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Question1
As standing at the edge of the roof of a building, you throw a stone upward with an initial speed of 7.87 m/s. The stone then falls to the ground that is 16.3 m below the point where the stone leaves your hand. At what speed does the stone impact the ground? How much time is the stone in the air? Overlook air resistance and take g = 9.81 m/s2.
Question2
Experiments carried out on myth busters determined that a magnetic field of 1000 gauss will corrupt magnetic strip on a credit card. Assume a long straight wire carries a current of 3.5 A. how close can a credit card come near that wire without damaging its magnetic data?
A 500-eV electron and a 300-eV electron trapped in a uniform magnetic field move in circular paths in a plane perpendicular to the magnetic field
A roof tile falls from rest from the top of a building. How far abovethe top of this window is the roof
A 5 kg mass attached to a horizontal spring is pulled from its equilibrium position by 2 m and let go. what is the maximum velocity of the mass
A small oven has a surface area of 0.26 m2. The insulated walls are 1.3 cm thick with an average thermal conductivity of 0.040 W/moC. What is the rate of heat loss
Status Newton's First Law of motion.
A 0.2 object is swung in a vertical circular path on a string 0.1 m long. The acceleration of gravity is 9.8 m/s^2. If a constant speed of 4.07 m/s is maintained, what is hte tension in string when the object is at the top of the circle? Answer in..
The source of a sound wave has a power of 1.60 µW. Assume it is a point source. What is the sound level at that distance
A glaucous-winged gull, ascending straight upward at 5.00m/s , drops a shell when it is 14.0m above the ground. how long did it take for shell to hit the ground?
A white billiard ball with mass mw = 1.31 kg is moving directly to the right with a speed of v = 2.87 m/s, What is the magnitude of the final total momentum of the system
Two balls with a net charge of - 4.0 C and + 10.0 C are separated by 2 cm. A) What is the electrostatic force on the positive charge? B) What is the electrostatic force on the negative charge?
Two shuffleboard disks of equal mass, one orange and the other green, are involved in a perfectly elastic glancing collision. Determine the speed of each disk after the collision
A 0.42 kg ball is dropped from rest at a point 1.30m above the floor. The ball rebounds straight upward to a height of 0.580 m. What are the magnitude and direction of impulse of the net force applied to the ball during the collision with the floo..
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