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A 15 kg brick rests on a roof that is at an angle of 40º to the horizontal. What is the component of the force into the surface of the roof?
In a spherical metal shell of radius R, an electron is shot from the center directly toward a tiny hole in the shell, What is the magnitude of the electron's acceleration
After being accelerated to a speed of 1.62×105m/s , the particle enters a uniform magnetic field of strength 1.00T, Find the ratio m/q for this particle
Illustrate what is the magnitude of the net gravitational force on the mass at the origin due to the other two masses?
At a factory, a noon whistle is sounding with a frequency of 480-Hz. As a car travelling at 79 km/h approaches the factory, the driver hears the whistle at frequency fi. After driving past the factory.
A parallel beam of light containing red (660 nm) and violet (410 nm) wavelengths goes from diamond to water, striking the surface between them at a 19° incident angle
How much force is needed to hold a 7.0 cm diameter hose delivering 440 L/min through a 0.73cm diameter nozzle.
Illustrate what is the coefficient of static friction between the chair and the floor? What is the coefficient of kinetic friction between the chair and the floor?
A 340 kg piano slides 3.7 m down a 33° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.37.
Some of the earliest atomic models held that the orbital velocity of an electron in an atom could be correlated with the radius of the atom, what is the kinetic energy of this orbital electron
A girl sits fixed on a merry-go-round of mass M = 500 kg and radius R = 2 m. The merry-go-round is at first at rest and is free to rotate without friction.
Find out a mathematical expression in terms of x, y, and z for the y-component of the force on the particle.
Point charges q1=? 4.80nC andq2=+ 4.80nC are separated by distance 3.90mm , forming an electric dipole, Find the magnitude of the electric dipole moment
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