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Using the principal axes as the axes of a coordinate system, find the tangential component of the stress vector on an arbitrary plane related to the coordinate system. The direction cosine of the normal of the plane is (l, m, n).
A hiker walks such that her initial displacement is . She then changes heading and walks with displacement . What (single) displacement would bring her back to her starting position? East = 0O; positive angles are counter clockwise.
q1. kelli weighs 417 n and she is sitting on a playground swing that hangs 0.44 m above the ground. her mom pulls the
An object is placed in front of a concave mirror with a 21.4-cm radius of curvature. At what distance is the object from the mirror
The electric field midway between two equal but opposite point charges is 713N/C, and the distance between the charges is 17.7cm. What is the magnitude of the charge on each
X-rays with wavelength of0, 71Å eject photoelectrons from a gold foil. The electrons form a circular path of radius r in a region where constant magnetic field B is present. Experiment shows that rB=1.88x10-4 Tesla-m. Discover the maximum kinetic ene..
Flight to Mars. To send a satellite from Earth to Mars, a rocket must accelerate the satellite until it is in the correct elliptical orbit around the sun. What is the semimajor axis of the satellite's orbit
a sphere is placed in a uniform external electric field. accurately draw the vector field lines for the situation when
If the water temperature in the insulated container is found to have increased 2.0°C after 20.0 descents of the falling object, what mass of water is in the container?
Light is emitted from an ordinary lightbulb filament inwave-train bursts about 10^-8s in duration. What is the length in space of such wave trains
At NASA's Zero Gravity Research Facility in Cleveland, Ohio, experimental payloads fall freely from rest in an evacuated vertical shaft through a distance of 13
how long is the eagle in the air?
A 28kg rock approaches the foot of a hill with a speed of 15 m/s. Use energy conservation to find the max height above the foot of the hill reached by the rock
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