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The active element of a certain laser is an ordinary glass rod 19.5 cm long and 1.37 cm in diameter. If the temperature of the rod increases by 75.4°C, calculate its increase in length. (Use 9.0×10-6 °C-1 for the coefficient of linear expansion for glass. Use this value to find the coefficient of volume expansion in the later parts of the problem.)
Calculate its increase in diameter.
Calculate its increase in volume.
Suppose that the displacement of an object is related to time according to the expression x = Bt2. What are the dimensions of B?
A Carnot engine operates with a cold reservoir temperature of 194 K and has an efficiency of 74.3%. What is the temperature of the hot reservoir
What is the coefficient of the kinetic friction of the tires and pavement.
Three light bulbs each with a resistance of 50W, are connected in series to a 100 V power supply, find the current flowing through the third light bulb
A particle with a positive charge q= 8.6x10^-6C and a mass m= 0.45g moves with velocity v = 8m/s parallel to a wall. Find the sign and magnitude of the magnetic field
a 760 kg light weight helicopter ascends from the ground with an acceleration of 2.5m/s^2. what is the work done by the lifting force
A charged line of linear charge density ? has been bent into a circular arc of radius r that makes an angle ? with its center. (A). Find the magnitude of the electric field at the center of this arc. (Does your result make sense, what should it be..
A bicyclist rides 3.19 km due east, while the resistive force from the air has a magnitude of 8.83 N and points due west. Find the work done by the resistive force during the round trip
A capillary tube is being used to measure the viscosity of a Newtonian liquid, Estimate the viscosity coefficient for the liquid if a pressure of 2.5 kPa is required to maintain a flow rate of 1 kg/s
A 2 kg object attached to a spring moves without friction (b = 0) and is driven by an external force given by the expression F = 4.60sin (2pi*t), where F is in newtons and t is in seconds. The force constant of the spring is 20.0 N/m.
A system of 1219 particles, each of which is either an electron or a proton, has a net charge of -6.640×10-17 C. How many protons are in this system (exactly)
The resistance of a copper wire of length L meter is 0.1 ohms. If the diameter of the wire is 0.045cm, find out its specific resistance.
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