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When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, with a radius of about 11 km (about the size of a typical city). If a neutron star rotates once every 0.45 seconds,
(a) what is the speed of a particle (in km/s) on the star's equator and
(b) what is the magnitude of the particle's centripetal acceleration?
A constant torque of 260 N-m acts on a flywheel. If the flywheel makes 25 complete revolutions, how much work has been done by the torque on the flywheel
What is the linear charge density together the arc.
Two mirrors meet at a 127° angle. If light rays strike one mirror at 40° as shown, at what angle ? do they leave the second mirror.
a system of 1435 particles, each of which is either an electron or a proton , has a net charge of -7.216x10^-17, how many electrons are in this sytem
A rectangular plate has a length of (20.4 0.2) cm and a width of (8.7 0.1) cm. Calculate the area of the plate
On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg, What is the total kinetic energy of the two blocks after the collision
A potential difference is applied between the electrodes in a gas discharge tube. In 1.7 s, 3.2 1016 electrons, What is the current in the tube
Write a general expression of the flux
Find the magnitude of the electron acceleration. Under an influence of its drive force, a snowmobile is moving at a constant velocity along a horizontal patch of snow. When the drive force is shut off, the snowmobile coasts to a halt.
The isotope, tritium, has a half-life of 12.3 years. Assume we have 12 kg of the substance. How much tritium will be left after 26years? State your answer in kg ( two decimal places)
A quantity of an ideal gas is contained in a balloon. Initially the gas temperature is 27°C, What is the new temperature of the gas
The gearshift lever AB for the transmission of a sports car has position vector r whose line of action passes through points A and B. The driver applies the force F to the knob B of the lever to shift gears. Find out the magnitude of the component..
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