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A rifleman fires a round with a muzzle velocity of 300 m/s from a height of 1.5 m at a target on a wall 200 m away and 3 m high. What angle (theta) should he fire the rifle at to hit the target?
A student doing an experiment pours 0.160kg of heated copper shot into a 0.355-kg aluminum calorimeter cup containing 0.240kg of water. find the initial temperature of the shot
The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. Evaluate how far does he slide?
In order to drink from your glass you must first need to lift it to your mouth. As you begin to lift your 0.20kg glass of water it is accelerating upwards at 0.090 ms-2. What is the net force acting on the glass
A large wooden turntable in the shape of a flat disk has a radius of 2.25m and a total mass of 135kg, Find the angular speed of the turntable after the parachutist lands
An electron is accelerated from rest by the potential difference of 461 V. It then enters a uniform magnetic field of magnitude 184 mT with its velocity perpendicular to the field. Calculate (a) speed of the electron and (b) radius of its path in ..
A parallel-plate capacitor with plates of area 600 cm2 is charged to a potential difference V and is then disconnected from the voltage source. What is the charge Q on the positive plate of the capacitor
The power dissipated in a series RCL circuit is 66.2 W, and the current is 0.547 A. The circuit is at resonance. Determine the voltage of the generator
The range of human hearing extends from approximately 20 Hz to 20,000 Hz. Find the wavelengths of these extremes at a temperature of 0°C
The space shuttle, in a 300km high orbit needs to perform anexperiment that has to take place well away from the spacecraft. what is the angle of the rope as measured from a line drawn fromthe center of the earth though the payload
The position of a particle moving along the x-axis depends on time as x(t) = 30 t2 - 4 t3 where x is in m and t in s. At what time does the particle reach its maximum positive x position
In famous magician trick. The magician lies on bed of nails and a sledge hammer is used to pound on an anvil on her chest. The nails will not pierce her skin. Explain why?
The intrinsic impedance and the wavelength of a uniform plane wave traveling in an unknown dielectric at 3 GHz are measured to be ~ 194 Ω and ~ 5 .14 cm respectively. Determine the constitutive parameters (i.e. εr, and μr) of the material.
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