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Given that the Moon period about the Earth is 27.32 days andthe distance from the Earth to the Moon is 3.84 x 10^8 m, estimate the mass of the Earth. Assume the orbit is circular. why do yousuppose yur estimate is high.
A metal ball with a mass of 3.81·10-6 kg and a charge of +5.21 mC has a kinetic energy of 4.77·108 J. how close will it come to the plane before stopping
A step down transformer is designed to have an output voltage of 19.5 V when the primary is connected to the 120 V. how many turns are in the secondary
A 62.3-kg skateboarder starts out with a speed of 2.22 m/s. He does 108 J of work on himself by pushing with his feet against the ground. How much has the vertical height of the skater changed
A coaxial cable has a capacitance of 3.0 pF. The inner conductor has a radius of 1.0 mm, Find the length of the cable
a block of mass m=2.00kg is attached to the end of an ideal spring and its initially hanging motionless. with what angular frequency will the block oscillate
A plane flies 500 km east from city A to city B in 45.0 min and then 930 km south from city B to city C in 1.50 h. In magnitude-angle notation, what is the plane's displacement for the total trip
The weight of passengers on a roller coaster increases by 52% as the car goes through a dip with a 35m radius of curvature. What is the car's speed at the bottom of the dip
Find the threshold energy that an incident neutron must have when striking an alpha particle to produce a deuterium and tritium nucleus
A mass spectrometer applies a voltage of 2 kV to accelerate a singly charged positive ion. A magnetic field of B = 0.400 T then bends the ion into a circular path of radius 0.305m. What is the mass of the ion.
The side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the mirror. If the height of the car is 1.6 m, how tall is the image
A 250MW laser pulse is focused with a lens to a diameter of 2.5?m. What is the laser beam's electric field amplitude at the focal point
A ball of radius 37 cm is rolling down an inclined plane with no slipping. What is the balls angular acceleration at the bottom of the inclined plane
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