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As a result of a chemical spill, benzene is evaporating at the rate of 1 gram per minute into a room that is 6 m * 6 m * 3 m in size and has a ventilation of 10 m3/min.
a- Compute the steady state concentration of benzene in the room.
b- Assuming the air in the room is initially free of benzene, compute the time necessary for benzene to reach 95 percent of the steady-state concentration.
A ball of mass 1.91 kg is dropped from a height y1 = 1.35 m and then bounces back up to a height of y2 = 0.59 m. How much mechanical energy is lost in the bounce
A 1,500kg satellite is placed in an orbit 8,000km above the surface of the Earth. a. What is the gravitational acceleration of the Earth at that altitude? b. What is the speed of the satellite? c. How long does it take the satellite to go around the ..
a ball is thrown upward from the roof of a building, passes the roof going down three seconds later, how fast did the ball strike the ground
A car accelerates from rest at a constant rate of 2m/s2 for 5s. At the end of this time the speed of the car is 10 m/s. How far does the car travel in this time
A parallel-plate capacitor has plates separated by 0.80mm. what is the potential difference between the plates
1 what is the magnitude of the force on a 50 cm 0.500 m long wire carrying 15.0 a at right angles to a 0.005 t 500 g
An automobile suspension involves both leaf springs with stiffness k and shock absorbers resist motion with a force -uv. The system is critically damped. If a car has mass 2000 kg and has shock absorbers with u = 2.5 x10^4 kg/s, how much should the c..
A person swimming underwater sees a lifeguard who is standing in the shallow part of the pool; the water comes up to the lifeguard's waist. In what way does the swimmer see lifeguard's upper body distorted.
Describe the method used to measure the Sun's shadow and in the drawing on page 18 what are the letters b and d used for?
a what is the escape speed on a spherical asteroid whose radius is 510 km and whose gravitational acceleration at the
A lens which is 40.0 cm from an object forms an image of the object on a card 20.0 cm away. Determine what is the focal length of the lens? If the height of the image is .75 cm, what is the height of the object?
The wavelength of the waves in seawater is 4.80 x10-4 m. While the generator is directed downward, an echo reflected from the ocean floor is received 10s later.
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