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A gas in a cylinder is held at a constant pressure of 2.20×10^5 Pa and is cooled and compressed from 1.70m^3 to 1.40m^3. The internal energy of the gas decreases by 1.15×10^5 J.
Find the work done by the gas.
W=
Find the amount of the heat that flowed into or out of the gas
|Q|=
State the direction (inward or outward) of the flow.
inward
outward
A locomotive accelerates a 25-car train along a level track. Every car has a mass of 7.6 ? 104 kg, What is the tension in the coupling between the first car and the locomotive
The basic concepts in optics.
A man of mass 45 kg. is standing on a uniform rolling board of length 10 m. and mass (mb = 30 kg). how far does the board retreat
A 1840 W. radiant heater is constructed to operate at 115 V. What is the resistance (in ohms) of the heating coil
A steel piano wire vibrates in its first harmonic mode with a fundamental frequency of f1 = 410 [Hz]. How many harmonics can be heard by a person
A cannon ball (m=.7 kg) traveling at 200m/s hits and is impeded into a 400 kg car. If the car was initially at rest, what will be its velocity after the impact
The length of a simple pendulum is 0.65 m and the mass of the particle (the "bob") at the end of the cable is 0.26 kg. What is the angular frequency of the motion
At rest, a car's horn sounds at a frequency of 480 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 470 Hz. What is the speed of the car?
An object weighing 307 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 270 N. Immersed in oil, the object weighs 282 N. compute the density of the object.
1. identify three specific challenges to making direct measurements in the fields of astronomy chemistry physics or
A photon has the same momentum as an electron moving with a speed of 1.83×105 m/s. What is the wavelength of the photon
Find an expression for the electric potential at the center. A proton is released from rest in a uniform electric field of magnitude 1.20×10^5 N/C. Find the speed of the proton after it has traveled.
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