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A tank having a volume of 0.100 m3 contains helium gas at 140 atm. How many balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.20 atm?
A semi-trailer is coasting downhill along a mountain highway when its brakes fail. What was the truck's initial speed
compare the electric force holding the electron in orbit (r=0.53*10^-10m) around the proton nucleus of the hydrogen atom, What is the ratio of these two forces
Two cars are traveling along a straight road. Car A maintains aconstant speed of 82 km/h and car Bmaintains a constant speed of 90 km/h.At t = 0, car B is 39 kmbehind car A. How much farther will car A travel before car B overtake sit?
An electron and a positron each of mass 9.1 x 10^-31 kg, are in the same general vicinity and have very small initial speeds
A uniform disk with a mass of 130 kg and a radius of 1.1 m rotates initially with an angular speed of 950 rev/min. How much work must this force do to stop the wheel
You are driving north on 107th Avenue at a speed of 32.6 mph. At what frequency do you year the siren
A 0.60 kg piece of aluminium at a temperature of 180 C is dumped into 900 mL of water at a temperature of 30 C. What's the final equilibrium temperature
a person who weighs 800 N is squatting on a scale. Suddenly he stars jumping, extending his legs as quickly as possible, so that he can ump into the air. as the person is in the process of jumping (accelerating upward) the reading of the scale is ..
A ping-pong ball has an average density of 0.0840 g/cm3 and a diameter of 3.80 cm. What force would be required to keep the ball completely submerged under water
While a hybrid car brakes to come to a stop at a traffic light, describe the energy transfer and materials used to transfer of this energy
At a time t = 3.40s , a point on the rim of a wheel with a radius of 0.210m has a tangential speed of 53.0m/s as the wheel slows down with a tangential acceleration of constant magnitude 11.0m/s2. Calculate the wheel's constant angular accelerat..
in a harmonic pendulum, the lengths are increasing monotonically; the lengths are measured so that in a defined set of oscillations (i.e. 20 cycles in 20 seconds), what are a set of lengths that would work
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