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In a serious accident, a nuclear power plant%u2019s reactor vessel cracks, and all of the cooling water drains out. Although nuclear fission stops, radioactive decay continues to heat the reactor%u2019s 2.5 X 105 kg uranium core at a rate of 120 Mega-Watts. Once the core reaches its melting point, how much energy will it take to melt the core? How long will the melting take?
A nanowire is a (nearly) one-dimensional structure with a diameter on the order of a few nanometers.
A popular pastime is to see who can push an object closest to the edge of a table without its going off. what was the object's speed as you released it
A chest x ray uses 14 keV photons. A 65 kg person receives a 35 mrem dose from one x ray that exposes 25% of the patient's body
A spring-loaded pellet gun is designed to fire 3.50 g projectiles horizontally at a speed of 39.1 m/s. What maximum force is required to load the gun
An automobile travels on a straight road for 44 km at 49 km/h. What is the average velocity (in km/h) of the car during this 88 km trip? (Assume that it moves in the positive x direction.)
A beam of white light is passed through a prism at an angle of 30o and separated into a spectrum. What is the index of refraction for each color
An air bubble of 10 cm^3 is created at bottom of a lake, where the temperature is 5 degree celsius and is 100 m deep. what is the pressure at the bottom
A 1245-N uniform beam is attached to a vertical wall at one end and is supported by a cable at the other end. A W = 1955-N crate hangs from the far end of the beam.
Illustrate which plot best represents the total linear acceleration of the ladybug as a function of time? (t = 0 is the instant the turntable begins to accelerate.)
One can not align the apparatus to eliminate entirely the effects of the Earth's magnetic field. calculate the component of the earth magnetic field perpendicular to the entering electron beam
A 120g ball moving at 0.50 m/s in the + x direction is subject to a 0.25 N force in the - y direction for 2.5 s, Find the balls final speed
A 2kg ball traveling to the right with a speed of 4 m/s collides with a 4 kg ball traveling to the left with a speed of 2 m/s. The total momentum of the two balls after the collision is what.
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