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A small ball is attached to one end of a spring that has an unstrained length of 0.214 m. The spring is held by the other end, and the ball is whirled around in a horizontal circle at a speed of 2.73 m/s. The spring remains nearly parallel to the ground during the motion and is observed to stretch by 0.011 m. By how much would the spring stretch if it were attached to the ceiling and the ball allowed to hang straight down, motionless?
What is an expression for , the position of mass I as a function of time? imagine that position is measured in meters and time is measured in seconds.
What is the magnitude of the acceleration of a modified At wood machine if the mass of the cart is 3 kg and the hanging mass is 4 kg
At the top of Earth's atmosphere, sunlight has an average intensity of 1350W/m^2. If the average distance from Earth to the Sun is 1.50x10^11m, at what rate does the Sun radiate energy?
Consider an optical gain medium that has two levels at E 1=1.50 eV and E 2=3.50 eV. What is the spontaneous emission wavelength
A rotating flywheel can be used to store energy. if it is required to store 1.00 x 10^6 J of energy when rotating at 200 rad/s, what is the moment of inertia of the wheel
A tennis player tosses a tennis ball straight up and catches it after 3.0 s. Find the initial velocity of the ball
A 1 cm long section of the Achilles tendon stretches to 1.005 cm, What is the strain in this segment of tendon
A passenger on a Ferris wheel moves in a vertical circle of radius R=2.0 m with a constant speed v. Draw a free-body diagram, and find the upward force the seat applied to her at the top of the circle
A coin is placed 8 cm in front of a concave morror. T he mirror produces a real imege that has the diameter 4 times larger than that of the coin. What is the image distance.
You support one end of a stick of mass M and length L with the tip of your finger. what angle does the force points horizontally
What is the magnitude of the electric field at this point?
Suppose you need to rotate the plane of polarization of a plane-polarized beam of light by 90 degrees and produce only a 10% loss in intensity, Find the angle between the successive polarizers
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