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A weightless spring of force constant 2.50 N/cm is 15.0 cm long when nothing is attached to it. It is now used to pull horizontally on a 12.5 kg box on a smooth horizontal floor. You observe that the box starts from rest and moves 96.0 cm during the first 1.60 s of its motion. How long is the spring during this motion?
A charge 1.1 × 10?5 C is fixed on the x-axis at 7 m, and a charge 8 × 10?6 C is fixed on the y-axis at 5 m. Calculate the magnitude of the resultant electric field ~E at the origin. Answer in units of N/C
If the two balls started rolling at the same time at a point 1.2 m behind the edge of the table, will they reach the floor at the same time? define.
Two point charges 1.9cm apart have an electric potential energy -150?J . The total charge is 30nC
A 3.0cm x 3.0cm parallel-plate capacitor has a 2.0 spacing. The electric field strength inside the capacitor is 1.3×10^5 V/m How much charge is on each plate
A motorcyclist is traveling along a road. He sees another cyclist ahead and starts to accelerate for 5 seconds to pass him. What is the angular displacement of the wheels
A small glass bead has been charged to + 30{\rm nC}. What is the magnitude of the acceleration of a proton that is 3.0{\rm cm} from the center of the bead
what happens to speed of sound in air if you quadruple the temperatur of the air, How many times larger does it become
q1. a ball tied to the end of the string is swung in a vertical arc of radius r under the action of gravity. what would
A proton moves at a speed of 995 m/s in a direction perpendicular to a magnetic field with a magnitude of 0.76 T
A small air-core solenoid has a length of 18 cm and a radius of 0 . 53 cm. The permeability of free space is 1 . 25664 × 10 ? 6 N / A 2 . how many turns per centimeter (whole turns plus fractional turns) are required
An ocean liner leaves New York City and travels 16.10 ° north of east for 234 km. How far east and how far north has it gone? In other words, what are the magnitudes of components of the ship's displacement vector in directions (a) due east and (b..
A storage tank at STP contains 15.0 kgof nitrogen (N2). What is the volume of the tank
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