Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A De Laval nozzle has a compression section, where the propellant is compressed (and thereby accelerated) as it moves towards a narrow section (the throat). After the throat, the nozzle widens out again. Here's a reference image.
According to what I've been reading, the propellant is moving at subsonic speeds before the throat, and is accelerated to supersonic speeds as it passes the throat. Furthermore, the propellant continues to accelerate as the nozzle expands again. What I don't understand is: what force continues to accelerate the propellant after it passes through the throat?
I've been trying to imagine a single molecule of propellant and thinking about the forces from the particles around it, but can't come up with a force "pushing" from upstream (because it's moving at supersonic speeds), or "pulling" from downstream (because at the minimum there would be 0 opposing force in a vacuum, but certainly not a negative attractive force from downstream). Any ideas?
A major-league pitcher can throw a baseball in excess of 44.2m/s. If a ball is thrown horizontally at this speed, how much would it drop by the time it reaches the catcher who is 16.10 m away from the point of release.
A 9300 kg boxcar traveling at 20m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 10 m/s. What is the mass of the second car.
In a mass spectrometer, a singly ionized 24Mg ion has a mass equal to 3.983 10-26 kg and is accelerated through a 2.80-kV potential difference. Find the radius of curvature of the ion's orbit
A rectangular slab (43m x 12m x 2.5m) of slate rests on a 26 degree incline. The density of the slab is 3.2 x 10^3 kg/m^3. The coefficient of static friction between the slab & the plane is 0.36. Calculate the component of the slab's weight acting ..
hen an object is placed 69.0 cm from a certain converging lens, it forms areal image. When the object is moved to 37.0 cm from the lens, the image moves26.0 cm farther from the lens.Find the focal length of this lens (cm)
a 120-m long steel wire has a coefficient of linear exspansion of 11x10-6 celcius. give its change in length as the
A sodium atom (Z = 11) contains 11 protons in its nucleus. Strictly speaking, the Bohr model does not apply, as the neutral atom contains 11 electrons instead of a single electron. but, we can apply the model to the outermost electron as an approxima..
It's generally okay to ignore relativistic effects when a particle's speed is less than 1.0% of the speed of light, Find the accelerating potential difference that will bring electrons to that speed, starting from rest
on a hot day a house is kept cool by an air conditioner. The outside temperature is 32 degrees celsius and the inside temperature is 21 degree celsius. what is the mechanical power that it requires to hold the inside temperature constant
find the charge on the block. A very small charged block with a mass of 2.05g is placed on an insulated, frictionless plane inclined at an angle of 17° with respect to the horizontal.
A friend in a spaceship travels past you at a high speed. Hetells you that his ship is 21 m longand that the identical ship you are sitting in is 15 m long. According to your observations, how long is your ship
A 64 Ω resistor, an 7.4 uF capacitor, and a 38 mH inductor are connected in series in an ac circuit. Find the impedance for a source frequency of 300 Hertz
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd