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A doubly charged ion with velocity 6.9 × 106 m/s moves in a path of radius30 cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion?
A hot-air balloon has just lifted off and is rising at the fix rate of 2.0m/s. suddenly one of the passengers realizes she has left her camera on the floor. compute how high is she when the camera reaches her
An object with a charge of -2.6 \mu C and a mass of1.7×10−2 kg experiences an upward electric force, due to a uniform electric field, equal in magnitude to itsweight.
The focal length of a simple magnifier is 7.00 cm. Suppose the magnifier to be a thin lens placed very close to the eye. How far in front of the magnifier must an object be placed if the image is formed at the observer's near point, 25.0 cm in front ..
A plane accelerates from rest at a constant rate of 5.00 along a runway that is 1800 long. What is the time needed to take off
A firehouse shoots water at a speed of 50 m/s from a ground level at an angle of 60 above the horizontal. how far above the ground does it hit the building
A sealed tube (0.5 L) in volume confines two moles of an ideal gas at a pressure of 2 atm. What is the average kinetic energy of a gas molecule
A 3-m2 hot black surface at 80°C is losing heat to the surrounding air at 25°C by convection with a convection heat transfer coefficient of 12 W/m2.°C, Determine the total rate of heat loss from the surface
the best rebounders in basketball have a vertical leap that is the vertical movement of a fixed point on their body of
In a colliding-beam experiment, particles traveling at 0.85crelative to the laboratory met in a head-on collision by other particles traveling in the opposite direction at 0.92c relative to the lab. What is the relative speed of approach of the parti..
A 60.0 g bullet is fired from a muzzle velocity of 525 m/s from a gun with mass 4.50 kg and a barrel length of 55.0 cm, Find the bullet's momentum as it leaves the barrel
A thin steel beam 8.0 m long is suspended from a crane and is undergoing torsional oscillations. Two 80 kg steelworkers leap on to opposite ends of the beam, as shown in Fig. 13.29. If the frequency of torsional oscillations diminishes by 15%, what i..
The deepest point in the ocean is in the Mariana Trench, about 11 km deep, in the Pacific. The density of seawater at the surface is 1.03 X 10^3 kg/m^3. Find its density at the bottom
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