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A tetherball leans against the smooth, frictionless post to which it is attached. (See the figure) The string is attached to the ball such that a line along the string passes through the center of the ball. The string is 1.30 long and the ball has a radius of 0.150 with mass 0.410
a. What is the tension in the rope?
b. What is the force the pole exerts on the ball?
If the wire is heated to 36.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire
A garden hose having an internal diameter of 0.720 in. ( 1.8288 cm ) is connected to a lawn sprinkler that consists merely of an enclosure with 36 holes, at what speed does it leave the sprinkler holes
A girl kicks a ball from ground level. The initial velocity of the ball has an x component of 17 m/s and a y component of 10 m/s. What is the highest elevation reached by the ball
A box slides across a frictionless floor with an initial speed v = 2.5 m/s. It encounters a rough region where the coefficient of friction is µk = 0.1. find the shortest length of rough floor which will stop the box
A rectangular block of ice 12 m on each side and 1.3 m thick floats in sea water. The density of the sea water is 1025-kg/m3. The density of ice is 917 kg/m3. How many penguins of mass 26 kg each can stand on the ice block before they get their fe..
A laser beam is incident on two slits with a separation of 0.10 mm, and a screen is placed 4.00 m from the slits. what is the wavelength of the laser light
Sound with a frequency of 466 Hz travels through steel. What is the speed of the sound in steel?
How much energy would be required to break a helium nucleus into its constituents, two protons and two neutrons? The rest masses of a proton
A fisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. How fast are the waves traveling
A car starts from rest and travels for 5.0 s with a uniform acceleration of +1.8 m/s2. How fast is the car going at the end of the braking period
A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, How deep is the hole
A coin is located 27.9 cm to the left of a converging lens (f = 20.0 cm). A second, identical lens is placed to the right of the first lens, Find the separation between the lenses
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