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Two equal "carts" are on an air track. The first slides in at a velocity of +9 meter per second and hits the second which is originally at rest. If the velocity of the second is +6 meter per second afterwards, obtain what is the velocity of the first?
A BMW of mass 2.0 x 103 kilogram is traveling at 42 m/s. It approaches a 1.0 x 103 kilogram Volkswagen going 25 m/s in the same direction and strikes it in the rear. If the collision slows the BMW down to 33 m/s, find what is the speed of the BMW a..
An air-traffic controller observes two aircraft on his radar screen. The first is at altitude 950 m, horizontal distance 19.2 km, What is the distance between the two aircraft
Suppose a heat engine takes in 420 J of energy from a hot reservoir and performs 30 J of work in each cycle.
A horizontal force of 213 N is exerted on a 1.90 kg discus as it rotates uniformly in a horizontal circle (at arm's length) of radius 1.60 m. determine the time for one revolution of the discus. Round the answer to 2 decimal places.
What is the capacitance of a pair of circular plates with a radius of 9.0cm separated by 3.2mm of mica?
With brakes fully applied, a 1550 kg car deccelerates from a speed of 78.0 km/hr. What is the change in the kinetic energy of the car
Three main component equations in the bohr model of the hydrogen atom. One of these is now said to represent the electron exhibiting a wave nature. Which one of the equations is this and why can it now be thought of as representing the wave behaviour..
A 2.5-kg cart is rolling along a frictionless, horizontaltrack towards a 1.5-kg cart that is held initially at rest. Thecarts are loaded with strong magnets that cause them to attract oneanother. Thus, the speed of each cart increases.
A person sees clearly wearing eyeglasses that have a power of -5.00 diopters, If the person wants to switch to contact lenses placed directly on the eyes, what lens power should be prescribed
Two steel guitar strings have the same length. String A has a diameter of 0.55 and is under 440.0 of tension. Find the ratio of the wave speeds in these two strings
Damped forced oscillations, A single stage vibration isolation system consists of a heavy granite slab (100 kg) sitting on legs which act as a vertical damped spring. The "Q" (Quality Factor) of the system is 8.0, and the velocity damping coeffici..
A positive charge of 5.10 uC is fixed in place. From a distance of 3.50 centimeter a particle of mass 6.90 gram, Find how close to the fixed charge does the particle get before it comes to rest and starts traveling away
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