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A proton is released in a uniform electric field and it experiencesan electric force of 3.75x10^-14 N toward the South. What are themagnitude and direction of the electric field?
A 45.0-kg girl is standing on a 158-kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. What is the velocity of the plank relative to the surface of ice
During each cycle, a refrigerator ejects 680 kJ of energy to a high-temperature reservoir, and takes in 600 kJ of energy from a low-temperature reservoir. Determine the work done on the refrigerant in each cycle. Determine the coefficient of performa..
Calculate the energy of the electron in the ground state of double ionized lithium, which has an atomic number Z = 3
A 18.0 uF capacitor and a 5.40 mH inductor are connected in series with an open switch. The capacitor is initially charged to 6.50 uC. What is the angular frequency of the charge oscillations in the capacitor after the switch is closed?
Two identical +9.5uC point charges are initially 3.5cm from each other. If they are released at the same instant from rest, hoe fast will each be moving when they are very far away from each other? suppose they have identical masse of 1mg.
A cube of ice is taken from the freezer at -7.2 ?C and placed in a 115g aluminum calorimeter filled with 318g of water at room temperature of 20.0 ? C. What was the mass of the ice cube
Your car horn happens to have the unusual property of emitting a pure tone at a frequency of 640. Hz. What is the frequency of the echo
The overall length of a piccolo is 32.0 cm. The resonating air column vibrates as in a pipe that is open at both ends. Find the frequency of the lowest note a piccolo can play
A nonconducting solid sphere of radius R has a volume charge density that is proportional to the distance from the center. That is, ? = Ar for r R, where A is a constant. (Use the following as necessary: 0, A, r, and R, as necessary.)
A particle in a central force field has the orbit r=c*phi^2, where c is a constant. Find the angle as a function of time
What is the minimum diameter mirror on a telescope that would allow you to see details as small as 4.85 km on the moon some 384000 km away
Find out the type of mirror and how far the object is
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