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Steam enters a compressor at p1= 6 bar, T1= 300 oC and exits at p2= 10 bar. The work on the system is measured as 200 kJ per kg of water vapor flowing. Determine the isentropic turbine efficiency.
A converging lens (f1 = 24.0 cm) is located 56.0 cm to the left of a diverging lens (f2 = -28.0 cm). How far is the object from the converging lens
Heather and Jerry are standing on a bridge 46 above a river. Heather throws the rock straight down with a speed of 20. Jerry, at accurately the same instant of time, throws a rock straight up with the same speed. Overlook air resistance.
A box of mass 5.8 kg is accelerated from rest by the force across a floor at a rate of 2.0 m/s2 for 8.2 s. Find the net work done on the box.
An 75.0-N crate of apples sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 30.0° to the ground. What is the direction of the contact force
In the overhead view of Fig. 9-54, a 300 g ball with a speed v of 6.0 m/s strikes a wall at an angle ? of 30°, determine the impulse on the ball from the wall
1.a 0.089 kg bullet is traveling at 338 ms when it strikes a block of wood. if the bullet penetrates 0.74 m into the
A string is clamped at both ends and tensioned until its fundamental vibration frequency is 95Hz. what is the lowest frequency at which it will vibrate
When laser light of wavelength 633.3nm passes through a diffraction grating. thef irst bright spots occur at +- 18.4 degree from the central maximum, At what angle do the second bright spots occur
During a lunar eclipse, the Moon, Earth, and Sun all lie on the same line, with the Earth between the Moon and the Sun. Calculate the force exerted on the Earth by the Moon
Cobalt has a saturation magnetization of 1.4 times 106 A/m, and an atomic volume of 6.7 cm3/mole. (a) What is the magnetic dipole moment of each cobalt atom in Bohr magnetons?
An object at rest in a coordinate frame suddenly explodes into three parts of equal mass m. Two parts move away at right angles to each other and with equal speeds |v|.
A car in stop-and-go traffic starts at rest, moves forward 19 in 8.0 , then comes to rest again. The velocity-versus-time plot for this car is given in the figure. What distance does the car cover in the first 4.0 seconds of it motion?
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