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A 3m platform of mass of 10kg is supported by a wire attached to its center with an angle of 40 degrees. A 22kg load sits on the platform with it's center 0.50 m from the outer end. Find the tension force in the wire
a star has an apparent magnitude of -1.5 and an absolute magnitude of 1.4 giving it an m-m value of -2.9. if the value
You measure the length of a distant car to be subtended by an angular distance of 1.0 degrees. approximately how far away is the car
You use an elevator to travel from the first floor (h = 0) to the fifteenth floor of a building (h = 45 m). what is the work done by gravity on you
A convex lens is held over a piece of paper outdoors on asunny day. When the paper is held 30 {\rm cm} below the lens, the sunlight is focused on the paper and the paper ignites
a truck is carrying a steel beam of length 17.0m on a freeway. an accident causes the beam to be dumped off the truck
a neutron passes two points 1.0 meter apart in 1.0 microsecond. calculate the neutrons energy in units of both joules j
A 65kg man is riding on a 22kg cart traveling at a speed of3.6 m/s. What is the resulting change in the cart's speed
Diagnostic ultrasound of frequency 3.75 MHz is used to examine tumors in soft tissue. What is the wavelength in air of such a sound wave
Explain the reasons for salient features of the power grid, including the predominant use of alternating current rather than direct current, transmission of power at high voltages(often with bundles of wire rather than single conductors), the use ..
Express your answers using two significant figures. Enter the x and y coordinates of the charge separated by a comma.
The electric field in a particular space is = (x + 1.9) N/C with x in meters. Consider a cylindrical Gaussian surface of radius 22 cm that is coaxial with the x axis. What net charge (in Coulombs) is enclosed within the cylinder
Find the minimum initial speed of a projectile in order for it to reach a height of 1961 km above the surface of the earth
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