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When a 420 gram mass is attached to a spring, it oscillates with a period of 0.350 s. If instead, a different mass m2 is attached to the same spring, it oscillates with a period of 0.700 s. a) Find the force constant of the spring b) Find the mass m2.
batted straight back to Lonnie with a return speed of 60 m/s. If the bat is in contact with the ball for .050 s, illustrate what is the impulse experienced by the ball.
A vertical spring with a spring steady of 420-N/m is mounted on the floor. From directly above the spring, which is unstrained, a 0.30 kg block is dropped from rest.
A roller-coaster car moves 192 ft horizontally and then rises 144 ft at an angle of 30° above the horizontal. It then travels 144 ft at an angle of 40° downward. What is its displacement from its starting point? Use graphical techniques. (Do this on ..
A van is approaching a stationary motion detector at 45 m/s. The motion detector emits ultrasonic sound waves toward the van, what is the frequency of the reflected sound measured by the detector
When she stands 3.5m from you, what is the height of her image formed on the retina of your eye, What is the height of her image when she is 4.5 m from you
A copper (cu) penny has a mass of 3.11 g. The molar mass of copper is 63.5 g/mol. How many atoms of Cu are there ? what fraction of the electrons have been removed
A point charge of +Q is placed at the center of a square, and asecond point charge of -Q is placed at the upper-left corner. It is observed that anelectrostatic force of 2.0 N acts on the positive charge at the center.
A steel cylinder with a radius of 5cm and a length of 4cm is placed in end to end thermal contact with a copper cylinder of the same dimensions. If the free ends of the two cylinders are maintained at constant temperatures of 95C(steel) and 15C (cop..
Light of wavelength 530 nm is incident normally on a diffraction grating. Two adjacent maxima occur at angles given by sinθ = 0.2 and sinθ = 0.3, respectively. What is the separation between adjacent slits
Two identical, small insulating balls are suspended by separate 0.31m threads that are attached to a commone point on the ceiling. estimate the Charge on each ball
Unpoloarized light is passed through a set of n polarizers. The first polarizer is arranged with the polarizing slits aligned vertically, and the last polarizer of the set is arranged so its slits are aligned horizontally. Each polarizer in betwee..
a tennis player standing 12.6 m from the net hits the ball at 3.27deg above the horizontal. to clear the net the ball
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