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Acceleration is sometimes expressed as multiples of g, the acceleration due to Earth’s gravity. In a car crash, the car’s (and driver’s) velocity may go from 26 m/s to zero in 0.15 seconds. On average, what is the acceleration experienced by the driver during the crash?
A person with perfect pitch sits on a bus bench listening to the 450{\rm Hz} horn of an approaching car. how fast is the car moving
When a 79-m-long metal pipe is heated from 14 °C to 39 °C, it lengthens by 2.56 cm. Determine the linear expansion coefficient
It is possible for a muon to be captured by a proton to form a muonic atom. A muon is identical to an electron except for its mass, Calculate the magnitude of the lowest energy state
A 925 N crate rests on the floor. How much work is required to move it at constant speed 5.4 m vertically
If an inductor carrying a 2.00 A current stores an energy of 0.250 mJ, what is its inductance
a particle is moving in the xy plane with constant acceleration. at t=0, it has a velocity of v=(4.00i-5.00j) m/s. At t=4.00 s, determine the acceleration of the particle (magnitude and direction)
A 1100 car traveling at a speed of 23 skids to a halt on wet concrete where = 0.40. How long are the skid marks
What is the tension T2 in the left-hand cable slanted at an angle of θ2 with respect to the wall? Illustrate what is the angle θ2 which the left-hand cable makes with respect to the ceiling?
A driver in a car travelling at the speed of 78 km/h sees a cat km away on the road. How long will it take for the car to accelerate uniformly to a stop in exactly 99 m.
A charge Q1 = 6u is at the origin of an x y coordinate system, What are the magnitude and direction of the force of Q2 on Q1, What are the magnitude and direction of the force of Q3 on Q1
A 90 g bead on a 60 cm long string is swung in a vertical circle about a point 200 cm above the floor
An electromagnet used to lift a car at a junkyard needs to generate a magnetic field strength of about one tesla. The magnet consists of a cylindrical iron core 1 m in diameter and 10 cm high wrapped with 100 turns of wire. Assuming the permeability ..
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