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A child of mass 15 kg is sitting on a sled while hisbrother pulls it up a snowy hill at steady speed. The hillmakes a 30o angle with the horizontal, and the brotheris pulling on a rope that slants upward from the sled at a20o angle. Find the tension in the rope.
An artificial earth satellite has a circular orbit of radius 7.10 multiply.gif 106 m in an equatorial plane. Compute the (constant) speed of the satellite
Studies of the relationship of the sun to our Galaxy- The Milky Way - Have revealed that the sun is located near the outer edge of the galatic disc, what is the period of the sun's galactic motion
a 1.0-m3 object floats in water with 20% of it above thewaterline. What does the object weight out of water
A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed of 14.0 m/s. With what speed and angle does the stone land
The bones of a saber-toothed tiger are found to have an activity per gram of carbon that is 14.70 of what would be found in a similar live animal. How old are these bones.
A billiard ball is moving east at 3.0 m/s. A second, identical billiard ball is shot west at 1.8 m/s. find the speed and direction of the first ball after the collision
a proton moves in a circle with a speed of 280 m/s through a uniform magnetic field of 2t directed perpendicular to the circular path. compute the orbital radius of the proton
two 26 kg spheres are fixed in place on a y-axis one at y 0.45 m and the other at y -0.45 m. a 10 kg ball is then
In a certain RLC circuit, the RMS current is 6.42 A, the RMS voltage is 235 V, and the current leads the voltage by 55.6°. Calculate the average power dissipated in the circuit
What is this value? In this state, the interference pattern still appears showing that each individual electron can interfere with itself.
in 1910 rutherford performed a classic experiment in which he directed a beam of alpha particles at a thin gold foil.
An inquisitive physics student, wishing to combine pleasurewith scientific inquiry, rides on a rollercoaster sitting on abathroom scale. What does the scale read at that point
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