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A 1000 kilogram boat travels across a lake when its engine is shut off. Magnitude of friction between water and boat is proportional to boat's speed (proportionality constant is 70). Determine the time it takes to slow down to one half its original speed when the engine is shut off.
1.for the pinned frame below subjected to a 500 kn lateral force what are the internal forces in each member?2.for a
An electron with a speed of 1.1 × 107 m/s moves horizontally into a region where a constant vertical force of 5.6 × 10-16 N acts on it. determine the vertical distance the electron is deflected
A lady ate a whole medium size pizza storing up 120 food Calories. This energy is used to heat up 2 liters of water from a certain initial temperature to a final temperature of 80 deg.C
The rechargeable batteries for a laptop computer need a much smaller voltage than what a wall socket provides. What is the current coming from the wall socket
a cylinder with a piston contains 0.150 mol of nitrogen at 1.80 105 pa and 300 k. the nitrogen may be treated as an
What is the total electric flux due to these two point charges through a spherical surface centered at the origin and with radius r3 = 2.70 m?
A car travels at a constant speed around a circular track whoseradius is 3.26 km. The car goes once around the track in 253 s.What is the magnitude of the centripetal acceleration of the car?
A circle of rope of total mass 1kg and radius 1m is spinning at angular velocity 2.5 rad/sec about an axis through the center of the circle
A girl and her bicycle have a total mass of 35 kg. At the top of a hill her speed is5 m/s. what is her speed at the bottom
A 64g bullet traveling at 250 m/s penetrates a block of ice at 0 C and comes to rest within the ice. how much ice is melted as a result of the collision
An aircraft performs a maneuver called an aileron roll. During this maneuver, the plan turns like a screw as it maintains a straight flight path, but using its ailerons to set the wings in circular motion.
A 75.0 kg football player leaps straight up into the air (with no horizontal velocity) to catch a pass. how fast was the ball travelling
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