water stands at depth D =30.0 m behind the vertical upstream face of a dam of width W = 320 m. Discover the net horizontal force on the dam from the gauge pressure of the water.
An experiment determines that there are 49 allowed rotational energies for a diatomic molecule whose moment of inertia is 2 x 10^-46 kg*m^2. What is the maximum rotational kinetic energy in eV of the molecule?
A 1.1-kg 20-cm-diameter solid sphere is rotating about itsdiameter at 69 rev/min. What is its kinetic energy? If an additional 5.0 mJ of energy are supplied to therotational energy, what is the new angular speed of the ball (inrev/min)?
A coil of wire with 210 circular turns of radius 3.30 cm is in a uniform magnetic field along the axis of the coil. The coil has R= 42.8 ohm. At what rate, in teslas per second, must the magnetic field be changing to induce a current of 0.155 A in th..
A small telescope has a concave mirror with a 4.00-m radius of curvature for its objective. Its eyepiece is a 4.25-cm focal length lens. What is the angle of its telescopic image?
The angular momentum of a flywheel having a rotational inertia of 0.647 kg·m2 about its central axis decreases from 6.30 to 0.880 kg·m2/s in 3.00 s. How much work is done on the wheel
A) Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat of the metal? B) Which is more useful for storing heat, this metal or an equal weight of water? defin..
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