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An electron and a proton are initially very far apart (effectively an infinite distance apart). They are then brought together to form a hydrogen atom, in which the electron orbits the proton at an average distance of 5.50 10-11 m. What is EPEfinal - EPEinitial, which is the change in the electric potential energy?
after completing the calculations below sketch the ph curve for the titration of 25.0 ml of 0.200m solution of a weak
At the bottom, it strikes a block of mass M=2m which is at rest on the horizontal surface. Assume that the transition at the bottom is smooth, determine the speeds of the two blocks after the collision
A mad doctor believes that baldness can be cured by warming the scalp with sound waves. His patients sit underneath the Bald-o-Matic loudspeakers, how many minutes should each therapy session last
In this problem you will consider the balance of thermalenergy radiated and absorbed by a person. Assume that the person is wearing only a skimpy bathing suit of negligible area. how much thermal power P does the human body radiate
A closely wound rectangular coil of 85.0 turns has dimensions of 26.0cm by 46.0cm. estimate the average emf induced in the coil
a skier of mass m is standing on a slope with an angle of elevation ø. After being given a tiny nudge, the skier slides down the slope, how much energy is lost while the skier slides down the incline
The security alarm on a parked car goes off and produces a frequency of 1190 Hz. At what speed are you driving
The robot HooRU is lost in space, floating around aimlessly, and radiates heat into the depths of the cosmos at the rate of 13.5 W. What is HooRU\'s temperature
four lightweight balls a b c and d are suspended by threads. ball a has been touched by a plastic rod that was rubbed
Blue light of frequency 6.0 1014 Hz falls on the surface of potassium, which has a work function of 2.26 eV. Find the maximum kinetic energy of emitted electrons
Positively charged aluminum ion, Al3+, has a mass of 4:50 1026 kg. After being accelerated through a potential dierence of 650 V, Calculate the radius of the path of the ion in the eld
A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on the x-axis. What is the direction of the electric field at the point on the x-axis, between the charges, where the electric potential is zero
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