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A pendulum is constructed by attaching a small metal ball to one end of a 1.25 m long string that hangs from the ceiling. the ball is released when it is raised high enough for the string to make an angle of 30.0 degrees with the vertical. how fast is it moving at the bottom of its swing?
A 2.6kg block slides along a frictionless surface at 2.0m/s . A second block, sliding at a faster 5.0m/s, collides with the first from behind and sticks to it. What was the mass of the second block
what was (a) the negative charge in coulombs on one of them and (b) the positive charge in coulombs on the other.
Suppose you could take out all the electrons and hold them in one hand, If you hold your hands 1.55{\rm m} apart at arms length, what force will each of them feel
A slab of copper of thickness b = 2.30 mm is thrust into a parallel-plate capacitor of plate area A = 2.00 cm2 and plate separation d = 5.00 mm, How much work is done on the slab as it is inserted
Matthew holds a 50 lbs dumbbell in his hand with his elbow flexed at 90 degrees. His forearm is parallel with the ground. What is the torque created by the dumbbell about the elbow joint
A particle leaves the origin with an initial velocity of 4.20 m/s in the x direction, and moves with constant acceleration ax = -1.80 m/s2 and ay = 2.30 m/s2. a-How far does the particle move in the x direction before turning around? b-What is the..
this is all the data i hve so Consider the following film speed data: n1 = 8, n2 = 8, s1 = 0.11, s2 = 0.09. Determine the test statistic
Your cup of coffee is too hot to drink when served at 95.What is mass of an ice cube, taken from a -19.0 freezer, that will cool your coffee to a pleasant 62.
A ball is thrown straight upward (along the y-axis) with an initial velocity of 9m/s from the top of a building located 20 m above ground. Find the maximum height of the ball
Three identical blocks connected by ideal strings are being pulled along a horizontal frictionless surface by a horizontal force F_vec The magnitude of the tension in the string between blocks B and C is T = 3.00{\rm N} . Assume that each block ha..
Westerly winds coming off the Pacific Ocean rise over the Rocky Mountain, which rise to a height of approximately 15,000 ft (580 hPa). The air on the western side of the mountain range is at 800 hPa (T = 70F, r = 0.75), and will subside on the easter..
If the rms value of the electric field in an electromagnetic wave is doubled, by what factor does the average intensity of the wave change
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