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A rock of mass 200 g is attached to a 0.75 m long string and swung in a vertical plane.
1. What is the slowest speed that the rock can travel and still maintain a circular path?
2. What is the tension in the string at the bottom of the swing?
A diver makes 2.0 revolutions on the way from a 9.8-m-high platform to the water. Assuming zero initial vertical velocity, find the diver's average angular velocity during a dive
Do we know whether Mars ever had life at any time during its past? What argues in favor of the position that it may once have harbored life?
Magnetic Fields - Using the diagrams below, indicate the direction of electron flow if the associated magnetic field is in the direction indicated
A dish with a mass of 0.4 Kg has a force of Kinetic friction of 0.15 N exerted on it by a moving tablecloth for a time of 0.2 sec- What velocity does it reach in this time, starting form rest and how far (in cm) does the dish move in this time?
A paperweight, when weighed in air, has a weight of W = 6.6 N. When completely immersed in water, Find the volume of the paperweight
A "85 watt" light bulb uses anaverage power of 85 W when connectedto an rms voltage of 120 V. What is the maximum current in the bulb
The refractive indices of materials A and B have a ratio of nA/nB = 1.66. What is the speed of light in material B
A pipe whose inside diameter is 20cm is connected to four smaller pipes whose inside diameters are 5cm each. If the liquid speed in the every of the smaller pipes is 2m/s find its speed in the larger pipe.
A 54.0-g Super Ball traveling at 29.0 m/s bounces off a brick wall and rebounds at 18.0 m/s. What is the magnitude of the average acceleration of the ball
The magnitudes of the four displacement vectors shown in the drawing are A = 15.0 m, B = 10.0 m, C =14.0 m, and D = 25.0 m. Determine the (a)magnitude and (b) direction for the resultant that occurs when these vectors are added together.
A parallel-plate air capacitor has a capacitance of 400pF and a charge of magnitude 0.150\muC on each plate. The plates are 0.600mm apart. What is the electric-field magnitude between the plates
To preserve flow detail digital Doppler sampling intervals for vascular color flow image must be at intervals of?
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