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In a home laundry dryer, a cylindrical tub containing wet clothes is rotated steadily about a horizontal axis as shown in the figure below. So that the clothes will dry uniformly, they are made to tumble. The rate of rotation of the smooth-walled tub is chosen so that a small piece of cloth will lose contact with the tub when the cloth is at an angle of ? = 67.5° above the horizontal. If the radius of the tub is r = 0.425 m, what rate of revolution is needed?
Three resistors with values 0.90? , 2.9? , and 4.2? are connected in parallel in a circuit with a 6.4V battery. What is the total equivalent resistance
Three point charges are located at the corners of an equilateral triangle as shown below. Calculate the resultant electric force on the 7.00 µC charge
The position of an object as a function of time is vector(r)=(3.2t + 1.8t^2)i + (1.7t - 2.4t^2)j meters, where t is the time in seconds. Find the object's magnitude of the acceleration
A gold nucleus contains 197 nucleons packed tightly against each other. A single nucleon (proton or neutron) has a radius of about 1.310-15 m. Calculate the approximate radius of the gold nucleus. (Hint: Remember that the volume of a sphere is (4/..
Two charges, q1 = -80 nC and q2 = +50 nC are placed 3 m apart as shown. The (x,y) coordinates of the charges and two other points in meters are indicated. Find out the electric potential at points A and B
A uniform metal rod, with a mass of 3.4 kg and a length of 1.3 m, is attached to a wall by a hinge at its base. Find the vertical component of the force exerted on the rod by the hinge
A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. find minimum and maximum inductance of the tank circuit
An 8.70kg block slides with an initial speed of 1.84 m/s down a ramp inclined at an angle of 28.2 with the horizontal. find the distance the block slides before coming to rest
Evaluate the magnitude of the apparent weight of a 84 kg astronaut 4500 km from the center of the Earth's Moon in a space vehicle accelerating toward the Moon at 3.1 m/s^2?
A gas bubble with an initial volume of 7.00 milliliters rises from a depth of meters. If the temperature does not change, what is its volume, to nearest ml, when it reaches the surface (density of water=1000 kg/m^3)?
A block is being pulled by a rope with a force of 24 N. The rope has an angle of theta=20 degrees from the horizontal. The block moves a distance of 11 m. Elucidate what is the work done?
The average density of the planet Saturn is 688 kg/m3. The acceleration of gravity on its surface is 11.20 m/s2. Calculate the average radius of Saturn
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