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1. Write an equation for the sum of the forces acting on the car parallel to the plane and also for the sum of the forces acting on the descending mass. Note the car and descending mass both move with constant velocities.
2. If the mass of the connecting string is small compared to the other masses, F and T will be approximately equal. Use this result to combine the equations and solve for the force of friction "f" in terms of the masses and angle.
A 1 m long wire, fixed at both ends, is supporting a standing wave with 3 anti-nodes, and a frequency of 500 Hz. what is the tension on the wire
A slit 1.14 mm wide is illuminated by light of wavelength 502 nm. What is the distance in millimeters between the first two diffraction minima on the same side of the central diffraction maximum
Two particles with Q1 = 50 µC and Q2 = 79 µC are initially separated by a distance of 2.4 m, What is the change in the electric potential energy
A physics professor demonstrates the Doppler effect by tying a 580HZ sound generator to a 1.0m--long rope and whirling it around her head in a horizontal circle at 120rpm . What is the highest frequency heard by a student in the classroom? What is th..
A sound wave traveling at 341 m/s is emittedby foghorn of a tugboat. An echo is heard2.40 s later.How far away is the reflecting object? reply in units of m.
a circular loop of conducting wire measuring 12cm in diameter is placed into a .60-t magnetic field. what is the
A freight train is rolling down the track at 65.0km/hr. Out ofthe fog, 1km behind, a fast express going 120km/hr, appears on thesame track. The Express engineer slams on the brakes.
Consider a series RLC circuit where R = 957 ? and C = 5.25 ?F. However, the inductance L of the inductor is unknown. What is the inductance of the inductor in millihenrys
As the lead engineer for a development team, you have to make a decision on what components to use for a new x-ray imaging system, which is going to be sold to the military for field use
A camera lens has a focal length of 215 mm, How far from the lens should the subject for the photo be if the lens is 21.9 cm from the film
A flywheel with radius 0.75 m has an initial angular velocity of 30 rad/s. What is the angular acceleration of the flywheel
A 17 g bullet is accelerated in a rifle barrel 73.4 cm long to a speed of 493 m/s. Use the work-energy theorem tofind the average force exerted on the bullet while it is being accelerated. Answer in units of N.
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