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Question: The position of a particle is given by the expression x = (4.00m)cos(3πt + π), where x is in meters and t is in seconds. Determine
(a) the frequency and period of the motion,
(b) the amplitude of the motion,
(c) the phace constant and,
(d) the position of the particle at t = .250s.
A wire 3.00 m long and 0.450 mm2 in cross-sectional area has a resistance of 41 at 20°C. what is the temperature coefficient of resistivity
you need a capacitance of 40 microf but you dont happen to have a 40 microf capacitor. you do have a 56 microf
A 45.0kg girl is standing on a 170 kg plank. The plank, originally at rest, is free to slide on a frozen lake, which is a flat, frictionless surface. The girl begins to walk along the plank at a constant velocity of 1.53m/s relative to the plank.
A model car is propelled by a cylinder of carbon dioxide gas. The cylinder emits gas at a rate of 4.5 grams/second with an exit speed of 80.0 m/s. what is the car's initial acceleration
A lens appears greenish yellow (λ = 570 nm is strongest) when white light reflects from it. What minimum thickness of coating (n = 1.33) do you consider is used on such a glass (n =1.52) lens? Why?
A 5 kilogram mass attached to a horizontal spring is pulled from its equilibrium position by 2 meter and let go. find what is the maximum velocity of the mass
An electric oscillator ismade with a 0.15 micro F capacitor and a 2.0 mH inductor. The capacitor is initially charged up with a 6.0 V battery. What is the frequencyat which it oscillates?
Two charges, one of 2.50 µC and the other of -3.50 µC, are placed on the x-axis, Find the position on the x-axis where the net force on a small charge +q would be zero
A car is traveling along a straight road at a velocity of +35.2 m/s when its engine cuts out. Find the velocity of the car at the end of the initial 1.71-second interval
A 52.1-kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are 0.589 and 0.312, respectively. What horizontal pushing force is required to (a) just start the crate moving and (b) slide the crate across ..
Police determine skid marks 83 m long on the highway showing where the car made an emergency stop. Assume that the acceleration was -10 m/s2 (about the highest for dry pavement), how fast was the car going.
A bicycle wheel has a diameter of 64.1 cm and a mass of 1.81 kg. suppose that the wheel is a hoop with all of the mass concentrated on the outside radius. The bicycle is placed on a stationary stand and a resistive force of 120 N is applied tangent..
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