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A neodymium-glass laser emits short pulses of high-intensityelectromagnetic waves. The electric field of such a wave has an rmsvalue of Erms = 6.50 x 109 N/C. What is the average power ef each pulse that passes through a 2.70 10-5 m2 surface perpendicularto the beam?
a compact disc undergoes 30 revolutions as it accelerates uniformly from rest to 5 revolutions per second.what is the
An object is 7.94 cm from the surface of a reflective spherical Christmas-tree ornament 7.8 cm in diameter. What is the position of the image
in our analysis of energy costs in transportation we focussed on the trip force associated with stopping and starting
a parallel plate capacitor has a capacitance of 6.7 microf when filled with a dielectric. the area of each plate is 1.4
Three moles of an ideal monatomic gas are at a temperature of 340 K. Then 2701 J of heat is added to the gas, What is the final temperature of the gas
A frictionless, vertical wire has two metal beads on it. The beads are held 30 cm apart by horizontal magnets, If the two beads each have a mass of 49.7 g, what is the kinetic energy of the second immediately after impact
Let us use the uncertainty principle to (very roughly) estimate the size of a hydro- gen atom. Picture the hydrogen atom as an electron orbiting a proton at close to the speed of light.
Consider a parallel-plate capacitor with an area of 0.9 cm2, with a plate spacing of0.19 mm, and filled with quartz. At what voltage will this capacitor exhibit dielectric breakdown?
An air-track glider attached to a spring oscillates with a period of 1.50s . At t=0s the glider is 4.50cm left of the equilibrium position, obtain the phase constant
A steel rod is 3 cm in diameter at 25 C. A brass ring has an interior diameter of 2.992 cm at 25 C. At what common temperture will the ring just slide into the rod?
a car is traveling due north at 19.3m/s. find the velocity of the car after 7.03 s if its acceleration is 1.30m/s^2 due north
An oxygen bubble at the bottom of a lake 20. m deep has a volume of 1.20 cm^3, calculate the initial pressure inside the bubble at the bottom of the lake
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