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Three 7 kg masses are located at points in the xy plane. What is the magnitude of the resultant force (caused by the other two masses) on the mass at the origin? The universal gravita- tional constant is 6.6726 x 10-11 N . m2/kg2. Answer in units of N.
Consider a Resistor and inductor circuit connected to a generator, Vmax is given, frequency is given, L is given R is given. Find the phase between current I and V
A thin, uniform rod is hinged at its midpoint. To begin with, one half of the rod is bent upward and is perpendicular to the other half. What is the angular velocity of the straight rod
The of is accompanied by a ray of measured wavelength 2.48×10?2. What is the difference in energy between these two levels
Let us understand why the moon has no atmosphere......We need to remember some mechanics here! Taking the temperature of the surface of the moon to be 107 degree C (actually this is the mean day-time temperature), calculate the root mean square sp..
A long, cylindrical conductor of radius R carries a current I as shown in the figure below. The current density J, however, is not uniform over the cross-section of the conductor but is a function of the radius according to J = br3, where b is a c..
Two hockey players( one of mass 10 kg, and the other of mass 15kg) are skating and collide and stick together.? the velocity of the first sketer is 10 m/s, the other is 17 m/s. what is their speed at the moment of the collision? question: is there a ..
An electric dipole consists of charges +2e and-2e separated by 0.60 nm. It is in an electric fieldof strength 4.5 x 106 N/C. Calculate the magnitudeof the torque on the dipole when the dipole momentis (a) parallelto, (b) perpendicular to,and (c) anti..
Consider a visual binary star system with a period of 55.41 years. Its measured trigonometric parallax is 0.4217'' and, assuming that the plane of the orbit is in the plane of the sky, the true angular extent of the semi-major axis is 6.69''.
A few decades ago, trucks had chains hanging down from ther back trailers that contacted the ground. This was extremely important in the case of gasoline trucks! Now trucks are made with conducting tires.
A NASA satellite has just observed an asteroid that is on a collision course with the Earth. With what speed will it hit the Earth's surface
A woman who can row a boat at 7.3 km/h in still water faces along, straight river with a width of 6.8 km and a current of 3.3km/h. Let point directly across the river and point directly downstream. If she rows in astraight line to a point directly..
a ball is launched at the speed vo at the angle 60 degrees by a basketball player at the height of 2m from the ground.
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