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In a period of 0.9 second, 5 x 1023 nitrogen molecules strike a wall of area 7.4 cm2. If the molecules move at 290 m/s and strike the wall head on in a perfectly elastic collision, determine the pressure exerted on the wall. (The mass of one N2 molecule is 4.68 x 10-26 kilogram)
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a boat is traveling at 3.1rm ms in the same direction as an ocean wave of wavelength 30 rm m and speed 6.8 rm mrm s. if
Traffic is moving along the highway at 51 km/h on a rainy day. Illustrate what is the minimum coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
Heat engines take input energy in the form of heat, use some of that energy to do work, and exhaust the remainder. Determine the magnitude of the heat the athlete gives off
A spring with a constant of 32N/m is placed on a horizontal smooth surface and a mass of 2.3 kg is pushed against it. What is the velocity of the mass as it leaves contact witht he spring
Two identical guitar strings are stretched with the same tension between supports that are not the same distance apart. The fundamental frequency of the higher-pitched string is 500Hz, and the speed of transverse waves in both wires is 125 m/s. How m..
An electron is located on a pinpoint having a diameter of 6.29 µm. What is the minimum uncertainty in the speed of the electron
Potassium has a work function of 2.21 eV. What is the maximum kinetic energy of electrons escaping from a sample of potassium if photons of frequency 6.00×1014 Hz strike it?
A Ferris wheel rotates at an angular velocity of 0.28 rad/s. Find how long does it take the wheel to come up to operating speed
small ferryboat is 4.00 m wide and 6.00 m long. When a loaded truck pulls onto it, What is the weight of the truck
assume that the positively charged particle starts at point a with an initial velocity in the positive x-direction.
Calculate the net impulse delivered to a 138-kg quarterback initally running at 4.5 m/s if he's hit by a defending player and slowed to a speed of 1.1 m/s
A 2.0cm tall object is located 18.0cm in front of a converging lens with a focal length of 10.0cm. Is it virtual or real
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