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Question1
A certain elevator cab in a New York hotel has a total run of 178 m. Its greatest speed is 251 m/min. Its acceleration (both speeding up and slowing down) has a magnitude of 1.14 m/s2.
How long does it take to create the nonstop 178 m run, starting and ending at rest?
Question2
Two stationary positive point charges, charge 1 of magnitude 4.00{rm nC} and charge 2 of magnitude 1.70{rm nC}, are unconnected by a distance of 46.0{rm cm}. An electron is free from rest at the point midway between two charges, and it moves all along the line linking the two charges.
Question3
Two point charges and are held in place 4.50 apart. One more point charge -2.30 of mass 6.00 is at first located 3.00 from each of these charges and free from rest. You study that the initial acceleration of -2.30 is 334 upward, parallel to the line linking the two point charges.
A 3.0 kg mess kit sliding on a frictionless surface explodes into two 1.5 kg parts, one moving at 2.1 m/s, What is the original speed of the mess kit
A sample of animal bone unearthed at an archaeological site is found to hold 173 grams of carbon and the decay rate of 14-C in the sample is measured to be 8.10 Bq. How old is the bone.
A standard 1 kilogram weight is a cylinder 40.0 mm in height and 51.0 mm in diameter. What is the density of the material
A box slides across a frictionless floor with an initial speed v = 2.2 m/s. What is the shortest length of rough floor which will stop the box
A charge 1.1 × 10?5 C is fixed on the x-axis at 7 m, and a charge 8 × 10?6 C is fixed on the y-axis at 5 m. Calculate the magnitude of the resultant electric field ~E at the origin. Answer in units of N/C
Calculate the acceleration of the object for an elapsed time of t=1s. use the formula: x-x0=v0t+1/2at^2 x=4.5 m v0=6.0m/s x0=-3.7m
Evalute the acceleration of each block and the tension in the string? Repeat the problem, adding a coefficient of kinetic friction between each block and the surface of 0.10.
A simple pendulum is made from a L long string and a small ball, mass=m, attached to its free end, Write the lenght of the curve s(t) and specify the time period for small oscillations
Water is pumped into a storage tank from a well delivering 17 gallons of water in 33 seconds throughout a pipe of 1.0 in 0.2 cross-sectional area. What is the average velocity of the water in the pipe as the water is pumped from the well?
A 1350 kg cannon, which fires a 70 kg shell with a speed of 606 m/s relative to the muzzle, At what angle with the ground is the shell projected
A 0.10-kg cart traveling in the positive x direction at 10.0 m/s collides with a 0.30-kg cart at rest. What is the velocity of the 0.10-kg cart
A particular satellite was placed in a circular orbit about 145 mi above Earth. Determine the time required for one complete revolution
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