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Q. A motor boat traveling 5 m/s, East encounters a current traveling 2.5 m/s, North.
a.What is the resultant velocity of the motor boat?
b.If the width of the river is 80 meters wide, then how much time does it take the boat to travel shore to shore?
c.What distance downstream does the boat reach the opposite shore?
How many electrons should be transferred from the plate. When you enter your answer, leave off the unit rm dB.
At what angle of incidence will green light (g = 560 nm) be most strongly reflected? Imagine the film has the minimum thickness that can produce these reflections.
A tube is open only at one end. A certain harmonic generted by the tube has a frequency of 470Hz. The next higher harmonic has a frequency of 555Hz. The speed of sound in air is 343m/s.
What is an acceleration of the car
Two ocean liners, each with a mass of 40,000 metric tons, are moving on parallel courses, 92 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Care for the ships as ..
An unstretched spring with spring constant 21 N/cm is suspended from the ceiling. A 3.3 kg mass is attached to the spring and let fall. To the nearest tenth of the centimeter, how far does it stretch the spring.
Find out an acceleration of mass and tension in the string
Determine the position of the GPS satellite relative to and from the center of the earth and ratio of clock rates on a GPS clock in orbit and one on the surface of the earth.
A 36 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.1 m-long string. The balls undergo a head-on, perfectly elastic collision, after which 110 g ball swings out to a maximum angle theta_..
Two freight cars, each with a mass of 2.9 x 10^5 kg, collide and stick together. One was initially moving at 2.80 m/s and the other was at rest. What is the final speed.
If 3.43×10^8 electrons flow through the ground wire to Earth and the ground wire is then removed, what is the net charge on the electroscope.
During the late 19th and early 20th centuries, direct observations showed that a glacier in Switzerland flowed forward in the downhill direction while its snout (terminus) was retreating higher up the valley? Which of the following describes these..
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