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When a 2.90 kg object is hung vertically on a certain light spring described by hooke's law, the spring stretches 2.36 cm
A) what is the force constant of the spring?
B) if the 2.90-kg object is removed, how far will the spring stretch if a 1.45 kg block is hung on it?
C) how much work must an external agent do to stretch the same spring 8.90 cm from its unstretched position?
Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 2.10 e 10^6 m/s. What is the distance of closest approach? Please show work in the answer because I am attempting to learn this.
A 60.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.760 and 0.410, correspondingly. What horizontal pushing force is required to (i) just start the crate moving and (ii) slide the crate ..
A parallel-plate capacitor has a capacitance of c1 = 5.5 ?F when filled with air and c2 = 33 ?F when filled with a dielectric oil at potential difference of 12 V, Input an expression for the permittivity of the oil
A parallel-plate capacitor is constructed using a dielectric material whose dielectric constant is 2.70, Find the minimum area of the capacitor plates
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. 1-Find the volume of the cylinder. 2-Calculate the probable percent error in the length. 3-Calculate the probable percent..
Imagine two 5.0 g bags of protons, one at the earth's north pole and the other at the south pole. Calculate the gravitational attraction that each bag exerts on the other
An archer wishes to shoot an arrow at a target at eye level a distance of 49.0 m away. what angle should the arrow make with the horizontal as it is being shot
A person, with his ear to the ground, sees a huge stone strike the concrete pavement. A moment later two sounds are heard from the impact: one travels in the air and the other in the concrete, and they are 6.60s apart. How far away did the impact ..
Find out (a) capacitance and (b) maximum voltage that can be applied to a Teflon-filled parallel- plate capacitor having a plate area of 175 cm2 and an insulation thickness of 0.040 mm.
Consider a Carnot engine that works between thermal reservoirs with temperatures of 1030.0 K and 297.0 K. How much energy is delivered to the cooler reservoir
A soccer ball is kicked with the initial speed of 10.8 m/s . After 0.720 s it is at its highest point. What was its initial direction of motion
An Atwood machine consists of two masses, = 6.5 and = 8.5 , linked by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius = 0.40 and mass 0.80 .
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