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Four objects are situated along the y axis as follows: a 2.08 kg object is at +3.40 m, a 2.72 kg object is at +2.32 m, a 3.00 kg object is at the origin, and a 3.72 kg object is at -0.750 m. Where is the center of gravity of this system?
It is fairly easy to strip the two electrons off a helium atom, leaving a bare nucleus of two neutrons and two protons. What is the necessary voltage difference
A rotational axis is directed perpendicular to the plane of a square and is located . Two forces, 1 and 2, are applied to diagonally opposite corners, and act togther the sides of the square, first as shown in part a and then as shown in part b of..
A strip of copper 3.0 cm wide carries a current I = 28.5 A to the right, What is the direction of the average magnetic force on the conduction electrons
Laser light at 635 falls on a double-slit apparatus with slit separation 6.9 .Find out the separation between the third and fourth bright fringes, as seen on a screen 1.4 from the slits.
A portable 3.5 kw wate heater is immersed for 3 minutes in a plastic filled with 20 kg of water at 20C. what will be the final temperature of the mixture given specific heat of water at 4186 j/gkC.
A tennis player swings her 1000 g racket with a speed of 9.00m/s . She hits a 60 g tennis ball that was approaching her at a speed of 14.0m/s . The ball rebounds at 45.0m/s.
A bullet with mass 4.85 g is fired horizontally into a 2.040-kg block attached to a horizontal spring, Find the initial speed of the bullet-block system
A positive charge of Q = 4.60 uC is fixed in place. From a distance of ri = 4.60 cm a particle of mass m = 5.70 g, What is the minumum distance rf between the two charges
Charges of 3.0 nC, -2.0 nC, -7.0 nC, and 1.0 nC are contained inside a rectangular box with length 1.0 m, width 2.0 m, What is the electric flux through the surface of the box
A spacecraft of 140 kg mass is in a circular orbit about the Earth at a height h = 3RE. What is the spacecraft's kinetic energy
culture refers to the cumulative deposit of knowledge experience beliefs values attitudes meanings hierarchies religion
A sledge loaded with bricks has a total mass of 17.9 kg and is pulled at constant speed by a rope inclined at 20.3° above the horizontal. What is the mechanical energy lost due to friction
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