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Can a step-up transformer be used as a step down transformer in a circuit? What are the safety concerns with that?
Water flows steadily into and out of a tank that sits on frictionless wheels as shown in Fig. P5.63. Determine the diameter D so that the tank remains motionless if F = 0.
A 65.0 kg diver is 3.50 m above the water, falling at speed of 6.40m/s. Calculate her kinetic energy as she hits the water. (Neglectair friction)
Two identical piano wires have a fundamental frequency of 699 Hertz when kept under the same tension. Find what fractional increase in the tension of one wire
For a satellite to be in a circular orbit 800km above the surface of the earth, what orbital speed must it be given, What is the period of the orbit
A 720-kg race car can drive around an unbanked turn at a maximum speed of 43 m/s without slipping. The turn has a radius of 160 m, What is the coefficient of static friction between the track and the car's tires
A small blob of putty of mass m = 90.0 g falls from the ceiling and lands on the outer rim of a turntable of radius R = 15.0 cm, find the postcollision angular speed of the turntable-putty
A baton twirler throws a spinning baton directly upward. As it goes up and returns to the twirler's hand, the baton turns during 5.53 revolutions. Ignoring air resistance and assuming that the average angular speed of the baton is 2.21 rev/s, decide ..
An object has an equation of motion given by x = -2t^2 + 2t - 5. What is the displacement of the particle from t = 1s to t = 3s? What is the average velocity over that time range
Determine the magnitude of the electric field 3.0 cm from the point charge.
a major leaguer hits a baseball so that it leaves the bat at a speed of 28. ms and at an angle of 36.9 above the
A jacketed kettle is used for concentrating 1,OOO lbmasdh of an aqueous salt solution using steam at 250°F. The concentrated solution boils at 220°F.
A hypodermic syringe contains a medicine with the density of water. The barrel of the syringe has a cross-sectional area A = 2.60 10-5 m2, and the needle has a cross-sectional area a = 1.00 10-8 m2.
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