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A stone is dropped into a well. The sound of the splash is heard2.60 s later. What is the depth of the well? (Take the speed ofsound to be 343 m/s.)
Two 8.0 coulomb light bulbs are connected in a 12 V series circuit. What is the power of both glowing bulbs
a 6cm diameter horizontal pipe gradually narrows to 4cm. whenwater flows throught this pipe at a certain rate the
A freezer is used to freeze 2.0 L of water completely into ice. The water andthe freezer remain at a constant temperature of T =0°C. Determine the change in the entropy of the freezer
You close the top of your straw with your thumb and lift the straw out of your glass containing Coke. How large is the error (in per cent) if you neglect the air in the straw
a ring is fitted loosely with no friction around a long smooth rod of length l 0.501 m. the rod is fixed at one end
a sound wave travels twice as far in neon ne as it does in krypton kr in the same time interval. both neon and krypton
A substance has a melting point of 20° C and a heat of fusion of 2.9 × 104 J/kg. The boiling point is 150° C and the heat of vaporization is 5.8 × 104 J/kg at a pressure of one atmosphere. The specific heats for the solid, liquid, and gaseous phases ..
A parallel plate capacitor has plates of area 2.0*10^3 and plate separation 1.0*10^4m. find the capacitance of this system if air fills the volume between the plates.
A child and sled with a combined mass of 48 kg slide down a snow-covered (and frictionless) hill. Find the kinetic energy at the top of the hill
the scientific method is used by scientists to understand the natural laws that the universe obeys. scientists are not
A stone is dropped from rest from the roof of a 100-m high building; 2.00 s after that, a second stone is thrown straight down with initial speed v0, and the second stone passes the first stone 21.6 m above ground. What are the speeds of the two s..
An electron moves at a speed of 14000 m/s in a circular path of radius 2.4 cm in a solenoid. Find the strength of the magnetic field inside the solenoid
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