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Vector A is directed along the positive y-axis and has magnitude 5.0 units. Vector B is directed along the negative x-axis and has magnitude 7.0 unit. (a) What are the magnitude and direction of A + B? (b) What are the magnitude and direction of A - B? *directions counterclockwise from the +x-axis (c) What are the x- and y-components of B - A?
A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 7.18x10-2 kg/s. What is the speed at which gasoline moves through the fuel line
A magnetic field is oriented at an angle of 41degrees to the normal of a rectangular area 4.5cm by 6.3cm. If the magnetic flux through this surface has a magnitude of 4.9×10^?5T*m^2 , what is the strength of the magnetic field?
A 12 kg mass starts from rest and slides down an inclined plane 8.0 10-1 m long in 0.9 s. What net force is acting on the mass along the incline?
The frequency of sound waves in air from a violin string are around 570 Hz. what is the wavelength of the sound waves
compute the linear speed due to the Earth's rotation for a person at a point on its surface located at 40o N latitude (this would be near the Ohio river valley, for instance). The radius of the Earth is 6.40 ξ 106 m. (For comparison, the speed of ..
A typical wall outlet is 120 volts in the U. S. Personal MP3 players require much smaller voltages, calculate the number of turns on the secondary coil of the adapter transformer
A 71.9-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is (a)accelerating upward with an acceleration of 1.92 m/s2,(b) moving upward at a constant speed, and(c) accelerating downward with an acceleration of..
The speed of a light wave in a certain transparent material is 0.669 times its speed in a vaccum. Which is 3.00 * 108 m/s. what is its wavelength in nanometers
An ice cube density =917kg/m3,is sliding down a frictionless in line . The sides of the cubes each hace a lenght of 0.75 m. What pressure does the cube exert on the line?
A freight train has a mass of 2 multiplied by 107-kg. If the locomotive can exert a constant pull of 12.50 multiplied by 105-N, how long would it take to enhancement the speed of the train from rest to 85.00 km/h.
A boy of mass 35 kg and a girl of mass 40 kg are skating towards each other with speeds of 2.5 m/s, and 2.0 m/s respectively. Assume that there is no friction, and find their combined velocity after they meet
An electric motor has a 840-turn coil on its armature. The coil is circular with diameter 17cmand carries 10.0A, ind the maximum torque on the coil when it rotates in a 1.20T magnetic fiel
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