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What is the direction of the electric field along the positive z semi-axis (vertical) if the field is created by:
a) a uniformly charged circle in the x-y plane with the center at the origin
b) a uniformly positively charged wire along the x axis
c) a uniformly positively charged infinitely long vertical cylinder with the cross-sectional center at x=0, y=0
A ship's anchor weighs 5000 N. Its cable passes over a roller of negligible mass and is wound around a hollow cylindrical drum of mass 380kg and radius 1.10m. The drum is mounted on a frictionless axle. The anchor is released and drops 16 m to water.
A circuit consists of two 150.?k? resistors in series with an ideal 12.0?V battery. Calculate the potential drop across one of the resistors
A homeowner is trying to move a stubborn rock from his yard which has a mass of 1.150 × 103 kg. what is the minimum total length of board required to move the rock
Your cell phone battery states that it has a capacity of 1200mAh. That means it can provide constant current supply of 1200mA for 1 hour (or 3600 sec), Your battery provides a constant voltage of 3.7V. What is the energy in Joules stored in the bat..
A thin, hollow 60.0 g section of pipe of radius 10.0 cm starts rolling (from rest) down a23.5° incline 5.40 m long. If the pipe rolls without slipping, what will beits speed at the base of the incline
Two closely spaced circular disks form a parallel-plate capacitor. Transferring1.3109 electrons from one disk to the other, What are the diameters of the disks
An object with a height of 5cm is placed in front of a concave mirror that has a focal length of 12cm. where should the object be placed
A cannon fires up at an angle 60 degrees above horizontal with a muzzle velocity of 60 m/s. What is the speed at the top of the cannonballs trajectory?
A woman stands on a scale in a moving elevator. Her mass is 55.0 kg, and the combined mass of the elevator and scale is an additional 755 kg. What does the scale read (in N) during the acceleration
Four moles of an ideal gas undergo a reversible isothermal expansion from volume V1 to volume V2 = 5V1 at temperature T = 400K. Find the entropy change of the gas
A playground carousel is free to rotate about its center on frictionless bearings, and air resistance is negligible. What is the person's mass
Discuss the position and size for the n = 1 state of Harmonic Oscillator. How do you picture this state? What is her size relative to the well wall? Does she penetrate the wall much?
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