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Question1
A piece of wire with mass per unit length 78 runs horizontally at right angles to a horizontal magnetic field. A 6.5 current in the wire results in its being suspended against gravity.What is the magnetic field strength?
Question2
A motorist travelling at 16 m/s encounters a deer in the road 50 m ahead.
If the greatest acceleration the vehicle's brakes are capable of is -6 m/s2, what is the highest reaction time of the motorist that will allow her or him to keep away from hitting the deer?
Response in units of s
If his or her reaction time is 1.90167 s, how fast will (s) he be travelling when (s) he reaches the deer?
Reply in units of m/s
A 0.58-kg object connected to a light spring with a force constant of 21.0 N/m oscillates on a frictionless horizontal surface. Determine the maximum speed of the object
A runner covers one lap of a circular track 40.0m in diameter in 63.5s a) average speed for that lap? b) average velocity for that lap? c) If she covered the first half-lap in 28.6s , what was her average speed for that half-lap?
An object is placed to the left of a lens, and a real image is formed to the right of the lens. How far from the lens is the object
Gold, which has a mass of 19.32 g for each cubic centimeter of volume, is the most ductile metal, what is the area of the leaf in square meters
Suppose that in the same Atwood setup another string is attached to the bottom of m1 and a constant force f is applied, retarding the upward motion of m1. If m1 = 4.80 kg and m2 = 9.60 kg, what value of f will reduce the acceleration of the system..
A simple pendulum is made from a 0.60-m-long string and a small ball attached to its free end. how much time elapses before it attains its greatest speed
Describes possible scenarios among following
An elevator cabin has a mass of 350.5 kg, and the combined mass of the people inside the cabin is 183.7 kg. obtain the tension in the cable
A space traveller whose mass is 115 kg leaves earth. What are his weight and masson earth and in interplanetary space where there are no nearby planetary objects.
The water in a deep underground well is used as the cold reservoir of a Carnot heat pump that maintains the temperature of a house at 296 K. Determine the temperature of the well water
A girl with a mass of 40 kg is swinging from a rope with a length of 3.2 m. What is the frequency of her swinging
A light string can support a stationary hanging load of 25.8 kg before breaking. What range of speeds can the object have before the string breaks
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