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Imagine that you fire a proton at the nucleus of a gold atom (which contains 79 protons and 118 neutrons). What does the proton's initial speed have to be if it is to penetrate the gold nucleus (whose raduis is about 6 fm)? Express your answer as a fraction of the speed of light (One way to measure nuclear radii is to find the speed that such a proton ust have to be absorbed).
a single conducting loop of wire has an area of 7.1times10?2 m2 and a resistance of 120 ohms. perpendicular to the
A student's car stalls right in front of a speed bump while she is on her way to physics class. what is the size of the force pulling the car in lbs
two vehicles of equal mass at a 90 degree intersection. If the momentum of vehicle A is 1.20 x 10^5 kg km/h east and the momentum of vehicle is 8.50 x 10^4 kg km/h north, what is the resulting momentum of the final mass
An object (3.7kg) is lifted 4.6 m above the ground and thendropped to the ground. What is the object's Pe at the top ofthe lift, How much work did gravity do on the object
During a violent thunderstorm, hail the size of marbles (diameter = 2.10 cm) falls at a speed of 37.0 m/s. What is the mass of each hailstone
A 0.940 kg block slides on a frictionless horizontal surface with aspeed of 1.70 m/s. The bock encounters an unstretched springwith a force constant of 260 N/m. Find the total time ofcontact with the spring before the block comes to rest.
The bunchberry flower has the fastest-moving parts ever seen in a plant.at first , the stamen are held by the petals in a bent position, storing elastic energy like a coiled spring.
44.3 kg of ice is melted into water then raised to a temperture of 354.8 K. How much energy is needed to complete this process
What is the wavelength of an 102.1 FM radio station and What is the wavelength of an 1310 AM radio station
Stanford Linear Accelerator Center (SLAC) bombarded 9-GeV electrons head on with 3.1GeV positrons to create B mesons and anti-B mesons. Whats speeds did the electron and positron have when they collided?
The earth has a vertical electric field at the surface, pointing down, that averages 120 N/C. What is the excess charge on the surface of the earth
A ball is thrown so that its initial vertical and horizontal components of velocity are 60 m/s and 15 m/s, respectively. Estimate the maximum height the ball reaches
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