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A uniform disc of radius 30 cm and mass 12 kg is pivoted so that it is free to rotate about an axis through its center. A string wrapped around the disc is pulled with a force of 80 N. What is the acceleration of the disc?
Because of the cramped space under the hood, you'll need to pull at an angle of 105 with respect to the wrench shaft. Illustrate with what force must you pull?
In the experiment you will observe well defined "bumps" in the string, and you will measure their length. What is the relation between this length and the wavelength of the wave
Runner A is at first 6.60 km west of a flagpole and is running with a constant velocity of 6.4 km/h due east. Runner B is firstly 7.20 km east of the flagpole and is running with a constant velocity of 8.80 km/h due west.
A 11.3 kg object hangs in equilibrium at the end of a rope (taken as mass less), while a wind pushes the object with a 64.9 N horizontal force, Find the tension in the rope and the rope's angle from the vertical
Two waves are traveling in the same direction along a stretched string. The waves are 45.0° out of phase. Find the amplitude of the resultant wave
An S wave crosses the boundary between two different types of rock. The angle of incidence is 22° and the angle of refraction is 34°. what is the speed past the boundary
We all sound like great singers in the shower, due to standing waves. What are the wavelengths of the first two overtones for this shower
The density of a sample of air is 1.205 kg/m3, and the bulk modulus is 1.42 105 N/m2, Find the temperature of the air sample
A car is coasting along at 20 m/s on a road along the top of a hill that is 100 meters high. how fast is it going when it reaches the bottom
A battery has an emf of 5.9 V and internal resistance of 0.78 ?. The battery is attached to the load resistor R = 7.3 ?. Find the electric current in the circuit.
A 51.0-g Super Ball traveling at 27.0 m/s bounces off a brick wall and rebounds at 21.5 m/s. A high-speed camera records this event. If the ball is in contact with the wall for 3.75 ms,
q1. the brick wall of thermal conductivity 0.91 wmdegrees c of a building has dimensions 2.9 m by 6 m and is 18 cm
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