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Two wires are parallel (heading north-south). The current in each wire is northward. What is the direction of the magnetic field at the location of the right-hand wire due to the current in the left-hand wire? What is the direction of the magnetic force acting on the right hand?
A 0.182 ?F capacitor is connected to a 240-V rms AC source at 45.4 Hz. Find the reactance of the capacitor. What is the rms current through the capacitor
A projectile is fired with an initial speed of 164 m/s. Find the angle of projection such that the maximum height of the projectile is equal to 0.5 times its horizontal range
What is kinetic energy of the shell
The cheetah is one of the fastest accelerating animals, for it can go from rest to 26.8 m/s in 3.89 s. determine the average power developed by the cheetah during the acceleration phase of its motion
An advertisement claims that a centrifuge takes up only 0.127 of bench space but can produce a radial acceleration of 4900 at 8160 . Calculate the required radius of the centrifuge
A plane weighing 220 kN (25 tons) lands on an aircraft carrier. The plane is moving horizontally at 67 m/s (150 mi/h) when its tailhook grabs hold of the arresting cables. How much work is done on the plane by the arresting cables
A solid spherical ball of mass 3.36 kg and radius 0.08 m rolls along a smooth, level surface with a speed of 2 m/s. What is the ball's rotational kinetic energy
A brass rod with a length of 10.0 cm is placed end to end with an aluminum rod with a length of 30.0 cm, What is the heat flow from the hot temperature to the cold temperature
4m, 32 degrees east of north 57.3m, 36 degrees south of west 17.8m, straight south. calculate the resultant displacement vector
An object moves along the x axis according to the equation x = 3.85t2 ? 2.00t + 3.00, where x is in meters and t is in seconds. (a) Determine the average speed between t = 2.80 s and t = 4.60 s.
Two carts with masses of 12.5 kg and 4.5 kg, respectively, move in opposite directions on the frictionless horizontal track with speeds of 8 m/s and 5 m/s, respectively. The carts stick together after colliding head-on. Find the final speed of the..
A convex lense of focal length 18 cm is used as a magnifying glass. at what distance from a tiny insect must you hold this lense to get a magnification of 3.
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