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A woman walks 285 m in the direction 29° east of north, then 195 m directly east.
a) Find the magnitude
b) Find the distance she walks.
c) Find the angle of her final displacement from the starting point.
d) Which is greater, that distance or the magnitude of her displacement?
A puddle holds 150 grams of water. If .50 grams of water evaporates from the surface, what is the approx temperature altering of the remaining water.
Speedy Sue, driving at 30.0 m/s, enters a one-lane tunnel. She then observes a slow-moving van 155 m ahead traveling at 5.00 m/s. obtain the distance of closest approach between Sue's car and the van
A spool whose inner core has a radius of 1.00 cm and whose end caps have a radius of 1.50 cm has a tightly wound inner core. what is the angular speed of the spool
q1. david is driving a steady 21.0 when he passes tina who is sitting in her car at rest. tina begins to accelerate at
What assumptions can be made about the radiation per unit areaof a blackbody? Is there a standard area of black body? What value for emissivity
when an object is placed 57.0 from a certain converging lens it forms a real image. when the object is moved to 38.0
A laser produces a cylindrical beam of light of wavelength 400nm. The average energy in a 2m length of the beam is 5*10^-8J. What is the average power output of the laser
A 184.0 g piece of lead is heated to 80.0oC and then dropped into a calorimeter containing 681.0 g of water that initally is at 18.0oC
The sound level measured in the room by a person watching a movie in a home theatre system varies from 63 dB throughout a quiet part to 92 dB throughout a loud part. In the order of how many times louder is the latter sound.
Gadolinium sulphate obeys Langevin's theory of paramagnetism down to a few degrees Kelvin, Determine the degree of magnetic saturation in this salt at a temperature of 2K in a field of flux density 2 weber/m^2
runner a is initially 5.7 km west of a flagpole and is running with a constant velocity of 8.3 kmh due east. runner b
the two spheres in the figure are charged. each has a mass of 0.91 kg. the lower mass is rigidly attached to the floor
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