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A scaffold of mass 61 kg and length 6.5 m is supported in a horizontal position by a vertical cable at each end. A window washer of mass 79 kg stands at a point 1.2 m from one end.
a 3.000 u 1 u 931.5 mevc2 object moving to the right through a laboratory at 0.8c collides with a 4.000 u object
A mass of 6 kg is moving at 31 m/s in the positive x direction. What is the magnitude of the velocity of the masses after the collision in m/s
A Van de Graaff generator has a spherical dome of radius 25 cm. Operating in dry air, where "atmospheric breakdown" is at Emax = 3.0 · 106 N/C, obtain the maximum charge that can be held on the dome
Water moves through a constricted pipe in steady, ideal flow. At the lower point the pressure is 1.73 105 Pa and the pipe radius is 3.00 cm. Find the volume flow rate through the pipe
an infinite line charge of uniform linear charge density -1.1 cm lies parallel to the y axis at x -1 m. a point
During a particular thunderstorm, the electric potential difference between a cloud and the ground is Vcloud - Vground = 4.10 108 V, What is the change in an electron's electric potential energy
two dry-ice pucks covered with plasticine are on a collisioncourse; one of the mass 467g travles south at a speed of 2.6m/s. calculate their speedand direction of travle
A hollow, spherical shell with mass 2.40 kg rolls without slipping down a slope angled at 39.0 degrees. Find the friction force
the mean is 652.0527 and the standard deviation is 1063.7702. the number of counts is 10241.estimate the probability
A somewhat longer cable replaces the old and is attached to the steel bar 5 m from its upper end, connecting to the same place on the wall as before and maintaining the same angle between the bar and the wall.
A neutral sodium atom has an ionization potential of X=5.1eV. Sodium has mass number A=23. What is the minimum speed of a free electron that can ionize a sodium atom in the ground state?
The index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), whereas its index of refraction is 1.530 at a wavelength of 410 nm (violet), what is the angle of refraction for each wavelength
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