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A cosmic-ray proton in interstellar space has an energy of 25.0 MeV and executes a circular orbit having a radius equal to that of Jupiter's orbit around the Sun (7.78 1011 m). What is the magnetic field in that region of space?
In brief explain the changes that the Sun will go through after it exhausts its core hydrogen. Be sure to describe both the changes occurring in the Sun's core and the changes visible from outside the Sun. What do we mean by the stages we call hydrog..
A parallel-plate air capacitor has a capacitance of 920 pF. The charge on each plate is 2.55 µC. How much work is required to double the separation?
A railway truck A of mass m and a second railway truck B of mass 4m are moving in opposite directions on a smooth straight horizontal track when
A 1660-kg car travels 2.6 km up an incline at constant velocity. What is the net work done on the car
The block is pulled to stretch the spring 10cm, and then released. a short time later, as the block passes through the equilibrium position, its speed is 1.0m/s. what's the blocks period of oscillation?
High-altitude mountain climbers do not eat snow, but always melt it first with a stove. Calculate the energy absorbed from a climber's body if he eats 0.70kg of -15?C snow which his body warms to body temperature of 37?C
A 63 kg girl weighs herself by standing on a scale in an elevator. What is the force exerted by the scale while the elevator is descending at a constant speed of 10.0 m/s.
to focus a camera on objects at different distances the converging lens is moved toward or away from the film so a
A cubical block of ice 46.0 cm on a side is placed on a level floor over a speck of dust. Discover the location of the image of the speck as viewed from above. The index of refraction of ice is 1.309.
A float plane lands on a river. Assume the velocity of the airplane relative to the air is 25 m/s. Calculate the velocity of the plane just before it lands relative to the water.
A spring has a spring stiffness constant, K, of 430 N/m. Find how much must this spring be stretched to store 50 Joule of potential energy
An amusement park ride consists of a swing hanging from a chain attached to a spinning mechanism. The swing forms a horizontal circle of a radius 5.0 m and the chain makes an angle of 25 degrees from vertical as shown in the diagram. If the mass of t..
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