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A 5-kg piston in a cylinder with diameter of 100 mm is loaded with a linear spring and the outside atmospheric pressure of 100 kPa. The spring exerts no force on the piston when it is at the bottom of the cylinder and for the state shown, the pressure is 400 kPa with volume 0.4 L. The valve is opened to let some air in, causing the piston to rise 2 cm. Find the new pressure.
What if, instead, you threw the flashlight away from you to change your momentum toward the spacecraft. If the flashlight had a mass of 2.00-kg and traveled at a speed of 10.0 m/s, how long would it take you to get back
A projectile (mass = m) is launched vertically upward with initial velocity v. When it has reached a height h above its launch position, it is still moving upward, but at that moment it explodes into two pieces. For what time interval was this impa..
Cations are removed from the exchange complex of a 1 kg oven-dry soil sample by ammonium (NH4+) substitution. What is the cation exchange capacity of the soil
An ideal (Carnot) engine has an efficiency of 43 percent. If it were possible to run it backward as a heat pump. Compute what would be its coefficient of performance
A person on earth notices a rocket approaching from the right at a speed of 0.78c and another rocket approaching from the left at 0.58c. What is the relative speed between the two rockets, as measured by a passenger on one of them?
A copper rod has a length of 1.5 m and a cross-sectional area of4.0×10-4 m2. What is the mass of ice per second that melts
a charge of 5.50 x 10-9 c and a charge of -3.00 x 10-9 c are separated by a distance of 60.0 cm. find the position at
The intensity of sunlight at the earth's surface is 1400W/m2, and the average wavelength is 550 nm. How many photons per second are absorbed with a perfect blackbody surface of area 1.25m2 perpendiculars to the sun's rays?
The resistance of a bagel toaster is 14 ?. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster
A 5.0 A current is set up in a circuit for 6.0 min by a rechargeable battery with a 6.0 V emf. By how much is the chemical energy of the battery reduced
You plan to throw stones by using a sling of length 0.5 m which you whirl over your head. Suppose you wish to throw a stone a distance of 27 m. What must be the centripetal acceleration of the stone
A concert loudspeaker suspended high off the ground emits 32W of sound power, What is the sound intensity level at the position of the microphone
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