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A 2-m3 vessel contains air at 40oC and 236 kPa. The vessel is fed with fresh air until the air inside the vessel reaches 93oC and 1 MPa.
(a) Calculate how much air was added to the vessel.
(b) If the air inside the vessel is allowed to cool to 17oC, what is the pressure in the vessel?
A force of 7 pounds is required to hold a spring stretched 0.5 feet beyond its natural length. How much work (in foot-pounds) is done in stretching the spring from its natural length to 0.9 feet beyond its natural length.
A capacitor is connected across the terminals of an ac generator that has a frequency of 370 Hz and supplies a voltage of 15 V. When a second capacitor is connected in parallel with the first one, the current from the generator increases by 0.27 A. D..
A 2000kg vehicle is travelling down the road at 20m/s (45 mph) when it reaches an intersection. Between rubber and dry asphalt, the coefficient of friction is 0.80. What is the minimum distance necessary for the car to stop.
A child is trying to throw a ball over a fence. She gives the ball an initial speed of 8.0 m/s at an angle of 40° above the horizontal. How far is the child from the fence
It then increases it's speed at the rate of 1.55 m/s2. Find out the magnitude of acceleration under these new conditions. Answer in units m/s2.
find the minimum size of the snowshoes needed.
The plane of a 6.0 cm × 8.0 cm rectangular loop of wire is parallel to a 0.16-T magnetic field. The loop carries a current of 6.8 A, What torque acts on the loop
calculate the mass and density of methane gas contained at 1000 psia and 68 degrees Farenheit in a cylinder with volume 3.20 cu ft
An automobile has a vertical radio antenna 1.00 m long. The automobile travels at 56.0 km/h on a horizontal road where Earth's magnetic field is 50.0 µT, Calculate the magnitude of this induced emf
A proton is confined to a nucleus that has a diameter of 8.3 × 10-15 m. what is the minimum uncertainty in its momentum
What is the total dose equivalent of 1 rem of fast neutrons, 0.5 rad of low energy betas, 25 ergs per gram of thermal neutrons, and 150 mR of diagnostic x-rays
An AM radio transmitter broadcasts 47.0 kW of power uniformly in all directions, What is the maximum electric field strength at this distance
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