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A student decides to measure the muzzle velocity of a pelletshot from his gun. He points the gun horizontally. He places atarget on a vertical wall a distance x away from the gun. thepellet hits the target a vertical distance below the gun.
(a) Showthat the position of the pellet when travelling through the air isgiven by y=Ax^2, where A is a constant.
(b) Express the constant Ain terms of the initial (muzzle) velocity and the free-fallacceleration.
(c) If x=3.00m and y=0.210m, what is the initial speed of the pellet?
A standard 100 W (120 V) lightbulb contains a 7.40 cm-long tungsten filament. What is the diameter of the filament
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15 O and 131 I are isotopes used in medical imaging 15 O is a beta-plus emitter, 131 I a beta-minus emitter. What are the daughter nuclei of the two decays?
If an object on a horizontal, frictionless surface is attached to a spring, displaced, and then released, it will oscillate. If it is displaced 0.180 m from its equilibrium position and released with zero initial speed, then after 0.950 s its disp..
You are designing the section of a roller coaster ride shown in the figure. Previous sections of the ride give the train a speed of 11.9 m/s at the top of the incline, FIND the minimum radius you can use for the semi-circular hump
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You need to connect a 43k\Omega resistor and one other resistor to a 110 \rm V power line. what should be the value of the unknown resistor
A copper wire has a resistance of 29 ? at 19° C. An aluminum wire has three times the length and two times the radius of the copper wire. What is the resistance of the aluminum wire at 19° C
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