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A spherical mirror is polished on both sides. When used as a convexmirror, the magnification is +1/7. What is the magnification whenused as a concave mirror, the object remaining the same distancefrom the mirror? Give your answer to three significant figures.
A beam of nuclei is used for cancer therapy. Each nucleus has an energy of 128 MeV, and the relative biological effectiveness (RBE) of this type of radiation is 16. How many nuclei are in the beam
A spacecraft descends vertically near the surface of Planet X. An upward thrust of 26.0 from its engines slows it down at a rate of 1.20, find the spacecraft's weight near the surface of Planet X
A fly wheel with a radius of 0.400m starts from rest and accelerates with a constant angular acceleration of 0.300 rad/sec^2. find the resultant acceleration of a point on its rim after 2 sec
question1as at rest two trains has sirens that release a frequency of 300 hz. the trains travel toward one another and
In February 1955, a paratrooper fell 370 m from an airplane without being able to open his chute but happened to land in snow, find the magnitude of the impulse on him from the snow
For safety in climbing, a mountaineer uses a nylon rope that is 60 m long and 1.0 cm in diameter. Find its Young's modulus
The drawing shows the front and rear sprockets of a bicycle. Assume the chain does not slip or stretch. How much time is required to double the speed of the rear sprocket
In order to calculate the number of ways of arranging a given amount of energy in a tiny block of copper, How many atoms are in the copper block
You are piloting a spacecraft whose total mass is 1170 kg and attempting to dock with a space station in deep space. How long should you sustain the firing of the retro-rocket
Two forces are applied to a car in an effort to move it, as shown in the following figure, where F1 = 415 N and F2 = 354 N. What is the resultant of these two forces
An air-track glider is attached to a spring. The glider is pulled to the right and released from rest at =0 . It then oscillates with a period of 1.50 and a maximum speed of 58.0 . A What is the amplitude of the oscillation? B What is the glider's po..
Two converging lenses, each of focal length 17.0 cm, are placed 39.2 cm apart, and an object is placed 30.0 cm in front of the first lens. Where is the final image formed
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