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Q1. A street lamp weight 164N. It is supported equally by two wires that form an angle of 129 degrees with each other. What is the tension of each of these wires?
If the angle of each of these wires is reduced to 79 degrees, what new force does each wire exert?
Q2. A 95 kg spacewalking astronaut pushes off a 625 kg satellite; exerting a 87 N force for the 0.440 s it takes him to straighten his arms.
How far apart are the astronaut and the satellite after 1.30 minute?
A house has a floor area of 162.0 m2 and an outside wall that has an area of 40.50 m2. The earth's magnetic field here has a horizontal component of 2.550E-5 T, Determine the magnetic flux through the wall if the wall faces north
Laura buys a standard Lapple reverse-flow cyclone that has an outer diameter (D2) of 1.0 ft (0.3048 m). The volume flow rate of dusty air entering the cyclone is 0.260 m3 /s.
The energy momentum relationship for the conduction band of a 3D semiconductor is: E= (h bar)^2/2m*[k(x)^2/2+k(y)^2+k(z)^2]
Suppose the region outside the chamber is evacuated and the total mass of the block and the movable piston is150 kg. What is the distance s through which the piston rises
A rotating wheel requires 3.03-s to rotate through 37.0 revolutions. Its angular speed at the end of the 3.03-s interval is 99.0 rad/s
Estimate the particle density necessary for bose-Einstein condensation of a hydrogen gas to occur at 100 nK. find the ratio of the thermal wavelength to the atom spacing
Young's double slit experiment arrives at a point on the screen one-half wavelength behind the wave from the other slit, which is observed at that point?
Calculate the acceptance cone angle for a fiber optic cable that has an index of 1.70 for the fiber core and a 1.47 index for the cladding. What is the acceptance cone angle
A pipe open at both ends has a fundamental frequency of 120 Hz. what is the fundamental frequency of this pipe
An object is placed 40cm in front of a concave mirror whose radius of curvature is 30am. Determine the location of the image and the magnification
A wheel has eight spokes and a radius of 33.0 . It is mounted on a fixed axle and is spinning at 2.80 . You want to shoot a 38.0 long arrow through the wheel, parallel to this axle, without hitting any of the spokes. Assume that the arrow and the ..
Two wires of the same cross-sectional area and length, but made of different materials, are connected in series. what is the resistivity of the other material
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