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An explorer is caught in a whiteout (in which the snowfall is so thick that the ground cannot be distinguished from the sky) while returning to base camp. He was supposed to travel due north for 5.4 km, but when the snow clears, he discovers that he actually traveled 8.3 km at 45o north of due east. (a) How far and (b) in what direction (south of due west) must he now travel to reach base camp?
a 2 kg object attached to a horizontal string moves with constant speed in a circle on a frictionless horizontal surface. Find the radius of the circle
The rectangular gate CD shown in the figure is 1.8 m wide and 2 long. Assuming the material of the gate to be homogeneous and neglecting friction at the hinge C, determine weight of the gate necessary to keep it shut until the water level rises to..
A 10.64 kilogram bowling ball at 0°C is dropped into a tub containing a mixture of water and ice. Determine from what height was the ball dropped
A moon orbits a planet of unknown mass with a period of 1.8 days. If the radius of the moon's orbit is 420,000,000 meters, find the mass of the planet. Determine the centripetal acceleration of the moon
an object has a volume of 3.29 m3 and a mass of 3000 kg. do you expect the object to sink or float in water? if the
a simple pendulum has a period t2.93218 s in a location where g 9.80000 ms2. a what is its length m?b what would be
A bead of mass m, acted upon by a uniform graviational force,can slide freely on a frictionless circular hoop of radius R. Determine the Langrangian for the bead
A container holds 1.4 mol of gas. The total average kinetic energy of the gas molecules in the container is equal to the kinetic energy of a 8.2x10-3 kg bullet with a speed of 780 m/s
A 4.60 g charcoal sample from anancient fire pit has a 14C activity of 63.0disintegrations/min. How old is the charcoal sample
A steady current of 1.5 A flows through a 3600 ohm resistor for 2 seconds. How many charges are flowing at any point in the wire during the 2 seconds
In a Compton scattering experiment, an x-ray photon scatters through an angle of 18.0° from a free electron that is initially at rest. Calculate the angle through which the electron scatters
A hanging iron wire with diameter 0.15 cm is initially 2.4 m long. When a 184 kg mass is hung from it, Find the approximate value of the effective spring stiffness of the interatomic force
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