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Q. A spring (k=830N/m) is hanging from the ceiling of an elevator, and a 5.0-kg object is attached to the lower end. By how much does the spring stretch (relative to its unstrained length) while elevator is accelerating upward at a = 0.60 m/s2?
Q. A package in an airplane moving horizontally at 275 m/s is dropped while the altitude is 766 meters. How far forward from the spot over which it was dropped does the package land?
What are magnitude and direction of the force
What is an initial speed given to the rock
The quantity of charge q (in coulombs) that has passed through a surface of area 2.10 cm2 varies with time according to equation q = 7t3 + 5t + 6, where t is in seconds.
assume that for the couple in, you were told that the girl's mass was two-thirds that of the boy. The boy has a velocity of v = +0.61 m/s. What would be the girl's velocity in this case.
Find maximum height reached by the diver using the equation of motion.
If you connect these 3 resistors in series across a variable emf source of negligible internal resistance, what is the largest potential difference this emf source can be set to without damaging any of resistors.
The radius of curvature of a convex mirror is 1.60 x 10^2 cm. An object that is 14.0 cm high is placed 40.0 cm in front of this mirror. Find out (1) the location and (2) the height of the image.
A plane, diving with constant speed at an angle of 49 ° with the vertical, releases a projectile at an altitude of 570 m. The projectile hits the ground 7.0 s after release.
The coil is flipped so its plane is vertical to the magnetic field in 0.050 s. What is the magnitude of the average induced emf.
Two trains and a bird Two trains, each having a speed of 23km/h, are headed at each other on the equal straight track. A bird that can fly 60km/h flies off the front of one train when they are 70 km apart and heads directly for the other train.
What are the two main mechanisms that the planet Earth uses to balance water that goes up with the water that comes down over Earth.
Coherent light with wavelength of 602 passes by two very narrow slits and the interference pattern is observed on a screen a distance of 3.00 from the slits. The first-order bright fringe is a distance of 4.84 from the center of the central bright..
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