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At the sun's surface, the gravitational force between the sunand a 5.00 kg mass of hot gas has a magnitude of 1370 N. Assumingthat the sun is spherical, what is the sun's mean radius?
A robber's getaway vehicle, which can travel at 0.8c, is pursued by a cop. whose vehicle can travel at 0.4c. Realizing that he cannot catch up with the robber, the cop tries to shoot him with bullets that travel at 0.5c (relative to the cop). Can the..
space vehicles traveling through earths radiation belts can intercept a significant number of electrons. the resulting
A "biconvex" lens is one in which both surfaces of the lens bulge outwards. What is the focal length f of this lens in air
A ball on a porch rolls 60cm to the porch's edge, drops 40cm, continues rolling on the grass, and eventually stops 80cm from the porch's edge. What is the magnitude of ball's total displacement, in centimeters.
A very long straight wire carries current 44 A. In the middle of the wire a right-angle bend is made. Determine the magnetic field at the center of the arc
If the wire is heated to 38.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire
A floating ice block is pushed through a displacement vector d= (15 m)i - (12 m)j along a straight embankment by rushing water, How much work does the force do on the block during the displacement
An electron with a speed of 3.55·E5 m/s enters a uniform mangetic field of magnitude 0.0397 T at an angle of 34.5° to the magnetic field lines, Determine the radius of the helical path
An electron in the hydrogen atom is in an excited state given by (n=4, l=3, ml=2, ms=1/2). List the possible final states the system could be in after the emission of photon. Include in the list the energies of the photon.
A spring is extended by 30mm when a force of 1.5 N is applied toit. if the spring was unstretchedbefore applying the mas calculate the loss in the potential energyof the mass
An old wooden tool is found to contain only 18% of 146C that a sample of fresh wood would. How old is the tool
A submarine sends a sonar signal, which returns from another ship 2.250 s later. How far away is the other ship if the speed of sound in seawater is 1,530.0 m/s
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