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Determine the smallest number of whole logs (p = 730 kg/m3, radius = 0.0750 meter, length = 2.91 meter) that can be used to build a raft that will carry four people, each of whom has a mass of 88.0 kilogram?
A small object of mass 1.90×10−2 kg andcharge 3.2 μC hangs from the ceiling by a thread. Asecond small object, with a charge of 4.2 μC isplaced 1.1 m vertically below the first charge. Find theelectric field at the position of the upper charge due..
A laser beam enters a 1.00 cm thick glass block at an angle of 51° from the normal. The index of refraction of the glass is 1.46. At what angle from the normal does the beam travel during the glass?
a projectile is fired with an initial speed of 34.0 ms at an angle of 35.0circ above the horizontal. the object hits
A sled slides without friction down a small, ice-covered hill. If the sled starts from rest at the top of the hill, its speed at the bottom is 9.00 m/s. Evaluate the speed of the sled at the bottom of the hill after the second run
Unpolarized light passes through two polarized sheets. Theaxis of the first is vertical and that of the second is at16degrees to the vertical. What is the fraction of the initiallight that is tranmitted
A stone of mass 3 kg is thrown at an angle of 20o below the horizontal with speed 30m/sec from the edge of a cliff that is 4.0 m high. How far does the stone land horizontally from the bottom of the cliff?
A 124 centimeter long, 5.00 gram string oscillates in its n = 3 mode with a frequency of 160 Hertz and a maximum amplitude of 5.00 mm. Estimate the wavelength in the string
string a is stretched between two clamps separated by distance l. string b with the same linear density and under the
q.water flows over a dam at the rate of 670 and falls vertically 78 before striking the turbine blades.estimate the
A student (m = 63 kilogram) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.0170 second. Evaluate from what height did the student fall
four identical metallic objects carry the following charges 1.19 6.73 -4.26 and -9.98c. the objects are brought
The nucleus of a hydrogen atom is a single proton, which has a radius of about 1.2 × 10-15 m. What is the ratio of the density of the hydrogen nucleus to the density of the complete hydrogen atom
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