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Why is the following situation impossible? A uniform beam of mass mb=3kg and length 1m supports blocks with masses m1=5kg and m2=15kg at two position (Fig-1a). The beam rests on two triangular blocks, with point "P" a distance d =0.3m to the right of the center of gravity of the beam. The position of the object of mass m2 is adjusted along the length of the beam until the normal force on the beam at "O" is zero.
Ceres, the smallest identified dwarf planet in the Solar System, has a radius R = 480 km and an acceleration due to gravity on its surface of magnitude g = 0.27 m/s2. calculate the escape speed from the surface of Ceres
Two boats are heading away from shore. Boat 1 heads due north at a speed of 2.90 m/s relative to the shore. Relative to Boat 1, Boat 2 is moving 28.2° north of east at a speed of 1.63 m/s. A passenger on Boat 2 walks due east across the deck at a spe..
In solid sodium chloride (table salt), chloride ions have one more electron than they have protons, find the electrostatic force between a sodium ion and a chloride ion.
A rocket traveling at 0.540c sets out for the star, which is 5.45ly away from earth. It will return to earth immediately after reaching the star. According to the rocket crew how far will the rocket travel
The target is located a horizontal distance d = 7.5 m from the student's feet. Assume that the balloon moves without air resistance. Use a Cartesian coordinate system with the origin at the balloon's initial position. What is the position vector,..
Which has a greater packing fraction, a diamond crystal structure or a copper crystal structure, how much empty space would be left in each structure
Angioplasty is a method in which arteries partially blocked with plaque are dilated to increase blood flow. Find by what factor must the radius of an artery be increased
An applied force varies with position according to F=K1x^n - K2, where n=3, K1=8.4 N/m^3 and K2=46 N. Find how much work is done by this force on an object
Two long, parallel wires separated by 3.00 cm carry currents in opposite directions. The current in one wire is 1.20 A, Is the force attractive or repulsive
5 kg of water at 60 degrees are put in contact with 1 kg of ice at 0 degrees and are thermally isolated from everything else. What is the change in entropy of the universe while the ice melts
A soft tennis ball is dropped onto a hard floor from a height of 2.00 m and rebounds to a height of 1.56 m. (Assume that the positive direction is upward.)
your friend who works for the college radio station must make electric-field measurements for a report to be filed with
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