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(A) An electron is accelerated from rest by a potential difference of 440 V. It then enters a uniform magnetic field of magnitude 220 mT with its velocity perpendicular to the field. Calculate the speed of the electron.
(B) Calculate the radius of its path in the magnetic field.
The Pulse frequency of a person is 90 beats/min, Find the power of heart if the density of mercury is 13.6 X 10^3 kg/m^3 (g=10 m/s^2)
The acceleration of a certain simple harmonic oscillator is given by a = - (15.8 m/s2) cos (2.51t). What is the amplitude of simple harmonic motion.
You are driving a car at the 25-mi/h speed limit when you observe the light at the intersection 68 m in front of you turn yellow. How fast were you going as you exited the intersection
A 840-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s, What is the average force exerted on the car
Two 1.90-cm-diameter disks spaced 2.10mmapart form a parallel-plate capacitor. The electric field between the disks is 5.10×105V/m, What was the electron's speed as it left the negative plate
Electron microscopy has proved invaluable for investigations of viruses, cell membranes and subcellular structures, bacterial surfaces, visual receptors, chloroplasts, and the contractile properties of muscles. The "lenses" of an electron microsco..
Two people carry a heavy electric motor by placing it on a light board 2.70m long. One person lifts at one end with a force of 380N, Where is its center of gravity located
A uniform steel plate has an area of 0.905 m2. When subjected to a temperature difference between its sides, a heat current* of 22.5 kW is found to flow through it. What is the temperature gradient? What is the temperature difference when the plat..
the driver of a train moving at 20 m/s applies the brakes when it passes an amber signal. Find the train's acceleration and its speed at the next signal
It's generally okay to ignore relativistic effects when a particle's speed is less than 1.0% of the speed of light, Find the accelerating potential difference that will bring electrons to that speed, starting from rest
If 0.040kg of ice at 0 C is added to 0.390kg of water at 30 C in a 0.130-kg aluminum calorimeter cup
When serving a tennis ball, the player hits it when its velocity is zero (at the highest point of a vertical toss). find the mass of the ball
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