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Problem: A weather balloon is designed to expand to a maximum radius of 20m at its working altitude, where the air pressure is 0.030 atm and the temperature is 200 K. If the balloon is filled at atmospheric pressure of 300 K, what is the radius at liftoff?
a particular organ pipe can resonate at 264 hz 440 hz and 616 hz but not any other frequencies in between.a what is the
Brian is trying to pull Julie on a sled across a flat snowy field. Brian puls on a rope attached to the sled. how much force must Brian exert on the rope to start moving the sled
q1. the longest string a thick metal wire on a particular piano is 3.0 m long and has a tension of 300.0 n. it vibrates
A 285-kg stunt boat is driven on the surface of a lake at aconstant speed of 13.5 m/s toward a ramp, which is angled at27.1° above the horizontal. The coefficient of friction between the boat bottom and the ramp'ssurface is 0.150, and the raised e..
two identical conducting spheres fixed in place attract each other with a force of 0.112 n when their center to center
A uniform magnetic field (0.20 T) is directed 35 degrees above the horizontal, penetrating a horizontal circular coil (radius 6.0 cm)
What would the velocity be at the bottom of the ramp if there was a frictional force of 5.00 N in the opposite direction of the cubes path
A potter's wheel, with rotational inertia 6.50 , is spinning freely at 16.0 . What is the subsequent angular speed of the wheel
a magnetic field goes from the top to the bottom of this page. what direction will a proton moving from left to the right deflect
You are designing a centrifuge to spin at a rate of 15,850 rev/min. Calculate the maximum centripetal acceleration that a test-tube sample held in the centrifuge arm15.8 cm from the rotation axis must with stand.
an object moves with constant acceleration 4.50 ms2 and over a time interval reaches a final velocity of 11.2 ms.a if
A quarterback takes the ball from the line of scrimmage, runs backwards for 7.0 yards, then runs sideways parallel to the line of scrimmage for 19.0 yards. What is the magnitude of the football's resultant displacement
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