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A superhero is running toward a skyscraper to stop a villain from getting away. As he is moving, he looks up at the top of the building and his line of sight makes a 33.0o angle with the ground. After having moved 350 m, he looks at the top of the building again, and notices that his line of sight makes a 52.0o angle with the horizontal. How tall is the skyscraper?
Illustrate what was the magnitude of the centripetal acceleration of the rock when it was on the string? (b) What was its speed when it was on the string?
A 2.00-m-long rope has a mass of 0.100 kg, What is the frequency of the oscillator if the power transmitted is 120 W
An object is thrown upwards with a speed of 13 m/s. How long does it take to reach a height of 4.0 m above the projection point while descending?
A uniform rod rotates in a horizontal plane about a vertical axisthrough one end. The rod is 6.00?m long,weighs 11.0?N, and rotatesat 210 rev/min clockwisewhen looked at from above.
a star of mass 2.0 1031 kg that is 4.4 1020 m from the center of a galaxy revolves around that center once every 1.8 x
A tube of radius 5cm is connected to tube of radius 1 cm as shown above. Water is forced through the tube at a rate of 10 liters/min. The pressure in the 5 cm tube is 1×10^5 Pa. The density of water is 1000kg/m3. Suppose that the water is no visco..
An elevator weighing 2500 N ascends at a constant speed of 8.0 m/s. How much power must the motor supply to do this
A Na+ ion moves from inside a cell, where the electric potential is -68 mV, to outside the cell, Does its energy increase or decrease
The CG of a 150kg polar bear standing on all fours is 80 cm from her for paws and 100cm from her hind paws. Discover the force the ground exerts on each of her paws.
two cylinders are made of the same unknown material. the first has a radius r1 resistance r1 and mass m1. the second
A fox fleeing from a hunter encounters a 0.615 m tall fence and attempts to jump it. By how much does the fox clear the fence
Two point charges are on the y-axis, one of magnitude 3.0 ? 10-9 C at the origin and a second of magnitude 6.0 ? 10-9 C at the point y = 25 cm
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