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1. A beta particle (high-speed electron) is traveling at right angles to a 0.43 T magnetic field. It has a speed of 2.5 107 m/s. What size force acts on the particle?
2. A magnetic field of 27 T acts in a direction due west. An electron is traveling due south at 7.0 105 m/s. What are the magnitude and direction of the force acting on the electron?
An object is solid throughout. When the object is completely submerged in ethyl alcohol, its apparent weight is 15.8 N. When completely submerged in water, its apparent weight is 13.8 N. What is the volume of the object?
A frictionless ramp is constructed so that it is at a 30 degree angle to the horizontal. It is 3.2 meters long and 1.6 meters high. A 3.0 kg block is released at the top of the ramp and slides down onto a frictionless horizontal surface where it h..
The end of the cutting cord on a gas powered weed cutter is 0.15 m in length. If the motor rotates at the rate of 20 rev/s, what is the tangential speed of the end of the cord
Suppose that the earth is a uniform sphere and that its path around the sun is circular. Determine the kinetic energy that the earth has because of its motion around the sun
Find the total power radiated out into space by the Sun assuming it to be at a temperature of 5500 K and the emissivity is 1
three equal point charges each with charge 1.80 muc are placed at the vertices of an equilateral triangle whose sides
q1. collapsible plastic bags are used in hospitals for infusions. we want to use such a bag to infuse an electrolyte
While working in a research lab, you find that it takes 211 J of heat to increase the temperature of 1.53 kg of a material by 44 K
Visible light (wavelength 400 - 700 nm) passes through a diffraction grating with 5000 lines/cm and illuminates a wall 5.0 m away. How wide (linear distance) is this order spectrum on the wall
To make a secure fit, rivets that are larger than the rivet hole are often used and the rivet is cooled (usually in dry ice) before it is placed in the hole
A disk with a radius of 1.5 m whose moment of inertia is 34 kg · m2 is caused to rotate by a force of 160 N tangent to the circumference
A 1000 kilogram wrecking ball hangs from a 15 meter long cable. Find by how much has the gravitational potential energy of ball changed
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