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A point charge of 2.9 micro-Coulombs is placed next to an infinite sheet with a surface charge density of 7.8 micro-Coulombs/m^2. What is the magnitude of the force on the point charge in Newtons?
The construction of a flat rectangular roof (4.7m x5.3m) allows it to withstand a maximum net outward force of20007N. At what wind speed will this roof blow outward
An Emergency Vehicle Siren is designed to emit an 8000 Hz sound. You hear a 9143 Hz tone as it approaches you at 40.0m/s and a 7273 Hz tone as it recedes at 32 m/s. What is the temperature of the air
a point charge of -2.03 oc is located in the center of a spherical cavity of radius 6.52cm inside an insulating
A shopper pushes a cart 44- m south down one aisle and then turns 90.0° west and moves 30 m. He then makes another 90° turn and moves 13 m.
At the local grocery store, you push a 14.7-kg shopping cart. You stop for a moment to add a bag of dog food to your cart. With a force of 12.0 N, you now accelerate the cart from rest through a distance of 2.14 m in 3.00 s. What was the mass of the ..
A thin rod (length = 1.816 m) is oriented vertically, with its bottom end attached to the floor by means of a frictionless hinge. compute the magnitude of the angular acceleration of the rod
A 6 N force acts on a 0.3-kg object for 0.3 seconds. By how much does the object's momentum change (in kg-m/s)
An oscillator consists of a block of mass 0.600 kg connected to a spring. When set into oscillation with amplitude 42.0 cm, it is observed to repeat its motion every 0.750 s. Find the spring constant k.
Mary observes damped oscillations of a glider on air track. she observed that the amplitude decreased to 30% of its original value after 12s
A physics student in a hot air balloon ascends vertically at constant speed. suppose the following four forces that arise in this situation.
The springs of a 1400 kg car compress 4.0 mm when its 68 kg driver gets into the driver's seat. If the car goes over a bump, what will be the frequency of vibrations
Light with a frequency of 2.55 x 1015 Hz ejects electrons from the surface of aluminum, which has a work function of 4.28 eV. What is the minimum de Broglie wavelength of the ejected electrons? nm
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