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Several kids are on a sled pulled by a four-wheeler across a level snow-covered field. The sled is moving at a fix speed of 9.00 m/s, and the tow rope (parallel to the ground) creates an angle of 35.0 degree with respect to the velocity of the sled. If the tension in the rope is 38.0 Newton, compute the work done on the sled by the tension in the rope in 12.0 second.
two parallel metal rods form a plane inclined at 20.0deg to the horizontal. the upper end of the rods are connected
An ideal spring of negligible mass is 11.00cm long when nothing is attached to it, If you wanted to store 10.0 J of potential energy in this spring, what would be its total length? Assume that it continues to obey Hooke's law
A circular coil of 4 turns and a diameter of 30.0 cm is oriented in a vertical plane with its axis perpendicular to the horizontal component of the Earth's magnetic field. find the horizontal component of the Earths magnetic field
A 2.7 kg mass acceleration speed at 10 m/s2 in a direction 38? north of east. One of the two forces acting on the mass has a magnitude of 10.6 N and is directed north. Determine the magnitude of the second force.
Two carts of unequal mass (massA>massB) move on parallel firctionless horizontal tracks. both carts start from rest and have the same constant force exerted on them.until they reach the finish line. The force begins to exert on car A first.
A 30 charge is moved from a point where = 190 to a point where = -70. How much work is done by the force that moves the charge
a space vehicle is moving at a speed of 0.85c with respect to an external observer. what is the speed of the project as seen by the external observer
A technician wraps wire around a tube of length 33 cm having a diameter of 8.1 cm. what is the self-induced emf in the solenoid
A Piece of ice of mass mi at 0 C is placed in water of mass mw at 20 C. The system is in a container of negligible heat capacity, what is the equilibrium temperature of the system
Smoke particles in the air typically have masses of the order of 10 to 16 kg. The Brownian motion (rapid, irregular movement) of these particles, resulting from collisions with air molecules, can be observed with microscope.
A softball is thrown at a speed of42 miles per hour at a wall that is 44 feet away. Find how much force does the wall exert on the softball and in what direction
How much energy can be stored in a capacitor with two parallel plates, each with an area of 64.0 cm2 and separated by a gap of 1.7 mm, filled with porcelain whose dielectric constant is 5.9, and holding equal and opposite charges of magnitude 370. ?C
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