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A hiker walks such that her initial displacement is <7 miles, +35O>. She then changes heading and walks with displacement <15 miles, -135O>. What (single) displacement would bring her back to her starting position? East = 0O; positive angles are counter clockwise.
Illustrate the force vectors with their tails at the origin of coordinate system. The orientation of your vectors will be graded. The exact lengths of your vectors will not be graded but relative length of one to the other will be graded.
What is the internal resistance of a 12.0-V car battery whose terminal voltage drops to 9.5V when the starter motor draws 77A
question consider a rectangular loop of wire 6.3 cm by 8.2 cm in a uniform magnetic field of magnitude 1.7 t. the loop
q1. monochromatic light from a distant source is incident on a slit 0.750 rm mm wide. on a screen 2.00 rm m away the
You stand on a frictionless platform that is rotating with an angular speed of 7.2 rev/s. What is the change in kinetic energy of the system
In a tube filled with atoms that were excited by an electric current, some of the vibrating atoms move towards the observer while others move away as a result of the particles' random motion, and as a result of the doppler effect, the spectral lin..
A sample with a temperature of 106.51 degrees C is dropped into an insulated cup containing water whose mass is the same as the sample and whose temperature is initially 50 degrees C. The sample raised the temperature of the water to 60 degrees C. ..
A farsighted person has a near point of 60.0 cm for the left ye and a near point of 90.0 cm for the right eye. What power should contact lenses have to allow the person
Two objects (m1 = 2.15 kg and m2 = 4.30 kg) sit on a horizontal, frictionless surface and are pushed together with a compressed spring between them. How much energy was stored in the spring
A body is traveling at 5.00 m/s along the positive direction of an x-axis. No net force acts on the body. What is the speed of the forward part
A 5m-diameter garden pond holds 5.90 times 10^ {3};{rm kg} of water.
A surveyor is using a magnetic compass 5.8 m below a power line in which there is a steady current of 88 A. What is the magnetic field at the site of the compass due to the power line
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