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The speed of sound in water is 1498 m/s. A sonar signal is sent straight down from a ship at a point just below the water surface, and 1.80 s later the reflected signal is detected. How deep is the ocean beneath the ship?
the electric field everywhere on the surface of a charged sphere of radius 0.130 m has a magnitude of 510 nc and points
Two hydrogen atoms, both initially in the ground state,undergo a head-on collision. what is the minimum speed each atom can have
A 72.3 kg man carrying a 5.23 kg box gets on an elevator. As the elevator accelerates upwards at 0.224 m/s^2, he feels the box is heavier, During this time, what is the weight on the floor from his feet
A person is designing a 10X telescope. If the telescope is limitedto a length of 20 cm, what is the approximate focal length of the objective?
A magnetic field is applied perpendicular to the plane of the disk. Assume that the field is 0.900 T, Find the emf generated between the brushes
Suppose you are walking along Collins Avenue in South Beach and decide to order a thick milkshake (density = 1200 kg/m3). How high will the milkshake be sucked up a straw
A hydrogen atom emits a photon having an energy of 12.1 eV. What's the frequency of the photon
Standing on a sidewalk, you notice that you are halfway between a clock tower and a large building. When the clock strikes the hour, you hear an echo of the bell 0.8 s after hearing it directly from the tower. How far apart are the clock tower and th..
A bowling ball encounters a 0.760 mvertical rise on the way back to the ball rack, as the drawingillustrates. Find the translational speed (in m/s) at the top
you are a blackbody with a temperature 98.6 degrees f.a what is the total energy density of the radiation you emit?b
A piece of Nichrome wire has a radius of 6.00 10-4 m. It is used in a laboratory to make a heater that uses 4.00 102 W ofpower when connected to a voltage source of 120 V. Ignoring the effect of temperature on resistance, estimate the necessary lengt..
Water has a mass per mole of 18.0 g/mol, and each water molecule (H2O) has 10 electrons. What is the net charge of all these electrons
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