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An inexperienced hunter shoots at a squirrel sitting in a tree. The squirrel is sitting on a branch that is 22 m above the gun barrel, and 85 m away as shown. The 22 caliber bullet leaves the gun barrel at a speed of 250 m/s, and the hunter aims directly at the squirrel.
(a) Write the initial velocity of the bullet in vector form.
(b) How long does it take the bullet to reach the same horizontal position as the squirrel?
(c) Fortunately for the squirrel, the hunter misses. Calculate how close the bullet came to the squirrel when it passes by. (In other words, find the vertical displacement between the squirrel and bullet when the horizontal position of the bullet and squirrel are the same).
A 68-kg person on skis is going down a hill sloped at 30° from the horizontal. The coefficient of friction between the skis and the snow is 0.11. What would be the magnitude of acceleration.
An object placed on an equal-arm balance scale requires 12 kg to balance it. When object is placed on a spring scale, the spring scale reads 12 kg.
A 318 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 624 mmHg. compute the moles of Ar present.
Two cesium-133 atomic clocks differ by one second in 6000 years. Assume one of the clocks gains one second in six thousand years, approximately what is the change in the number of oscillations of the light each second?
If the water in the river is flowing at 3.0 m/s, explain how long does it take the boat to make a round trip consisting of a 250 m displacement downstream followed by a 250 m displacement upstream?
A spring stretches 4.1 cm when a 11 g mass is hung from it. If a total mass of 25 g attached to this spring oscillates in simple harmonic motion,how to calculate the period of motion.
The jumping squirrel. A squirrel wants to jump from a point A on a branch of a tree to a point B on another branch. The horizontal distance from A to B is x = 5 ft, and the vertical distance is y = 4 ft. If the squirrel jumps with an initial speed..
A point charge Q is trapped at the center of a thin-walled hollow conductive sphere of radius R, How much charge will collect on the inside surface of the hollow sphere
Your expression should give 3.0 m/s for and your answer to part A for theta. Express your answer in terms of theta. Sketch a graph of v versus theta for one complete revolution.
If a woman lifts a 20.0 kg bucket from a well and does 6.00 kJ of work, how deep is the well? Suppose that the speed of the bucket remains constant as it is lifted.
A 1.0 mCi source of Phosphorus called P-32, a beta emitter, is imlanted in a tumor where it is to administer 36 Gy. The half-life is 14.3 days and 1 mCi delivers about 10 mGy/min/ Approximately how long should the source remain implanted?
Let's build a helium atom. Start with a nucleus with 2 protons and 2 neutrons, Calculate the energy gained by the system constructing this atom
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