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A proton accelerates from rest in a uniform electric field of 680 N/C. At some later time, its speed is 1.40 multiplied by 106 m/s.
(a) Find the magnitude of the acceleration of the proton.(b) How long does it take the proton to reach this speed?(c) How far has it moved in that interval?(d) What is its kinetic energy at the later time?
An initially uncharged electroscope is polarized by bringing a negatively charged rubber rod near the bulb. If the bulb end of the electroscope acquires a net charge of +2.60pC , how many electrons are on the leaf end
A ball, initially at y = 0, is thrown straight down and takes 1.40 s to move 13.8 m in the - y direction. Calculate the initial velocity of the ball
The potential difference between the surface of a 2.2cm -diameter power line and a point 1.3m distant is 3.7kV. What is the line charge density on the power line
A sound wave generated by a source of frequency 440 Hz is moving through 25 oC air. What is the wavelength of the sound wave inside the steel
a student adds two perpendicular displacement vectors of magnitude 12.0 cm and 8.0 cm. which of the following is the
If an electric clothes dryer has a power rating of 5000 watts and is used for 1 hour per day, how much money can be saved in a month
If 43.8 cm of copper wire (diameter = 1.02 mm, resistivity = 1.69 x 10-8?·m) is formed into a circular loop and placed perpendicular to a uniform magnetic field that is increasing at the constant rate of 8.38 mT/s
q1. an airplane is flying with a velocity of 83.0 at an angle of 22.0 above the horizontal. when the plane is a
A 80.5 kg firefighter slides down a pole while a constant frictional force of 300 N retards her motion. Find the firefighter's speed just before she collides with the platform
A washer is constructed from soft steel (density p = 7.9•10^3 kg/m^3). Its inside and outside dimensions are 2.00 cm and 3.30 cm, and it's thickness is 0.50 cm.
Assuming frictionless conditions, a table has a hanging mass, m1, over a pulley at the left side and another hanging mass, If m1 = .45kg, & m2 = .3kg, & m3 = .25kg what is the new accelration of the system
What additional experiment can help you decide between these two possibilities.
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