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A spelunker (cave explorer) drops a stone from rest into a hole. The speed of sound is 343 m/s in air, and the sound of the stone striking the bottom is heard 5.29 s after the stone is dropped. How deep is the hole?
Calculate for the capacitance, the charge of plate, and magnitude of electric field between the plates for a capacitor whose plates are 11 mm apart are 2.00 m-2 in area and being connected to a source with potential difference of 270V.
A 0.46 kg block slides across a tabletop with initial velocity of 3.1 m/s, Find the average friction force that retarded its motion
An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0°C and rejects heat to a room at 22.5°C. How much heat is discharged into the room
A 645N woman climbs a staircase that rises at 50 degrees above the horizontal and is 4.95m long. Her speed is a constant 40.0cm/s. How much work has gravity done on her as she climbed the stairs
An airplane of wing span 40.0 m flying horizontally at a speed of 774 km/h due north in a region where the vertical component of the earth's magnetic field is 4.75 *10^-5 T. Find the emf induced across its wing
if oxygen molecules are more massive than the nitrogen molecules, is the rms speed of the O2 molecules greater than, less than, or euqls to rms speed of the n2 molecules.
What is the largest wavelength that will give constructive interference at an observation point 171 from one source and 295 from the other source.
A 70-kg man and a 55-kg woman holding a 2.50-kg purse on ice skates stand facing each other. What is the woman's recoil speed
An oil-filled capacitor has square parallel plates 26{\rm cm} on a side, separated by 0.47{\rm mm}. Find the dielectric constant of the oil
Physics: How much time is required to row cross the river? How wide is the river?, A river man can row his boat at a speed of 2.5 m/s through still water. He wants to row directly across a river that has a current flowing at 1.5m/s
An ocean liner leaves New York City and travels 19.2 ° north of east for 186km. How far east and how far north has it gone? In other words, what are magnitudes of the components of the ship's displacement vector in the directions (1) due east and ..
In one of the original Doppler experiments a tuba was played on a moving flat train car at a frequency of 75 hz, What beat frequency was heard if the train car approached the station at a soeed of 10m/s
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