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A boat is traveling at 3.1{\rm m/s} in the same direction as an ocean wave of wavelength 30 {\rm m} and speed 6.8 {\rm m}/{\rm s}. If the boat is on the crest of a wave, how much time will elapse until the boat is next on a crest?
A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer. What is the mass of the unknown element
Find the two locations where an object can be placed in front of a concave mirror with a radius of curvature of 37cm such that its twice its size
To cook a stew, you use a 4-mm thick steel pot with a bottom surface area of 100 cm2. The heating takes place from a 500oC source. Determine the heat transfer to the stew
use the biot savart to compute the magnetic field at the center of a matalic ring. the ring has a radius of 10^-6 m, compute the magnetic field at the center of the ring
A turntable rotates with a constant 2.00 rad/s2 angular acceleration. After 4.80 s it has rotated through an angle of 54.0 rad. What was the angular velocity of the wheel
A 0.200-kg block along a horizontal track has a speed of 1.40 m/s, What is the spring's maximum compression if the track is frictionless
A lump of mass 1.0 kg falls on it and sticks to the surface at a distance 0.7 m from the center. a) calculate the new angular speed of the disc b) if the lump gets unstuck and rolls of the disc.
A starship moving toward Earth with a speed of 0.71c launches a shuttle craft in the forward direction. What is the speed of the shuttle relative to the starship
A spring (k = 866 N/m) is hanging from the ceiling of an elevator, and a 7.3-kg object is attached to the lower end. By how much does the spring stretch
An electron traveling horizontally to the right enters a region where a uniform electric field is directed downward. What is the direction of the electric force exerted on the electron once it enters the electric field? A. to the left B. to the ri..
A playground merry-go-round has a radius of 4.40 m and a moment of inertia of 255 kg*m^2 and turns with negligible friction about a vertical axle through its center. What is the average power supplied by the child
A 54g ice cube can slide without friction up and down a 33 degree slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 11cm . The spring constant is 25 N/m When the ice cube is released, what distance wil..
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