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An electron of mass 9.11E-31 kg has an initial speed of 3E5 m/sec. It travels in a straight line and its speed increases to 7E5 m/sec in a distance of 5.0 cm.
a) What is the force on the electron?
b) Compare this force with the weight of the electron.
A bicycle wheel of radius 0.70m is rolling without slipping on a horizontal surface with an angular speed of 4Pi rad/s, What is the tangential deceleration of the bicycle
The yellow light from a helium discharge tube has a wavelength of 587.5 nm. Calculate the number of lines per centimeter on the grating
At room temperature (20C) the area of a hole in a sheet of material is 5.505 cm2. What is the thermal coefficient of linear expansion for the material
A square plate of copper with 55.0 cm sides has no net charge and is placed in a region of uniform electric field of 83.0 kN/C directed perpendicularly to the plate. Find the charge density of each face of the plate
A wave crest passes an observation point followed by a second crest. how long are the wavelengths
A spring has a force constant of 100 N/m and an unstretched length of .07 m. One end is attached to a post that is free to rotate in the center of a smooth table.
How much work does the string do on the boy if the boy walks a horizontal distance of 11m away from the kite? How much work does the string do on the boy if the boy walks a horizontal distance of 11m toward the kite.
Two automobiles drive in the same direction next to the highway. Each moves initially at speed v = 30 meters per second, (that's 67.11 miles per hour) and the distance between them is D meters.
Under some circumstances, a star can collapse into an extremely dense object made mostly of neutrons and called a neutron star. find the angular speed of the neutron star
An air-track glider attached to a spring oscillates between the 8.00 mark and the 69.0 mark on the track. The glider completes 10.0 oscillations in 40.0 .
A hoop and a disk, both of 0.86- m radius and 5.0- kg mass, are released from the top of an inclined plane 3.5 m high and 9.0 m long. What is the speed of the hoop
What is the boats average speed. imagine the mass of the dishwater is large enough so its temperature doesn't change appreciably.
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