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Dario, a prep cook at an Italian restaurant, spins a salad spinner and observes that it rotates 20.0 times in 5.00 seconds and then stops spinning it. The salad spinner rotates 6.00 more times before it comes to rest. Assume that the spinner slows down with constant angular acceleration
What is the magnitude of the angular acceleration of the salad spinner as it slows down?
A runner is going 25 m/s around a curved section of track that has radius of 125 meter. Compute what is the runners acceleration
how long does the block remain in contact.
A stretched string fixed at each end has a mass of 49.0 g and a length of 8.60 m. The tension in the string is 49.0 N. What is the vibration frequency for this harmonic
an indestructible bullet 2.00 cm long is fired straight through a board that is 10.0 cm thick. the bullet strikes the
A current of 4 A flows in a copper wire 8 mm in diameter. The density of valence electrons in copper is roughly 9 × 1028 m?3. Find the drift speed of these electrons
Consider a model thermodynamic system in which the allowed (nondegeerate) energy levels are 0, E, 2E, 3E. Compute the average occupation numbers for each energy level
Find the speed of sound in a thin rod of cast iron, which has a sheer modulus of 4.5 1010 Pa and a density of 7.30 103 kg/m3
two nanowires are separated by 1.2 nm as measured by stm. inside the wires the potential energy is zero but between the
A lamp draws 0.50 A from a 120-V generator. How much power is delivered? How much energy does the lamp convert in 5.0 min?
A capacitor with its plates separated by paper stores 5.0 of charge when it is connected to a particular battery. How much charge does that capacitor store
a wire 4.0 m long with a mass of 20 g is under tension. a transverse wave is propagated on the wire for which the
Three indistinguishable balloons are given charges of -1.9 μC, -2.5 μC, and +2.0 μC respectively. You are given two of them at random, and you observe that they repel each other. Find the total charge of the balloons you have been handed.
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