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A piece of copper wire has a resistance per unit length of 5.95 10-3 ?/m. The wire is wound into a thin, flat coil of many turns that has a radius of 0.100 m. The ends of the wire are connected to a 12.0-V battery. Find the magnetic field strength at the center of the coil.
An airplane is flying with the velocity of 85.0 m/s at an angle of 20.0 degrees above the horizontal. When the plane is a distance 107 m directly above the dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far..
In a game of billiards, the cue ball is traveling eastward when it strikes a second ball that is initially at rest. What was the speed of the cue ball prior to the collision
A car moving at 37 m/s approaches a stationary whistle that emits 270 Hz sound. The speed of sound is 347 m/s. What is the frequency of sound heard by the driver of the car.
An energy storage system based on a flywheel (a rotating disk) can store a maximum of 3.2 MJ, What is the moment of inertia of the flywheel
calculate the electric field on the axis of the disk at 5 cm, 10 cm, 50 cm, 200 cm from the center of the disk
A sailboat is traveling east at 5.0 m/s . A sudden gust of wind gives the boat an acceleration a = (0.80 m/s^2 , 40 degrees north of east). A)What is the boat's speed 4.5s later when the gust subsides? B)What is the boat's direction 4.5s later whe..
A pitcher throws a ball weighing 0.3 lb at a velocity of 90 miles per hour (horizontally). The mass moment of inertia of a spherical body is 0.4mR2, What is the total energy of the ball
A 69.00 kg skier is going down a slope oriented 33° above the horizontal. The area of each ski in contact with the snow is 0.13 m2. Determine the pressure that each ski exerts on the snow.
If, instead, the gold is drawn out into a cylindrical fiber of radius 1.5µm, what is the length of fiber.
A butterfly moves with a speed of v = 12.0 m/s east of North. The y-component of its velocity is 8.00 m/s. The angle between the direction of its motion and the x-axis.
A device known as Atwood\'s machine consists of two masses hanging from the ends of a vertical rope that passes over a pulley, calculate the magnitude of their acceleration, a, and the tension in the rope, T
What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on projectile when it is going down as it did when it was going up.
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