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A spring with an unstrained length of 0.073 m and a spring constant of 2.2 N/m hangs vertically downward from the ceiling. A uniform electric field directed upward fills the region containing the spring. A sphere with a mass of 5.1 × 10-3 kg and a net charge of +5.7 ?C is attached to the lower end of the spring. The spring is released slowly, until it reaches equilibrium. The equilibrium length of the spring is 0.065 m. What is the magnitude of the external electric field?
A plane of a 5.0 cm x 8.0 cm rectangular loop of wire is parallel to a 0.19 T magnetic field. The loop carries a current of 6.2 A. What is the magnetic moment of the loop
A crate with mass 36.0 initially at rest on a warehouse floor is acted on by a net horizontal force of 142. Explain how far does it travel in 12s and what is its speed at that time?
A chair of weight 135 lies atop a horizontal floor; the floor is not frictionless. You push on the chair with a force of = 38 directed at an angle of 42 below the horizontal and the chair slides along the floor.
A 3.0-cm-diameter parallel-plate capacitor with a spacing of 0.300 mm is charged to 500 V. What is the total energy stored in the electric field
a cylinder contains 4.0moles of a monoatomic gas at an initial temp of 27deg C. How much heat flows in to our out of the gas
A small, spherical asteroid has radius 4.00km and density 4760kg/m3. What's the escape speed from the surface
An aging coyote cannot run fast enough to catch a roadrunner. He purchases on eBay a set of jet-powered roller skates, which provide a constant horizontal acceleration of 15.0 m/s2. The coyote starts at rest 70.0 m from the edge of a cliff at the ins..
what is the magnitude FN at the highest point. The positive charges are arranged in a square. sides- .10 m the top right is 9 nC bottom right is 3 nC and the bottom left is 1 nC. find the magnitude of the electric field at the fourth corner of the ..
Assume unpolarized light of intensity 197 W/m2 falls on the polarizer in the figure, and the angle in the drawing is 37.0°. What is the light intensity reaching the photocell?
Find the electric field inside a hollow plastic ball of radius R that has charge Q uniformly distributed on its outer surface
What is constant speed V
A landing airplane makes contact with the runway with a speed of 78.0 m/s and moves toward the south. After 18.5 seconds, the airplane comes to rest. What is the average acceleration of the airplane during the landing?
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