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an excited argon ion in a gas discharge radiates a spectralline of wavelength 450 nm the transition from the excited to
a wire carries a current of 0651 a this wire makes an angle of 566deg with respect to a magnetic field of magnitude
a single lewis structure for the phosphate ion assuming that the phosphorus atom can expand its octet such that the
a taut string forwhich mu500x10-2 kgmis under a tension of 800 n how much power must be supplied to the string to
a block is connected between two springs on a frictionless horizontally level track the other end of each spring is
a diverging lens with a focal length of -14 cm is placed10 cm to the right of a converging lenswith a focal length of
how many grams of potassium permanganate are required to prepare 2 qt of 1750 solution of potassium
a crate with a weight of 50n rests on a horizontal surface a person pulls horizontally on it with a force of 10n and it
a spring is attached to an overhead beam if you put a mass of 17 0 g on it and it proceeds to stretch a distance of 7
when a capacitor battery and resistor are connected in series does the resistor affect the maximum charge stores on the
two equal charges q are separated by a distance d one of the charges is released and moves away from the other due to
in a location where the speed of sound is 330 ms a 2000 hz sound wave impinges on two slits 30cm aparta at what angle
you connect a number of identical light bulbs to a flash-light battery a what happens to the brightness of each bulb as
an ice cube of uniform density 100 cm on a side is floating inpure water a student pushes the cube down slightly with
two solid sphere simultaneously start rolling from rest downan incline one sphere has twice the radius and twice the
a typical incandescent lightbulb has a filament temperature ofapproximately 3143 k at what wavelength is the intensity
a diffraction grating with 1000 slitscm is oriented parallel to the y-axis and its center is located onthe x-axis at x
using enthalpies of formation calculate the quantity of heat produced when 325 g of butane is completely combusted in
two 120-v light bulb ones 25-w and one 200-w were connected in series across a 240-v linenbsp it seemed like a good
consider an organ pipe that is closed at one end and open at theother this pipe has resonant frequencies of 420 hz and
three pure compounds are formed when 100 g samples of element x combine with respectively 0472 g 0315g and 0944 g of
a how can a rocket change direction when it is far out inspace and is essentially in a vacumb a bungee jumper
an image of the moon is focused onto a screen using a converginglens of focal length f 343 cm the diameter of themoon
a 611g sample of a cu-zn alloy reacts with hcl acid to produce hydrogen gas if the hydrogen gas has a volume of 126l at
a woman stands between a vertical mirror 080 m tall and a distant tree whose height is h she is 285 m from the mirror