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Rhonda, who has a mass of 60kg, is riding at 25 m/s in hersports car when she must suddenly slam on the brakes to avoidhitting a dog crossing the road. She is wearing her seatbelt, whichbrings her body to a stop in .4 seconds.
What force did the seat belt exert to her?
A yo-yo with a mass of 5 kg is attached to a rope and is swung at constant speed around a vertical circle. what is the length of the rope in meters
two sinusoidal waves traveling in opposite directions interfere to produce a standing wave with the following wave
you are driving toward a traffic signal when it turns yellow. your speed is the legal speed limit of v0 55kmh your
A 4.5×106kg spaceship moves away from Earth with a speed of 0.78c. What is the magnitude of the ship's relativistic momentum
A capacitor that is initially uncharged is connected in series with a resistor and an emf source with E=110V, What is the resistance of the resistor
Two charges, and are the distance apart. These two charges are free to move but do not because there is a third charge nearby what should be the magnitude of the third charge and its placement in sequence for the first two to be in equilibrium.
You throw a 1kg ball out of a window 12 m above the ground. It lands 5 m from the building after 1 s. ignore air resistance, How fast was it traveling when it hit the ground
when a solid cylindrical rod is connected across a fixed potential difference a current i flows through the rod.what
A 0.120-kg, 50.0-cm-long uniform bar has a small 0.055-kg mass glued to its left end and a small 0.110-kg mass glued to the other end. How far from the left end should the fulcrum be placed
a bicycle tire with a radius of .42 m has a linear velocity of 2.6 ms and an tangential acceleration of -1.0 ms2.i what
a motorcycle rider starts from rest and goes 3.75 rad counterclockwise around a circular track in 12.3 seconds.
A box slides across a frictionless floor with an initial speed v = 4.9 m/s. It encounters a rough region where the coefficient of friction is uk = 0.3. What is the shortest length of rough floor which will stop the box
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