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The magnitudes of the four displacement vectors shown in the drawing are A = 15.0 m, B = 10.0 m, C =14.0 m, and D = 25.0 m. Determine the (a)magnitude and (b) direction for the resultant that occurs when these vectors are added together. Specify the directionas a positive (counterclockwise) angle from the +x axis.
A hydrogen atom is in its first excited state n=2. Using the Bohr theor yof the atom, calculate linear momentum of the electrons
A parallel-plate capacitor has square plates of edge length1.9 cm and a plate spacing of0.030 mm. If the gap between the plates is a vacuum, what is the capacitance?
Consider a simple spherical wave, with omega/k=c
For N2 at 25oC and 1.00 atm calculate the number of collisions per second made by one molecule; the number of collisions per second per cubic centimeter; compare these values to N2 at 25oC and 1.0*10^-6 torr using the values already calculated Show a..
A spacecraft drifts through space at a constant velocity. Itthen turns on a jet that provides a constant force in the direction perpendicular to the direction of its initial velocity. What is the shape of the trajectory that the space craft follows..
After a plant or animal dies the 14C content decreases with a half-life of 5730 years. what is the age (in years) of the ancient site
A 12-V battery is connected in series with a switch, 6.0-ohms resistor and coil. What energy is stored in the coil when the current is 2.0 A
a 384 kg piano slides 3.6 m down an 27deg incline and is kept from accelerating by a man who is pushing back on it
Miles Tugo is camping in Glacier National Park. In the midst of a glacier canyon, he makes a loud holler. He hears an echo 1.22 seconds later. How far away are the canyon walls
If a star has a peak emission in the infrared par of the spectrum, is it hotter or cooler than the Sun? What color would the star be
an air-track glider attached to a spring oscillates between the 9.00cm mark and the 54.0cm mark on the track. the
A stone tied to the end of a string is whirled around in avertical circle of radius R. Find the critical speed below which the spring would become slack at the highest point
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