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A car traveling 40.0 m/s seats a train approaching a crossing track that's perpendicular to the road and estimates the train's speed to be about 30.0 m/s. The front of the train in 300.0 m from the crossing and the front of the car is 400.0 meter from the crossing. The length of the car is 5.00 meter and the width of the train is 3.00 meter and its length is 25.0 meter.
In unit vector notation, find the velocity of the train with respect to the car and find the angel between this velocity and the line of sight to the train.
An ionized deuteron (a particle with a charge) passes through a velocity selector whose perpendicular magnetic and electric fields have magnitudes of 43 mT and 7.8 kV/m
A 80 kg block is pulled at a constant speed of 8.3 m/s across a horizontal floor by an applied force of 120 N directed 37° above the horizontal. What is the rate at which the force does work on the block
Use the worked example above to help you solve this problem. A woman weighs a fish with a spring scale attached to the ceiling of an elevator, What weight does the scale read
A 64.0-kg runner has a speed of 5.50 m/s at one instant during a long-distance event. by what factor does his kinetic energy change
A nearest-neighbor pair of Mg2+ ions are separated by a distance of square root 2 a0. Calculate the coulombic force of repulsion between the ions.
a bunch of metal plates each with either one or two small slits cut in them have been mixed up and you have been
Car C of mass 3.0 x 103 kilogram is traveling at 50 m/s. It approaches car D of mass 2.0 x 103 kilogram going 30 m/s in the similar direction and strikes it in the rear. determine which car exerts a larger force on the other
q1. suppose that the two speakers are separated by 2.50 m and are vibrating exactly out of phase at a frequency of 429
a piece of wire is stretched from length l1 to a length of l2 step a and then from length l2 to length l3 step ba write
A 93.9 g bullet is fired from a rifle having a barrel 0.256 m long. Assuming the origin is placed where the bullet begins to move, theforce exerted on the bullet by the expanding gas is F=a+bx−cx2,where a2=18600N, b = 10800N/m, c = 26300 N/m2, wit..
The figure below shows a thin-lens representation of a compound microscope (not to scale). The objective produces a real image I of object O just inside the focal point F1 of the eyepiece. Image I then acts as an object for the eyepiece, which pro..
A cyclotron with dee radius 53.0 cm is operated at an oscillatorfrequency of 12.0 MHz to accelerate protons, (a) What magnitudeB of magnetic field is required to achieve resonance?
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