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A ball of weight Q and radius r is attached by a string AD to a vertical wall AB, as shownin Fig. Determine the tensile force S in the string and the reaction Rb against the wall atB if Q = 90 N, r = 75 mm, AB = 100 mm. Neglect friction at wall.
A small loop of wire of radius 1.9 cm is placed at the center of a wire loop with radius20 cm. Estimate the magnitude of the torque the large loop exerts on the smaller one
A 2.40cm × 2.40cm square loop of wire with resistance 1.10×10?2? has one edge parallel to a long straight wire. calculate the current in the loop
A 494 g air-track glider attached to a spring with spring constant 7.5 N/m is sitting at rest on a frictionless air track. What is the period of the subsequent oscillations
An ambulance traveling at 47 m/s approaches a car heading in the same direction at a speed of 31 m/s. At what frequency does the driver of the car hear the siren
A car completes one lap in a time of 19.3 s, with an average translational speed of 45.2 m/s. What is the radius of the track, and what was the car's average angular speed for that lap
Light in air is incident perpendicularly on a sheet of crown glass having an index of refraction of 1.522. Determine both the reflectance and transmittance.
The potential difference from the cathode (negative electrode) to the screen of an old television set is +22,000 V. An electron leaves the cathode with an initial speed of zero. Determine the kinetic energy of the electron.
The maximum transverse acceleration of a point at the middle of the segment is 8800 m/s^2 and the maximum transverse velocity is 3.50m/s.
In proton-beam therapy, a high-energy beam of protons is fired at a tumor. What is the total charge of the protons that must be fired at the tumor to deposit the required energy
A space ship releases a satellite at an altitude of 220 km while orbiting a planet having a radius and mass of 6400 km and 2.6E28 kg, respectively.
A small glass bead has been charged to +30.0nC. A metal ball bearing 1.30cm above the bead feels a 1.90×10?2N downward electric force. What is the charge on the ball bearing?
Each plate of a parallel-plate capacitor is a square of side 3.17 cm and the plates are separated by 0.551 mm. Find the electric field strength inside the capacitor
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