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A person walks in the following pattern: 6.0 km north, then 2.0 km west, and finally 2.1 km south. (a) How far (in km) and (b) at what angle (measured counterclockwise from east) would a bird fly in a straight line from the same starting point to the same final point?
A starship lands on a planet of mass 6*10^23 kg. An astronaut throws a rock of mass 9.5 kg up from the ground at 17 m/s. what is the gravitational acceleration on the rock
a metal rod is forced to move with constant velocity along two parallel metal rails, if the rails are separated by 35.3 cm and the speed of the rod is 45.7 cm/s, what is the magnitude of the emf generated in volts
A meter stick with a mass of 89.5 g is being supported at the 50 cm mark with a pivot that is 1.00 cm above the center of mass of the meter stick. The moment of inertia of stick about that point is 0.00746 kgm^2. What is the period of oscillation ..
A disk rotates 33.5 times in 75 seconds. What is its period and frequency? If its radius is 2 meters, what is the magnitude of its acceleration and velocity, what is the 'Centrifugal Force' that is experiences
a model rocket is launched straight upward with an initial speed of 70.0 ms. it accelerates with a constant upward
At t = 0 it is known that of 1000 neutrons in a one-dimensional box of width 10-5 cm, 100 have energy 4E1, How many neutrons are in the left half of the box
A 2.00 kg. frictionless block is attached to an ideal spring with force constant 300 n/m. At t=0 the block has velocity -4.0 m/s, what is the position of the block when its speed is 2.5 m/s
A shot put is released with a horizontal velocity of 12 m/s and stays in the air for 2.0 seconds At what angle with the horizontal was it released
A boy tosses a ball in the vertical direction off the side of a cliff. if the initial velcoity of the ball is 15 m/s upward, determine the maximum height sb reached by the ball
A monochromatic light source emits a wavelength of 490 nm in air. When passing through a liquid, What is the liquid's index of refraction
suppose a sample of 1 mole of a diatomic ideal gas at 1 atm and 20 degrees C is ADIABATICALLY expanded to 5 times its original volume. how much work did the gas do on the environment
A projectile is launched with a momentum of 200 kg • m/s and 1000 J of kinetic energy. What is the mass of the projectile
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