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Calculate and compare the electron densities of a piece of aluminum 1 cm thick and a piece of iron of the same density thickness. Show your work.
Your car tire is rotating at 3.3 rev/s when suddenly you press down hard on the accelerator. What was the tire's angular acceleration
22g of nitrogen gas at STP are pressurized in an isochoric process to a pressure of 30atm. What is the pressure ratio
A spaceship travels at constant velocity from Earth to a point 745 ly away as measured in Earth's rest frame. The ship's speed relative to Earth is 0.9996c. How old is the passenger when the ship reaches its destination
A very short solenoid contains N = 20 circular loops of wire. what is the magnetic field in the center of the solenoid
A child's toy consists of a piece of plastic attached to a spring. The spring is compressed against the floor a distance of 1.2 cm, and the toy is released. If the spring constant is 103 N/m, what is the magnitude of the spring force acting on the..
A Molecule of DNA is 2.17 um long. The ends of the molecule become strongly ionized: negative on one end, positive on the other. The helical molecule acts like a spring and compresses 0.78% upon becoming charged. Determine the effective spring con..
A 6.2\({\rm ft}\) tall shopper in a department store is 18\({\rm ft}\) from a convex security mirror, What is the mirror's radius of curvature
Gold, which has a mass of 19.32 g for each cubic centimeter of volume, is the most ductile metal, what is the area of the leaf in square meters
A particular heat engine has a useful power output of 4.90 kW and an efficiency of 27.0%. In each cycle, Find the time interval for each cycle
A pair of oppositely charged parallel plates are separated by a distance of 5 cm with a potential difference of 550 V between the plates. A proton is released from rest at the positive plate at the equal time that an electron is released from rest..
Capacitors C1 = 5.60 µF and C2 = 2.45 µF are charged as a parallel combination across a 250 V battery, Calculate the resulting charge on each capacitor
A capacitor is constructed with plates of area A and separation s. The area between the plates is ?lled with a weakly ionized gas — a very poor conductive medium with resistivity = 10^8 ohms * cm. The density of the gas is so low that it has no e?e..
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