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A 0.34 kg meterstick balances at its center. If a necklace is suspended from one end of the stick, the balance point moves 9.5 cm toward that end.
(a) is the mass of the necklace more than, less than, or the same as that of the meterstick? Explain.
(b) find the mass of the necklace?
The work function for platinum is 6.35 eV. Convert the value of the work function from electron volts to joules. Find the cutoff frequency for platinum.
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.50×106\rm N , one at an angle 10.0 degrees west of north, What is the total work done by the two tugboats on the supertanker
150g of steam at 100C (373K) is injected into a container containing 250g of ice and 150g water both at 0C (273K). What is the change in entropy of the environment
You have landed on an unknown planet, Newtonia, and want to know what objects will weigh there. What would it weigh on Earth
In a double-slit experiment, the slit separation d is 13.0 times the slit width w. How many bright interference fringes are in the central diffraction envelope
A student sits on a rotating stool holding two 3.2-kg objects. When his arms are extended horizontally, the objects are 1.0 m from the axis of rotation and he rotates with an angular speed of 0.75 rad/s. The moment of inertia of the student plus s..
In an experiment of centripetal force you have a rotating mass of 500 grams, which is at 5 cm from the axis of rotation. Calculate the angular velocity of the rotating mass
Two loudspeakers are placed above and below each other and driven by the same source at a frequency of 4.50x10^2 Hz. An observer is in front of the speakers (to the right) at point O.
The second-order fringe of 610 nm light is observed at an angle of 12° when the light falls on two narrow slits. at what angle would we expect it to be observed
An electric charge on the x-axis oscillates sinusoidally about the origin. A distant observer is located at a point on the positive z-axis. In what direction will the electric field oscillate at the observer's location
a pendulum of length L = 48.8 cm and mass m=169g is released from rest when the cord makes an angle of 65.4 with the vertical
Four stars with equal masses m=1.99×1030 kg are located at the corners of a square, What is the magnitude of the net force on the star at the origin
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