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A spring length of 40 cm, if given a force of 200N, increased spring length of 8 cm. Then spring is cut into two equal parts, and both parallelized. How much effort is needed so that the spring is still increasing length of 8 cm, when installed in parallel?
conducting objects can be chrome-plated by immersing them in an electrolytic bath having positive chromium ions in
What is the wavelength of the moving proton and how does it compare with the minimum seperation radii of between two protons
the speed at which the ball left the quarterback's hand.
A battery has three cells connected in series, each with an internal resistance of 0.014Ω and an emf of 2.00 V. How much current is in each cell
The electromagnetic wave that delivers a cellular phone call to acar has a magnetic field with an rms value of 1.50 10-10 T. The wave passes perpendicularly through an open window, the area of which is 0.20 m2.
A ball tied to the end of a 0.85 meter long string is twirled in a horizontal circle therefore that the centripetal acceleration acting on the ball is 20 m/s2. Find what is the period of the ball motion
An ice skater with mass of 50 kg pushes off from the wall of an ice rink. How much work is done on the skater by the wall
Write down the original position of the system
A projectile is launched from ground level to the top of a cliff which is 195m away and 155 m high, find the initial velocity of the projectile
A Ping Pong ball is a hollow, air-filled sphere. One such Ping Pong ball has a radius of 2.25 cm and a mass of 3.5 g. When the ball is placed a few centimeters below the surface of body of fresh water and released, the ball will accelerate upwards
Figure 25-18 shows a parallel-plate capacitor of plate areaA and plate separation d. A potential differenceV0 is applied between the plates. While thebattery remains connected, a dielectric slab of thicknessb and dielectric constant κ is placed bet..
As the drawing illustrates, two disks with masses m1 and m2 are moving horizontally to the right at a speed of v0. They are on an air-hockey table, find the velocity of disk 2 at that moment
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