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The battery of a pocket calculator has a voltage of 4.0 V and devilers a current of 0.17 mA. In one hour of operation:
A) How much charge flows in the circuit?
B) How much energy does the battery deliver to the calculator circuit?
David is driving a steady 21.0 when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.70 at the instant when David passes. How far does Tina drive before passing David.
A long straight wire carries a current I1 = 3.2 A and is a distance h = 12.2 cm from a rectangular current loop that carries a current I2 = 1.2 A, What is the force exerted by the current loop on the wire
Two charges of +0.250 C are placed at the points (1.25 mm, 0) and (-1.25 mm, 0). A third charge of -0.450 C is placed at the origin. a. What is the electric field at the point (0, 2.20 mm)? b. At what point on the y-axis will E be zero? Show graph..
What is the difference in blood pressure ({rm mm-Hg}) between the top of the head and bottom of the feet of a 1.80-{rm m}-tall person standing vertically.
The car now stops, and the four people get out. By how much does the car body rise on its suspension owing to this reduce in weight.
A pulley 18 in diameter is free to rotate about the horizontal axle. A 220 mass and a 420 mass are tied to either end of a massless string, and string is hung over the pulley.
A basketball player makes a jump shot. The 0.520-kg ball is released at a height of 1.90 m above the floor with a speed of 7.13 m/s, What is the work done on the ball by air resistance, a nonconservative force
This problem introduces the concept of tension. The instance is a rope, oriented vertically, that is being pulled from both ends. Let and (with u for up and d for down) represent the magnitude of the forces acting on the top and bottom of the rope..
A 150- crate, starting from rest, is pulled across a floor with a constant horizontal force of 360 . For the first 11 the floor is frictionless, and for the next 11 the coefficient of friction is 0.31. Illustrate what is the final speed of the c..
The hunter uses a small powerboat that moves at a maximum speed of 9.5 km/h with respect to the water. Illustrate what is the minimum time necessary for crossing?
What is magnitude of the electric field
What is the average velocity (Vrms) of 0.75kg of air at room temperature (20°C), What is the average kinetic energy of air at 20°C, using the velocity you just calculated
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