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Consider a 0.85 m long conductive bar hanging from a pair of conductive springs attached at each end. The bar sits in a uniform magnetic field; the field is horizontally directed and perpendicular to the bar. If the spring constant for each spring is 75.0 N/m, the magnetic field strength is 0.16 T, and the bar carries a current of 12.0 A, by how much are the springs stretched when the current is on (as compared to when the current is off)?
A ball of mass 0.120 kilogram is dropped from rest from a height of 1.25 meter. It rebounds from the floor to reach a height of 0.600 meter. Find what impulse was given to the ball by floor
When the skateboarder reaches the highest point, how far is this point horizontally from the end of ramp.
The charge q is moved to one corner of the cube. Now what is the value of the flux of E through each of the faces of the cube? (To make things well defined, treat the charge like a tiny sphere.)
A projectile explodes at the top of its trajectory and breaks into two pieces with one piece having five times the mass of the other. The smaller piece returns to precisely the same point at which the projectile was launched. Where does the bigger pi..
A toy cannon uses a spring to project a 5.30 g soft rubber ball. The spring is originally compressed by 5.00 cm, At what point does the ball have maximum speed
in a single-slit fraunhofer diffraction pattern which fringe number has a peak intensity that is 0.5 percent of the
A 100 meter length of steel changes temperature by 30 C during the course of a day. If the coeffcient of thermal expansion of steel is 12 parts per million per C, what is the change in length of the steel
Assume that the blocks accelerate as shown with an acceleration of magnitude a= 0.550 m/s^2 and that the coefficient of kinetic friction between block 2 and the plane is μ= 0.400. Find out the mass of block 2, m2, when θ= 30.0.
in a particular region of earths atmosphere the electric field above earths surface has been measured to be 140 nc
A 100 gram ball moving to the right at 4.5 m/s catches up and collides with a 450 gram ball that is moving to the right at 1.1 m/s. what is the speed of the 450 gram ball after the collision
A uniform beam of length L = 12.6 meters and mass of 128.9 kg is pinned at one end in a construction site and is being supported by a wire as shown. Find the vertical component of the force from the pin on the beam
A wave pulse travels along a string at a speed of 160 cm/s. Note that parts a - d are independent and refer to changes made to the original string. Find what will be the speed if the string tension is doubled
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