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Calculate the capacitance of a capacitor whose plates a 20.0 cm by 3.0 cm and are separated by a 1.0mm air gap.
a) What is the charge on each plate if the capacitor is connected to a 12.0 V battery?
b) What is the electric field between the plates?
c) Extimate the area of the plates needed to achieve a capacitance of 1.0F, given the same air gap?
The flask was filled to the calibration mark with water, and the contents were thoroughly mixed. What were the equilibrium concentrations of H+, Na+, H2PO-4 , and HPO-2 in the resultant solution? Ka1 = 7.1x10-3, Ka2 = 6.3x10-8, and Ka3 = 4.2x10-13..
What is the purpose of balance sheet classification? How useful is the information produced from a classified balance sheet? What are some alternative classification systems that could be used?
a solenoid has a diameter of 12cm when a current i exists in its winding a uniform magnetic field of magnitude B = 30mT is produced in its interior. Calculate the magnitude of the induced electric field
What if you were a manager of a company? What measurement problems are illustrated by this question?
In an experiment conducted at room temperature, a current of 0.820 flows through a wire 2.86 in diameter. Find the magnitude of the electric field in the wire if the wire is made of tungsten
Explain at least one theory of human freedom from your assigned readings. Cite support from the primary text selections in the chapter as well as authoritative secondary sources such as the course text and online lectures.
What is the pH of 100. mL of a buffer solution where the concentration of acetic acid is 0.50 M and the concentration of sodium acetate is 1.0 M? Ka = 1.8 x 10-5 for acetic acid.
How does the asset impairment measurement approach of SFAS No. 121, Accounting for the Impairment of Long-Lived Assets and for Long-Lived Assets to Be Disposed Of, compare to deprival value?
A sound wave with intensity 39 mW/m2 interferes constructively with a sound wave that has an intensity of 12 mW/m2. What is the intensity of the superposition of the two
The longest "string" (a thick metal wire) on a particular piano is 3.0 m long and has a tension of 300.0 N. What is the total mass of the wire
a car starts at rest. it then accelerates at a rate of 1.3 ms east for 8.2 seconds. if itcontinues as this new velocity
A simple harmonic oscillator consists of a block of mass 4.kg attached to a spring of spring constant 153 N/m. When t = 2 s, the position and velocity of the block are x = +0.129 m and v = +3.415 m/s.
A nichrome toaster wire, initially at room temperature, carries 2.72A immediately after it's turned on. After the wire heats, the current drops to 2.44A
A motorist travelling at 17m/s encounters a deer in the road 49m ahead. If the maximum acceleration the vehicle's brakes are capable of is -7 m/s2. If his or her reaction time is 1.9987 s, how fast will (s) he be travelling when (s) he reaches dee..
A 155 g copper bowl contains 245 g of water, both at 20°C. A very hot 300 g copper cylinder is dropped into the water, causing the water to boil, with 5 g being converted to steam. The final temperature of the system is 100°C. Neglect energy trans..
Planet Z is 1.00×104km in diameter. The free-fall acceleration on Planet Z is 10.0m/s2. What is the mass of Planet Z
At a construction site, a 62.0 kg bucket of concrete hangs from a light (but strong) cable that passes over a light friction-free pulley and is connected to an 84.0 kg box on a horizontal roof. Find the friction force on the box
A 2.0g metal ball that carries a charge of 10uC is placed into an electric field, what is the electric potential difference between point A and point B
A spherical pinball, initially at rest, rolls down a ramp inclined at 18 degrees relative to horizontal. Determine the translational speed after 3 seconds
A child on roller skates undergoes an acceleration of 0.8 m/s2 due to a horizontal net force of 20 N. What is the mass of the child
A large cruise ship of mass 6.80 107 kg has a speed of 12.8 m/s at some instant. what is the ship's kinetic energy at this time
we mixed up some unknown mass of ice at 0 C with 1 kg of steam at 100 C and soon established thermal equalibrium at 55 C what was the mass of ice
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