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Two gerbils run in place with a linear speed of 0.55 on an exercise wheel that is shaped like a hoop. Find the angular momentum of the system if each gerbil has a mass of 0.22 and the exercise wheel has a radius of 9.5 and a mass of 5.5.
In a vertical dive a perefrine falcon can accelerate at 0.6 times the free-fall acceleration (that is 0.6 g) in reaching a speed of about 100 m/s. what is the radius of the turn
A bank robber travelling at 75mi/hr in an escape car suddenly sees a barricade 150 m ahead. The robber slams on the breaks following a 0.75 delay (the drivers reaction time) After the brakes are applied, the car decelerates at 4.2m/s^2. Will th..
A LASIK vision correction system uses a laser that emits 10 -long pulses of light, each with 2.5 of energy. The laser is focused to a 0.90 -diameter circle. What is the average power of each laser pulse
The carbon isotope 14-C is used for carbon dating of archeological artifacts. What is the recoil speed of the nucleus
A space station is constructed in the shape of a wheel 16 rm m in diameter, with essentially all of its 6.0×10^5 rm kg mass at the rim.
A stone with a mass of 0.80 kg is attached to one end of a string 0.900 m long. The string would break if its tension exceeds 600-N.
The concrete wall of a building is 0.10m thick. The temperature inside the building is 20.0 °C, while the temperature outside is 0°C. Heat is conducted through the wall.
A plane accelerates from rest at a constant rate of 5.00m/s2 along a runway that is 1800m long. What is the time tTO needed to take off
A 681 kg crate is lifted to the top of a building with an acceleration of 3.37 m/s2. Find the force exerted by the cable on the crate
Two point charges, +3.18 µC and -6.65 µC, are separated by 1.13 m. What is the electric potential midway between them
A laser used in cutting or drilling metals produces 10 ns pulses at 1.00 J per pulse. What is the peak power of each pulse
If the proton is fired at a speed of 3.0×107m/s , what is its closest approach to the surface of the nucleus? Assume the nucleus remains at rest
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