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A beam of 161 MeV nitrogen nuclei is used for cancer therapy. If this beam is directed onto a 0.195 kg tumor and gives it a 200 rem dose, how many nitrogen nuclei were stopped?
A cyclist starts from rest and rides in a straight line, increasing speed so that her wheels have a constant angular acceleration of 2.0 rad/s2 around their axles. determine how far has the cyclist traveled
In a football game a kicker attempts a field goal. The ball remains in contact with the kicker's foot for 0.0205 s, through which time it experiences an acceleration of 220 m/s2. The ball is launched at an angle of 56.5° above the ground. Decide the ..
The refractive index of a material is 2.58. What is the critical angle for a light ray
Two speakers, one directly behind the other, are each generating a 374-Hz sound wave. What is the smallest parting distance between the speakers that will generate destructive interference at a listener standing in front of them? Take the speed of so..
Calculate the velocity of the river.
A 9.88-kg monkey is hanging by one arm from a branch and swinging on a vertical circle. Find the magnitude of the tension in the monkey's arm
What is the magnitude of the electric field due to a 6.0 x 10-9 C charge points located at 0.025m from the charge
A bullet, with an initial velocity of 300m/s and a mass of 5g, is fired into a block of wood. The bullet is brought to a stop at 5cm deep in the block of wood. Calculate the force the block of wood exerted on the bullet during this time
An arrangement of two pulleys, as shown in the figure, is used to lift a 46.0-kg mass a distance of 3.20 m above the starting point. What is the change in the potential energy of the weight when it is lifted a distance of 3.20 m
An 66 kg man on ice skates is pushing his 33 kg son, also on skates, with a force of 125 N. What force is exerted by the boy on his father
a bar magnet of magnetic moment 1.5 j t-1 lies aligned with the direction of a uniform magnetic field of 0.22 t.a what
A light bulb has a tungsten filament. When the bulb is just turned on and its temperature is 20? C, the current in the bulb is 0.86 A. What is then the temperature of the filament
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