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A kid shuffles across an outdoor nylon carpet, acquiring a positive static charge, and then fires a BB gun in the direction of the setting sun. The BB travels horizontally at a speed of 105 meter per second, carrying away a charge of +3.43 mC. If the Earth's local magnetic field is perpendicular to the velocity of the BB, and it exerts a force of 1.80e-8 Newton on it, find the magnitude of magnetic field at his location?
A ball is thrown straight up in the air at an initial speed of 30 m/s. Using conservation of energy, find the maximum height of the ball
You have a spring and you measure its natural length to be 10.0 cm. When you hang the massless spring from the ceiling and attach a 4kg mass to it, What is the period of this motion in seconds
Consider a circular loop of wire lying in the same plane but to the north of a very long straight current directed eastward. Find the direction of the current induced in the loop
A 7.0 kg box is raised from rest a distance of 3.0 m by a vertical force of 110 N. What is the total work done on the block when the block slides 1.4 m (measured along the incline)
A white billiard ball with mass mw = 1.52 kg is moving directly to the right with a speed of v = 3.22 m/s and collides elastically with a black billiard ball with the same mass mb = 1.52 kg that is initially at rest. What is the final speed of the..
A wheel is spinning at 53 rad/s. It undergoes an angular acceleration of 44 rad/s 2 until it reaches an angular velocity of 381 rad/s. Decide how long it took to spin up. Decide how many revolutions it made while spinning up.
imagine a solar electric power plant that operates by using a gigantic mirror to concentrate light on the boiler for a
An Earth satellite moves in a circular orbit 660 km above the Earth's surface. The period of the motion is 97.7 min. What is the speed of the satellite? What is the magnitude of the centripetal acceleration of the satellite?
One terminal of a car battery is said to be connected to "ground" since it is not really connected to the ground. What is meant by this experssion
Can the atoms in a liquid helium at 4K (interatomic distance about 0.1 nanometer) be adequately represented by nonspreading wave packets, so that their motion can be described classically.
Find out the final speeds of the two objects. What is the angle at which the object with mass 3m is scattered?
A cylindrical aluminum pipe of length 1.43 m has an inner radius of 2.00 10-3 m and an outer radius of 3.00 10-3 m. What is the resistance of this unit
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