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1. Air enters a supersonic isentropic diffuser with a Mach number of 3.00, a temperature of 0.00°C, and a pressure of 1.00 × 10-2 MPa. Assuming the air exits with negligible velocity, determine the exit temperature, pressure, and mass flow rate per unit inlet area.
2. Propane at 100. kPa 40.0°C is expanded isentropically through a converging-diverging nozzle that has an exit to throat diameter ratio of 2.00. The propane enters with a negligible velocity but reaches sonic velocity at the throat. Determine the exit temperature, pressure, and Mach number, if
(a) the exit pressure is high enough so that the exit velocity is subsonic and
(b) the exit pressure is low enough that the exit velocity is supersonic.
A ball is dropped from rest at the top of a 6.10 m tallbuilding, falls straight downward and collides inelastically withthe ground, and bounces back. How many bounces can the ball make and still reach a windowsill that is2.38 m above the ground
when it is communicated that light is a transverse wave with respect to the magnetic and the electric fields is it
Suppose the length of a clock's pendulum is changed by 1.000%, exactly at noon one day. What time will it read 24.00 hours later, assuming it the pendulum has kept perfect time before the change? Note that there are two answers, and perform the ca..
A charge of +q is located atthe origin, while an identical charge is located on the xaxis at x = 0.43 m. A thirdcharge of +3q is located on the x axis atsuch a place that the net electrostatic force on the charge at the origin triples, its directi..
(a) What is its kinetic energy in joules? (b) What is the bullet's kinetic energy if its speed is halved?
Find out the relative rates at which clocks go at two different distances r1 and r2 from the center of the earth.
A circular loop of wire 0.2 m in diameter is placed with its normal at an angle of 30° to the direction of a uniform 0.14 T magnetic field. What emf appears in the loop
The seed has a mass of 250 mg., a functional lift-to-drag ratio of 4.0, a lift coefficient under the same conditions of 0.3, and a wing area of 5000 mm2. How long will it take to hit the ground
A balloon inflated with helium (density .2 kg/m^3). If the density of air is 1.3 kg/m^3, what is the bouyant force exerted on the balloon
A couple of astronauts agree to rendezvous in space after hours. Their plan is to let gravity bring them together. Find the his and her initial acceleration
For a 30 degree launch angle, the initial velocity(v0) is 3.12 m/s, the height at which the launcher is shot from has a height(h) of 1.17 m from the ground, Calculate angle the projectile makes with the horizontal just as projectile hits the ground
A 3.0-kg and a 5.0-kg box rest side-by-side on a smooth, level floor. How hard do the two boxes push against each other
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