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On your first trip to Planet X you happen to take along a 200 g mass, a 40.0 cm long spring, a meter stick, and a stopwatch. You're curious about the free fall acceleration on Planet X, where ordinary tasks seem easier than on earth, but you can't find this information in your Visitor's Guide. One night you suspend the spring from the ceiling in your room and hang the mass from it. You find that the mass stretches the spring by 31.2 cm. You then pull the mass down 10.0 cm and release it. With the stopwatch you find that 10 oscillations take 14.5 s. Can you now satisfy your curiosity? The answer is suppose to be 5.86 m/s squared but how did they come upon that?
an ac power supply puts out a voltage V = 170sin(2n60t) and is connected to a resistor R = 20 ohm. what is the average power in W dissipated in the resistor
a diver springs upward with an initial speed of 1.7 ms from a 4.0-m board.a find the velocity with which he strikes the
The rope wrapped around the outer diameter of the disk is pulled at a constant speed of 1.06 m/s. find how fast does the hanging mass rise
A power supply has an open-circuit voltage of 35.0 V and an internal resistance of 2.00 O. What additional resistance should be added in series
A solenoid 1.63 m long and 2.23 cm in diameter carries a current of 24.9 A. The magnetic field inside the solenoid is 30.7 mT. Find the length of the wire forming the solenoid
Neglecting air resistance, how fast is it going when it hits the balloon? Illustrate what is the acceleration of the cannonball just before it hits the balloon?
A 30 g steel ball bounces elastically on a steel plate, always returning to the same maximum height h = 14.2 m. What is the weight of the ball
Suppose a satellite is in a circular orbit 3.425 Earth radii above the surface of the Earth (4.425 Earth radii from the center of the Earth). By how much does it have to increase its speed
The wave function y(x, t) for a certain standing wave on a string fixed at both ends is given by y(x, t) = 3.70 sin (0.220x) cos (270t), What is the speed of transverse waves on this string
A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 28.2°, What is the index of refraction of the substance
the proper length of one spaceship is three times that of another. the two spaceships are traveling in the same
q1. before starting this problem review conceptual. the force vector a has the magnitude of 75.0 newtons n and points
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