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In reaching her destination, a backpacker walks with an average velocity of 1.34 m/s, due west. This average velocity results because she hikes for 6.44 km with an average velocity of 2.68 m/s, due west, urns around, and hikes with an average velocity of 0.447 m/s, due east.
(a) How far east did she walk?
(b) If she did not turn around and walked due east, how many hours would it take her to reach her destination with an average velocity of 1.34m/s due west?
Space probes require power systems that can remain functional over long periods of time. One innovative design for a small electrical power source uses the energy released by the alpha decay of curium-244.
A parallel-plate air capacitor is to store charge of magnitude 290pC on each plate when the potential difference between the plates is 36.0V, If the area of each plate is 6.80 cm2, what is the separation between the plates
Calculate the magnitude of the angular momentum of the Mars in a circular orbit around the sun. The Mars has mass 6.42×1023kg , radius 3.40×106m , and orbit radius 2.28×1011m .
Alan leaves Los Angeles at 8:00 a.m to drive San Francisco, 400 mi away. He travels at a steady 50 mph. find Who gets to San Francisco first
After a golf ball is hit it takes off with an initial speed of 20.9 m/s and at an angle of 32.5° with respect to the horizontal. How far would the ball fly if the initial speed was doubled
A 81-kg fullback is running at 3.3m/s to the east and is stopped in 0.85s by a head-on tackle by a tackler running due west. Calculate the original momentum of the fullback
A bicycle has wheels with a diameter of 0.650 m. Find the linear acceleration of the bicycle
A boat moves through the water with two forces acting on it. One is a 2149 N forward push by the motor on the propeller, What is the acceleration of the 1156 kg boat
A pair of in-phase stereo speakers is placed side by side, 2m apart. You stand directly in front of one of the speakers, 5m from the speaker. What do you hear.
A block of mass 250 kg is pushed 2.20m along a frictionless horizontal table by a constant 16 Nforce directed 25.0 below the horizontal. estimate the work done by net force on block
A radioactive atom is moving with respect to the laboratory (which is the Earth frame) at the speed of 0.8c in the +x direction. determine the velocity of the electron measured by a laboratory observer
A space traveler weighs 580 N on earth. What will the traveler weigh on another planet whose radius is three times that of earth and whose mass is twice that of earth?
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