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the volume of an ideal gas changes from .40 to .56 cm3 although its pressure remains constant at 50000 Pa. what work is done on the system by its environment?
Imagine holding an air-filled 2 L soda bottle (V = 2000 cm3) underwater. You have used a scale to determine that the mass of the soda bottle is mbottle = 50 g. what force is required to hold it underwater
A spring of stiffness 25 kN m-1 is compressed by an initial load of 5 kN, gradually applied, What is the total work done on the spring
What is formula for the acceleration a of the cart in terms of the tension T, and its mass M? make use of the two equations you found above to eliminate T to give the acceleration of the cart in terms of M, m and g. Compute the numerical value for..
As a bar magnet moves toward a 150-turn coil, the magnetic field (which is perpendicular to the plane of the coil) changes from 0.25 T to 0.53 T in 0.3 s. find the magnitude of the induced current in the coil
Two loudspeakers emit 400Hz notes. One speaker sits on the ground. The other speaker is in the back of a pickup truck, What is the truck's speed in m/s
Two resistors, 48.8 and 60.5?, are connected in parallel. The current through the 60.5-? resistor is 3.72A, What is the total power supplied to the two resistors
During a process, 21.6 MJ of heat is added to a closed system. If the internal energy is increased by 59.6 MJ: How much work in Btu was done, Was this work done on or by the system
assume a bar 2 m long expands 0.6 cm when heated. By how much will a bar 100 m long of the same material expand when similarly heated.
On a perfect fall day, you are hovering at low altitude in a hot-air balloon, accelerated neither upward nor downward. What is the weight of the displaced air
Two lenses, separated by a distance of 22.1 cm, are used in combination. The first lens has a focal length of +26.0 cm; the second has a focal length of -15.0 cm. What is the final image distances relative to the second lens
How high is the top of the ski lift relative to base.
Lead has a latent heat of fusion of 2.32x104 J/kg, a specific heat of 128 J/(kg K), and a melting point of 228°C. Calculate heat needed to melt the bullet
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