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A woman walks 250m in the direction 300 east of north, then 175m directly east. Find (a) the magnitude and (b) the angle of her displacement from the starting point. (c) Find the distance she walks. (d) Which is greater, the distance or the magnitude of her displacement.
The force on a point charge, q, located along the z axis due to a uniformly charged ring of total charge Q, Find the points along the z axis where the force is maximum
question a 5.0 v battery storing 72.0 kj of energy supplies 1.5 a of current to a circuit. how much energy does the
A skier starts from rest at the top of a hill that is inclined at 12.0° with the horizontal. The hillside is 180.0 m long, and the coefficient of friction between the snow and the skis is 0.0750. At the bottom of the hill, the snow is level and the c..
q1. there is a well-known legend about physicist isaac newton. it says that he was inspired into his improvement of the
You are trying to lose weight by working out on a rowing machine. Each time you pull the rowing bar (which simulates the "oars") toward you, What is the magnitude of the force that you exert on the handle
An open flask sitting in a lab fridge looks empty, but we know that actually it is filled with a mixture of gasses called air. how many gas molecules does the flask contain
A uniform rod of mass 2.55×10?2kg and length 0.440m rotates in a horizontal plane about a fixed axis through its center, What is the angular speed of the system at the instant when the rings reach the ends of the rod
Red light (n = 1.520) and violet light (n =1.538) traveling in air are incident on a slab of crown glass. Bothcolors enter the glass at the same angle of refraction. The redlight has an angle of incidence of 30.5°. What is the angle ofincidence of th..
The secondary coil of a step-up transformer provides the voltage that operates an electrostatic air filter. Find the power consumed by the air filter
consider a small cube of ice enclosed in a reservoir so large that small transfer of heat does not change its
two guns a and b located at xa 0 and xb 1.5 km fire at an approaching rocket. gun a fires at t 0 gun b fires at t
Ultraviolet light of wavelength 218 nm shines on a zinc surface. If the workfunction of zinc is 4.3 ev, what is the maximum kinetic energya photo electron can have
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