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A public transportation bus makes the position-time graph over a 5.00 hour interval shown below. There are four segments to the total trip. What is the average velocity (magnitude and direction) of the bus during interval 1 and 4.
An alpha particle (m = 6.7 ´ 10-27 kg, q = +3.2 ´ 10-19 C) has a speed of 20 km/s at point A and moves to point B where it momentarily stops. Only electric forces act on the particle throughout this motion. Find out an electric potential difference V..
A charge of +2q is fixed to one corner of a square, while a charge of -1q is fixed to the diagonally opposite corner. Expressed in terms of q, what charge should be fixed to the center of square, so the potential is zero at each of the two empty c..
What stage of the scientific method would someone be at if they make a prediction that drinking alcohol will make people more violent throughout a sporting event.
A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.32s, What is the weight of the grapes
A charge of -2.20 micro coulombs is located at (3.00m, 4.50m), and a charge of +3.60 micro coulombs is located at (-2.8m, 0m).
Tension is maintained in a string as in the figure below. The observed wave speed is v = 21.0 m/s when the suspended mass is m = 3.00 kg. What is the mass per unit length of the string
What is the rms speed of the molecules in low-density hydrogen gas at 0 ^circ {rm C}? (The mass of a hydrogen molecule, rm{H_2} , is 3.32×10-27 kg ).
A spacecraft of 140 kg mass is in a circular orbit about the Earth at a height h = 3RE. What is the spacecraft's kinetic energy
An electric water heater operates at 66 A and 16 kilowatts, Calculate N (the total number of resistors) and the cost of manufacturing the heating element if in a pack of 100 resistors cost $0.50
Two different wavelengths of monochromatic light are projected through the same double slit. First a 490 nm light is projected, calculate the unknown wavelength
Two parallel metal rods form a plane inclined at 20 degrees to the horizontal. The upper end of the rods are connected together by a resistor of 166ohms, What is the maximum speed of the bar
A particle of charge 1.2mC is located 1mm inside of uniform charge of 3.2mC that has an inner radius of 5.0cm, What is the magnitude of the net electrostatic force on the particle
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