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You are asked to hang a uniform beam and sign using a cable that has a breaking strength of 441 N. The store owner desires that it hang out over the sidewalk as shown. The sign has a weight of 199 N and the beam's weight is 53 N. The beam's length is 1.30 m and the sign's dimensions are 1.00 m horizontally 0.80 m vertically. What is the minimum angle that you can have between the beam and cable?
In a diffraction experiment, light of 600nm wavelengthproduces a first-order maximum 0.350 mm from the central maximum ona distant screen. obtain the wavelength of the light from the second source
A plane leaves the airport in Galisto and flies 170 km 68 degrees east of north and after that changes direction to fly 230 km at 48 degrees south of east, after that it makes an immediate emergency landing in a pasture. When airport sends out a r..
A physicist uses a cylindrical metal can 0.300m high and 0.070m in diameter to store liquid helium at 4.22 K; at that temperature the heat of vaporization of helium is 2.09×104J/kg. How much helium is lost per hour
A diffraction grating produces a first order bright fringe that is 0.226 m away from the central bright fringe on a flat screen which is 0.675 m away. What is the wavelength of the light shining on the grating
Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 29.2 m. Assume the density of the water is 1.00 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa (b) What force is exerted by the water on the window of an..
Find the electric field of a rod with length (L), total charge (Q), and distance (r) from the center of the rod along the axis of the rod when r > L/2
The potential energy of a +1 10-6 C charge decreases from 0.06 J to 0.02 J when it is moved from point A to point B. What is the change in electric potential between these two points
An electron in a television picture tube has a classical kinetic energy of 60 keV, which is the kinetic energy that Newton would calculate using the measured speed, What is the actual kinetic energy of the electron
A jet plane is flying with a constant speed along a straight line, at an angle of 30.0? above the horizontal. The plane has a weight W? of magnitude 86,500N, What is the magnitude of the thrust force
If its length is 49.8 m when measured from inside the spacecraft, what is its length measured by a ground observer
An 854 kg (1887 lb) dragster, starting from rest, attains a speed of 27.1 m/s (60.7 mph) in 0.59 s.
An underwater diver sees the sun 50 degrees above horizontal. How high is the sun above the horizon to a fisherman in a boat above the driver.
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