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A neutron star has a mass of 1030 kg and a radius of 5 kilometers. A body is droped from a height of 20cm above the surface. Determine the speed of the body when it hits the surface.
A balloon is filled with 5.45 liters of helium at a pressure of 1.25 atm and a temperature of 29.5° C. Find the mass of the helium
An electron traveling at 194 m/s enters a1.1 T magnetic field. The angle betweenthe velocity and the field is 30o. Find the radius of the resulting circular path
Two moles of an ideal gas at 200 K occupies a 40 m3 container. What is the pressure of the gas
A diffraction pattern forms when light passes through a single slit. The wavelength of the light is 607 nm. Determine the angle that locates the first dark fringe when the width of the slit is (a) 4.1 x 10-4 m and (b) 4.1 x 10-6 m.
The average intensity of solar radiation incident on the upper atmosphere of the earth is 1390 W/m2. Assuming the sun emits radiation uniformly in all directions, evaluate the total power radiated by the sun.
a cicuit with a 112.0 m aluminum wire, with a diameter of 0.182 mm, what is the potential difference applied to the circuit after the wire is cooled
A person whose mass is 72 kg sits on a piston of a hydraulic lift. The radius of this piston is 0.18 m, What is the mass of a puppy
when a person is given intravenous fluid the bag containing the fluid is typically held about 0.9 m above the persons
A passenger train is travelling at 32 m/s when the engineer sees a freight train 384 m ahead of his train travelling in the same direction on the same track. The freight train is moving at a speed of 5.7 m/s.
How many electrons would have to be removed from one sphere and added to the other to cause an attractive force between the spheres of magnitude 1.00 x 10^4 N (roughly one ton)? Assume that the spheres may be treated as point charges.
The drawing shows two perpendicular, long, straight wires, both of which lie in the plane of the paper. Find the magnitudes of the net magnetic fields at points A and B
Two spheres of mass m1= 3kg and m2= 1.5 kg are given. The lighter sphere is at rest. what is the velocity of each sphere after collision
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