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Two charges are located on the x axis: q1 = +6.0 µC at x1 = +4.0 cm, and q2 = +6.0 µC at x2 = -4.0 cm. Two other charges are located on the y axis: q3 = +4.0 µC at y3 = +5.0 cm, and q4 = -7.0 µC at y4 = +7.0 cm. Find the net electric field (magnitude and direction) at the origin.
In an experiment in physics class, a model solid-fueled rocket is fired vertically with an acceleration of 3 m/sec2 for 6 seconds. After that time, What is the maximum altitude the rocket reaches
To kick a football, the kicker rotates his leg about the hip joint. If the velocity of the the kickers shoe is 30.3 m / s and the hip joint is 1.24 m from the tip of the shoe, what is the shoe tip\'s angular velocity
The two wires of length 2 m are 3 mm apart and carry a current of 9 A dc. Calculate the force between these wires
A trapeze artist swings in simple harmonic motion with a period of 4.2s. The acceleration of gravity is 9.81m/s2. Compute the length of the cables supporting the trapeze.
A house has a volume of 450 m3. The air-conditioning system is designed to replace the air in the house every hour, The air in the ducts flows at 5.0 m/s, find the width of the ducts
The windings of a DC motor have a resistance of 6.0 O. The motor operates on 120. V AC, and when running at full speed it generates a back emf of 105. V. What is the starting current of the motor
in a rectangular coordinate system a positive point charge q 6.00 x 10-9 c is placed at the point x 0.150 m y 0 and
An x-ray beam with wavelength 0.210nm is directed at a crystal. As the angle of incidence increases, find the spacing d between the planes of the crystal
question a lightning bolt may carry a current of 1.00 x 104 a for a short period of time. what is the resulting
You come across an open container which is filled with two liquids. Since the two liquids have different density there is a distinct separation between them. what is the density of the unknown fluid
a certain vibrating string on a piano has a length of 74cm and forms a standing wave having two antinodes. a which
Diagnostic ultrasound offrequency 4.9 MHz is used to examine tumors in soft tissue. What is the wavelength in air of such a sound wave
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