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Which of the following statements are true about nuclei and the nuclear force?
Mass number indicates the number of protons in a nucleus A: True B: False the nuclear force is stronger than the electric (Coulomb) force A: True B: False the nuclear force is a long-range attractive force A: True B: False atomic number indicates the number of protons in a nucleus A: True B: False isotopes are nuclei that have the same atomic number Z, but different values of N
A 620 g basketball is pushed up a 30° ramp. The ball starts from rest and the length of the surface of the ramp is 5 m. What was the magnitude of the pushing force (in N)
A wave has a known propagation velocity of 4.32 m/s and a wavelength of 0.388 meters. What is the position equation of the wave
At 18°C, a rod is exactly 20 cm long on a steel ruler. Both the rod and the ruler are placed in an oven at 285°C, where the rod now measures 20.21 cm on the same ruler. What is the coefficient of linear expansion for the material of which the rod ..
You want to use a lens with a focal length of 37.0cm to produce a real image of an object, with the image twice as long as the object itself. Where should the object be placed
How several 90-rm W, 120-rm V light bulbs can be connected to a 20-rm A, 120-rm V circuit without tripping the circuit breaker.
Iced tea is made by adding ice to 2.4 kg of hot tea, initially at 70?C. How many kg of ice, initially at 0?C, are required to bring the mixture to 10?C? (Lf = 3.33×105 J/kg, cw = 4,186 J/kg•? C)
The crew of a rocket that is moving away from the earth launches an escape pod, which they measure to be 55 m long. What is the length of the escape pod as determined by an observer on earth
At a distance of 20m from a source of sound, the sound level is 40 dB. what will the sound level be
If, between asphalt and rubber, the coeficient of static friction is 1.23 and the coefient of kinetic friction is .98 What is the fastest the car can accelerate
If a lens with focal length 10 cm is placed 30 cm from an image 3 cm tall, how tall is the resulting image
An electron that has velocity vector v = (3.4 106 m/s) i hat + (2.9 106 m/s) j hat moves through a magnetic field vector B = (0.03 T) i hat - (0.15 T) j hat. Find the force on the electron
A 1.9-kilogram mud ball drops from rest at a height of 18 m. If the impact between the ball and the ground lasts 0.56s, Find the final velocity of the 4.90-kg ball if the collision is elastic
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