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Assume a beam of 4.60 eV protons strikes a potential energy barrier of height 6.30 eV and thickness 0.890 nm, at a rate equivalent to a current of 1180 A. How many years would you have to wait (on average) for one proton to be transmitted during the barrier?
A 55 kg block of ice slides down a frictionless ramp that is 2.0 m long and 0.91 m high. Find the force exerted by the worker
The magnitude of a single force action on a particle of a mass m is given by F = bx2 where b is a constant. The particle starts from rest. After it travels a distance L, estimate what is its kinetic energy and speed
A 5.0 kg shell is fired vertically upward. At its max height of 350.0 m, it explodes into 3 pieces. A 1.0 kg chunk lands 15.0 m away, where does the third piece land
Two trucks of equal mass collide at a 90 intersection. If the momentum of truck A is 9.50x10^4 kg km/h east and the momentum of B is 1.05x10^5 kg km/ north, what is the resulting momentum of the final mass
Two bars of identical mass are at 33°C. One is made from glass and the other from another substance. Find the specific heat capacity of the other substance
When a horizontal force of 250N is applied to a 70.0 KG box, the box slides on a level floor, What is the magnitude of the acceleration of the box
A beam of red light whose frequency is 4.29x10^14, passes through a piece of dense flint glass (n=1.66) in 40x10^-12 seconds, Find the thickness of the glass
he resolving power of a microscope depends on the wavelength used. what minimum kinetic energy is required for the electrons
A fire truck connects their hose (radius r1 = 5 cm) to a fire hydrant. The underground water lines have a radius of r2 = 15 cm, How high above the end of the hose will the water reach
A microscope has an objective lens with a focal length of16.22 mm and an eyepiece with a focal length of 9.40 mm. what is the actual diameter of the red blood cell
A 2.0-C charge moves with a velocity of (2.0i + 4.0j + 6.0k) m/s and experiences a magnetic force of (4.0i - 20j + 12k) N. The x component of the magnetic field is equal to zero. Find out the y component of the magnetic field.
1 why does the stroboscope appear to make the vibrations stop at certain frequencies? why does it appear to be two
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