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A rectangular sign over a store has a mass of 140 kg, with the center of mass in the center of the rectangle. The support against the wall at point C may be treated as a ball-and-socket joint. At corner D support is provided in the y-direction only. Calculate the tensions T1 and T2 in the supporting wires, the total forces supported at C, and the lateral force R supported at D. THe force R is positive if it points in the +y-direction, and negative if it points in the -y-direction.
A disk 15 cm in diameter rotates counterclockwise in a horizontal plane, accelerating uniformaly from 33 rpm to 45 rpm in 1 min. What is the angular acceleration of the disk?
A 1.25 meter long wire has a mass of 150 grams. The wire is stretched with a force of 2 Newtons. What is the velocity of a wave over the wire
A neutral atom has electrons completely filling the shells with principal quantum number n = 1, 2, and 3. How many protons does the nucleus contain
Air Bus company Key functional strategies
A 9.60 kg object oscillates at the end of a vertical spring that has a spring constant of 2.00 104 N/m. Calculate the frequency of the dampened oscillation
a 28 kg rifle bullet at an unknown velocity buries itself in a 3.6-kg pendulum hanging on a 2.8-m long string, what was the speed of the bullet prior to impact
The voltage across an air-filled parallel-plate capacitor is mesured to be 200 v. find the dielectric constant of the inserted material
A 1590 kg car starts from rest on a horizontal road and gains a speed of 61 km/h in 30 s (a) what is its kinetic energy at the end of the 30 s.
In NYU's Diffraction and interference lab for general physics 2, what are the widths given on the slide with the double slits. On the lab manual it says they were given on the slide.
A Ferris wheel rotating at 20 rad/s decelerates with a constantangular acceleration for -5.0 rad/s2. How many revolutions does it rotate before coming to rest
A merry-go-round is stationary. A dog is running on the ground just outside its circumference, moving with a constant angular speed of0.695rad/s. After what time will the dog reach the bone
A 3.0-V battery with an internal resistance of 2.5 Ω is connected to a lightbulb of a resistance of 6.0 Ω. How much electric power is delivered to the lightbulb
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