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A long solid cylinder(R = 0.8 m) hinged at point A is used as an automatic gate. When the water level reaches 5 m, the gate opens by turning about the hinge at point A.
(a) Determine the hydrostatic force acting on the cylinder and its line of action when the gate opens.
(b) Determine the weight of the cylinder per m length of the cylinder. (density of water = 1000 kg/m3 and g = 9.81 m/s2)
Find the power factor for an RC circuit connected to a 80.0Hz generator with an rms voltage of 155V
A 2.04 kg particle has a velocity (2.09i - 2.98j) m/s, and a 2.91 kg particle has a velocity (0.92i + 5.98j) m/s. Find the velocity of the center of mass
A 1 170.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 800.0 kg truck moving in the same direction at 20.000 m/s. What is the change in mechanical energy of the car-truck system
A nonconducting solid sphere of radius 8.40 cm has a uniform volume charge density. The magnitude of the electric field at 16.8 cm from the sphere's center is 2.21 103 N/C.
In a classic carnival ride, patrons stand against the wall in a cylindrically shaped room. Once the room gets spinning fast enough, the floor drops from the bottom of the room! What is the speed of a person "stuck" to the wall
A small electric car overcomes a 250 N friction force when traveling 30 km/h. How much power is dissipated in the coils
How much time does the stone take to reach the ground.
In a double slit experiment the separation among the slits is 0.15mm, the distance between the slits and the screen is 140 cm, the wavelength of the light utilized is 643 nm.
A power plant taps steam superheated with geothermal energy to 540 K (the temperature of the hot reservoir) and utilizes the steam to do work in turning the turbine of an electric generator.
Several children are on a sled pulled by a four-wheeler across a level snow-covered field
The temperature of a gold bar rises by 10.0°C when it absorbs 0.677 kJ of energy by heat. The mass of the bar is 525 g. Determine the specific heat of gold from these data
Shaving/makeup mirrors typically have one flat and one concave (magnifying) surface. You find that you can project a magnified image of a light bulb onto the wall of your bathroom, What is the focal length of the mirror
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