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An alpha particle (alpha), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an electric field. The particle then begins to move. Find the speed of the alpha particle after it has moved through a potential difference of ?3.45×10?3V.
The charge and the mass of an alpha particle are q_{\alpha} = 3.20×10?19C and alpha = 6.68×10?27kg , respectively.
What is the final velocity of the alpha particle, Vf of alpha?
A trained dolphin leaps from the water with an initial speed of 12. What is the vertical distance between the dolphin and the ball when the dolphin reaches the horizontal position of the ball
The fringes observed in a double-slit interference experiment when the two slits are illuminated by white light show dispersion of both light and color, how many bright fringes can be seen on the screen
Two additional charges are fixed on the circle of the compass (radius = 0.125 m). The charges on the circle are -3.90 µC at the position due north and +5.00 µC at the position due east.
determine the speed of the ball after the ball. A positive charge q is fired by a small hole in the positive plate of a capacitor.
find the time rocket reaches the peak height of trajectory.
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
A dentist's drill starts from rest. After 3.30 s of constant angular acceleration it turns at a rate of 2.0 x 10^4 rev/min. Find the drill's angular acceleration
A playground merry-go-round of radius R = 1.80 m has a moment of inertia I = 260 kg · m2 and is rotating at 11.0 rev/min about a frictionless vertical axle. What is the new angular speed of the merry-go-round
suppose a speck of dust in an electrostatic precipitator has 1.0000x1012 protons in it and has a net charge of -5.00nc
The tension in a ligament in the human knee is approximately proportional to the extension of the ligament, What is the tension in this ligament when it is stretched by 0.67 cm
The centripetal and tangential accelerations are equal
A machinist turns the power on to a grinding wheel, at rest, at time t=0 s. What is the angular velocity in the time interval from t=0 to t=25s
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