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The lowest outdoor temperature ever recorded on Earth was %u2212128.6 %u25E6F, recorded at Vostok Station, Antarctica, in 1983. What is this temperature on the Celsius scale? Answer in units of %u25E6C
What is this temperature on the Kelvin scale?
A 20 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.10 m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 110 g ball swings out to a maximum angle t..
A hydrogen atom is initially at n =3 state. find How much energy is required to ionize this atom
A converging lens has a focal lenght of 20cm. determine Where is the image located
What is the direction of proton after the collision? What is the direction of carbon atom after the collision.
A playground is on the flat roof of a city school, 5.4 m above the street below (see figure). The vertical wall of the building is h = 6.90 m high, Find the vertical distance by which the ball clears the wall.
High-speed stroboscopic photographs show that the head of a 170-g golf club is traveling at 47 m/s just before it strikes a 46-g golf ball at rest on a tee, Find the speed of the golf ball just after impact
If one arm of a Michelson interferometer contains a tube 2.5 cm long that is ?rst evacuated and then slowly FIlled with air (n=1.0003)
A child pulls an imaginary friend in a wagon at constant speed for 10m with a force of 16N. how much work does the child do
What is the kinetic energy of a carbon atom moving with a speed of 500 m/s.
The electron mass is 9×10?31 kg. What is the magnitude of the momentum of the electron
Speedboat A negotiates a curve whose radius is 124m. Speedboat B negotiates a curve whose radius is 230m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
tennis ball A is dropped from a height of 15 m. Tennis ball B is thrown horizontally from a height of 15 m with a horizontal velocity of 25 m/s
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