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A pail of water is rotated in a vertical circle of radius 1.45 m. What is the minimum speed of the pail at the top of the circle if no water is to spill out?
A system with m = 0.041 kg , k = 25 N/m and b = 0.33 kg/s is driven by a harmonically varying force of amplitude 4.7 N. Find the amplitude of the steady-state motion
The radioactive hydrogen isotope 3H is calledtritium. It has beta-minus decay and a daughter necleus of 3He. What is the time constant for tritium
Two parallel plates, each with an area of 110, are given equal and opposite charges of magnitude 0.18. The space between the plates is filled with the dielectric material, and the electric field within the dielectric is 0.31.
(a) Calculate the index of refraction of the polymer if the refracted angle is 26 degrees. (b) Calculate the critical angle of the polymer in air. (c) Calculate the speed of light in the polymer.
A series ac circuit contains a 230? resistor, a 18.0mH inductor, a 4.50?F capacitor, What is the power factor of this circuit
You have a cup containing 220 g of freshly brewed coffee which, at 75C, is too warm to drink. estimate how much the entropy of the universe increases
A bird sits on a high-voltage power line with its feet 4.6 cm apart. What is the potential difference between the bird's feet
A proton with an initial velocity of (1.0x + 2.0y + 3.0z) x 10^5 m/s enters a megnetic field of 0.50z T. Find the magnitude of the force on the proton. The mass of the proton is 1.67 x 10^-27 kg.
A long solenoid has 140 turns/cm and carries current i. An electron moves within the solenoid in a circle of radius 2.60 cm perpendicular to the solenoid axis. Find the current i in the solenoid
Two circular metal plates with diameter 18 cm and separated by a distance of 2mm are connected in series with a 10 cm long cylindrical piece of material with diameter 1 mm and a 10 v battery. FIND the capacitance of the two circular metal plates wi..
A 50g ball travelling at 25m/s is bounced off a brick wall and rebounds at 22m/s. A high speed camera records this event. If the ball is in contact with the wall for 3.5ms, what is the average acceleration of the ball throughout this time interval..
An electron traveling horizontally to the right enters a region where a uniform electric field is directed downward. What is the direction of the electric force exerted on the electron once it enters the electric field? A. to the left B. to the ri..
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