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A thin steel beam 8.0 m long is suspended from a crane and is undergoing tensional oscillations. Two75 kg steelworkers leap onto opposite ends of the beam, as shown in Fig. 13.29. If the frequency of torsionaloscillations diminishes by 30%, what is the mass of the beam?
what is the electron configuration for ce? is this what you would expect due to the fact that the 4f subshell is more
The ammonia molecule NH3 has a permanent electric dipolemoment equal to 1.31 D, where 1 D = 1debye unit = 3.34 multiplied by10-30 C·m. Calculate the electric potential dueto an ammonia molecule at a point 51.0 nmaway along the axis of the dipole. (S..
A Ferris wheel with a radius of 14.0 m rotates at a constant rate, completing one revolution in 30.0 s. What is the apparent weight of a 60 passenger when she is at the bottom of the wheel.
An air conditioner connected to a 120 V rms ac line is equivalent to a 12.7 ? resistance and a 1.53 ? inductive reactance in series. estimate the impedance of the air conditioner
A painters scaffold is supported by cables at each end. The scaffold weighs 200 Newtons, is 18 meters long, and is uniform inconstruction. what is the tension in each of the supporting cables
A 3.42 g plastic bead charged to -3.61 nC and a 6.84 g glass bead charged to +7.22 nC are 5.26 cm apart, What is the acceleration (in m/s/s) of the plastic bead
If an electron moves from one point at a potential of ?500.0 V to another point at a potential of +500.0 V, how much work is done by the electric field
A man throws a rock from the top of a cliff that is 80.0 m above ground level with an initial speed of 39.0 m/s at an angle of 39.0° above the horizontal. Determine the time it takes for the rock to hit the ground below the cliff. Determine the hor..
Two steel guitar strings have the same length. String A has a diameter of 0.60 and is under 450.0 of tension. Find the ratio of the wave speeds
One of the most powerful cranes in the world operates in Switzerland. It can slowly raise a load of M = 5639.0 tonnes to a height of h = 14.0 m (1 tonne = 1000 kg). How much work is done by the crane
The top string of a guitar has a fundamental frequency of 310 Hz when it is allowed to vibrate as a whole, along all its 65.0 cm length from the neck to the bridge. what is the new fundamental frequency
An archer shoots an arrow toward a 300-g target that is sliding in her direction at a speed of 2.50 m/s on a smooth, slippery surface. What is the speed of the arrow after passing through the target
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