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The minimum take off speed for an airplace is 75 m/s. What minimum acceleration is required if the plane must leave a runway flank of 1050 meters? Assume plane starts at rest at one end of runway.
A box weighs 190 N on earth., What is its mass (kg) on Jupiter and What is its weight (N) on Jupiter where free-fall acceleration is 25.9 m/s^2
Two carts have a compressed spring between them and are initially at rest. One of the carts has total mass, including its contents, of 7.0 kg, and the other has total mass of 5.0 kg. If the 5.0 kg cart is moving at 3.0 m/s after the spring is allowed..
Find the frequency in terahertz of visible light with a wavelength of 485 nm in vacuum. What is the wavelength in centimeters of electromagnetic microwave radiation whose frequency is 7.61 GHz?
A camper is trying to start a fire by focusing sunlight onto a piece of paper. The diameter of the sun is 1.39 × 109 m, What is the area of the sun's image on the paper
A 21.5-g bullet is fired from a rifle. It takes 2.15 10-3 s for the bullet to travel the length of the barrel, and it exits the barrel with a speed of 620 m/s. find the average net force exerted on the bullet
A lens with a refrective index of 1.5 is coated with a material of refractive index of 1.2 in order to minimize the reflection. what is the thinnest possible coating
Two identical resistors are connected in parallel across a 27-Vbattery, which supplies them with a total power of 6.5 W. While thebattery is still connected, one of the resistors is heated so thatits resistance doubles.
A satellite in a circular orbit around the earth with a radius 1.011 times the mean radius of the earth is hit by an incoming meteorite. Calculate the amount of that work converted to heat
Consider N atoms confined on a surface of area A at temperature T. The atoms form a two-dimensional (2D) gas of classical, non interacting particles.
The rms speed of a sample of gas is increased by 3 percent. What is the percent change in the temperature of the gas? What is the percent change in the pressure of the gas, assuming its volume is held constant?
Two parallel wires 10 cm apart carry currents of 18 A. What is the magnetic force between two wires for both case
Consider a star of mass M=10Msun, composed entirely of fully ionized C-12. Its core temperature is 6*10^8K. a. What is the mean particle mass mbar in units of m(hydrogen)?
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