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In a simple model for a radioactive nucleus, an alpha particle ( m = 6.64 * 10^-27 kg) is trapped by a square barrier that has width 2.0 fm and height 30.0 MeV. What is the tunneling probability if the energy of the alpha particle is 13.0 MeV below the top of the barrier?
A) How fast should the car be traveling just as it leaves the cliff in order to just clear the river and land safely on the opposite side? B) What is the speed of the car just before it lands safely on the other side?
A sign weighing 498 N is suspended at the end of a uniform rod 4.04 m long weighing 663 N as shown below. What is the tension in the support cable
An astronaut travels to the nearest start system. 10 light years away, and returns at a speed of 0.5c. How much has the astronaut aged relative to those people remaining on Earth?
find the coefficient of kinetic friction between the slide and the child.
An electron is in the fifth Bohr orbit of hydrogen. Calculate the time required for the electron to circle the nucleus
question1a 100-kg athlete is performing vertical leap to test his leg strength. he leaves ground at 3.20 ms zooms
Determine the magnitude of the force on an electron traveling 7.85×105m/s horizontally to the east in a vertically upward magnetic field of strength 0.44T
A transformer changes the 10,000 V power line to 120 V. If the primary coil contains 750 turns, how many turns are on the secondary
A golf ball is shot from a tee, elevated 20.0 m above the green, what will be the speed of the golf ball just before it hits the green, 20.0 m below where it started
A circular loop of wire of radius 0.50 m is in a uniform magnetic field of 0.30 T. The current in the loop is 2.0 A. What is the magnetic torque when the plane of the loop is perpendicular to the magnetic field
A certain brand of hotdog cooker works by applying a potential difference of 142 V across opposite ends of a hot dog and allowing it to cook by means of the thermal energy produced.How much electrical energy is transferred to thermal energy.
A copper beaker of mass 0.20 kg contains 0.10 kg of water at 20.0degree C. A block of silver of mass 100 g at 90.0 degree C is added to the beaker of water. The entire system is thermally insulated from the surroundings, (specific heats- copper: 3..
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