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An 11.0 m, 230 N uniform ladder rests against a smooth wall. The coefficient of static friction between the ladder and the ground is 0.65, and the ladder makes a 50.0° angle with the ground. How
What is the distance of a sample of blood from the rotation axis of a centrifuge rotating at 3500 rpm, if it has an acceleration of 2000g?
A motorcycle rider starts from rest and goes 3.75 rad counterclockwise around a circular track in 12.3 seconds. Assuming she accelerates at a constant rate, what is her angular acceleration?
A potter's wheel is rotating at 3.2 rad/s in a counterclockwise direction when the potter turns it off and lets it slow to a stop This takes 26 seconds. What is the average angular acceleration of t
If the cam is rotating at a constant angular velocity of 5 rad s, determine the maximum and minimum force the cam exerts on the roller at A. Neglect friction at the bearing C and the mass of the rol
Methane gas (CH4) comprises 7 x 10-5 % by mass of the Earth's atmosphere. What is the residence time of the gas in the atmosphere if it is being lost to the methane sinks at the rate of 4 x 1011 kg
A particle oscillates in simple harmonic motion with a period of 2.04 s and anamplitude of 4.71cm. At t = 0, it is at z = 2:0 cm and it is moving towardz = 0. We wish to write the position of the pa
Excluding the ball, the total mass of the platform and people is 118 kg. Because of the throw, this mass recoils. How far does it move before coming to rest again?
A 3-kg object moving to the right on a frictionless, horizontal surface with a speed of 2 m/s collides head-on and sticks to a 2-kg object that is initially moving to the left with a speed of 4 m/s.
Two convex lenses with focal lengths f1 = 6.0cm and f2 = 8.0cm are located 24.4cm apart. An object is located 13cm in front of the first lense. Calculate the distance from lense 2 to the final image
An AC generator consists of 6 turns of wire. Each turn has an area of 0.040m^2. the loop rotates in a uniform field (B=0.20T) at a constant frequency of 50 Hz. what is the maximum induced emf?
If the bead is released from rest halfway between the two plates, what is the speed of the bead when it hits one of the plates?
The plates of a spherical capacitor have radii 3.7 cm and 4 cm, with a vacuum in between them. a.) Find the surface area of the inner and outer spherical plates.
You construct a capacitor using a Pyrex drinking glass. The glass is 10 cm tall with an inner radius of 3.4 cm and an outer radius of 3.7 cm. You line the inside and outside curved surfaces with al
Find the magnetic field strength (in Gauss) for a current of 3.7 A in the Helmholtz coils with 145 turn, assuming a coil radius of 15 cm. Express the answer with one decimal place.
An electron is accelerated through an electric potential of 146 V, then enters a 37 Gauss magnetic field in a direction at a right angle to the velocity. Find the radius in cm of the subsequent circ
A magnet is at the end of the Dial-O-Gram balance arm. The arm has an aluminum plate in the magnetic gap. What is the purpose of this magnet system? (You may want to search online for eddy current o
What will be the smallest distance between the two charges after the top charge is released?
The ball sticks in the barrel at the point of maximum compression of the spring. assum that the increase in thermal energy due to friction between the ball and the barrel is negligible. (a) what is
The loop is in a uniform magnetic field of magnitude 90.9 mT whose direction is parallel to the current in the 180 cm side of the loop. What is the magnitude of the magnetic force on:
Two parallel plates of area 5 m2 are separated by a distance of 1.0 x 10-5m. They have charges on them of equal magnitude but opposite sign There is a potential difference of 32 volts from one plate
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at8rev/s.60revolutions later, its angular speed is 19 rev/s.
A current i = 28 A is then sent through the strip such that a Hall potential difference V appears across the width. Calculate V (in V). (The number of charge carriers per unit volume for copper is 8