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A spherical balloon has a radius of 7.35m and is filled with helium. The density of helium is 0.179 kg/m^3, and the density of air is 1.29 kg/m^3. The skin and structure of the balloon has a mass of 990kg . Neglect the buoyant force on the cargo volume itself.
Determine the largest mass of cargo the balloon can lift.
Two parallel wires are 100m long and 10cm apart and carry opposite chargse of 100 micro couloumbs, what is the electrical force between the wires
A 15 kg block is accelerated at 2.0 m/s2 up a frictionless plane inclined at 5.0° to the horizontal, with the speed increasing from 10 m/s to 24 m/s. What is the change in the block's mechanical energy
Find out the velocity of the rain
A stone is thrown vertically downward from a cliff 186.0-m tall. During the last half second of its flight, Find the initial speed of the stone
using a large shiny curved surface (mirror). you notice that an object is upright and exactly 2/3 of the height of the object when it is 150m away from the mirror. what is the image distance
A 0.170 kg tumour is being irradiated by a radioactive source. Each decay of the radioactive source produces a particle with an energy of 0.450 MeV. find the activity of the radioactive source
Regarding the Earth and a cloud layer 750 m above the Earth as the "plates" of a capacitor, calculate the capacitance. Assume the cloud layer has an area of 1 km2 and that the air between cloud and ground is pure and dry.
Unpolarized light passes through two polaroid sheets. What fraction of the initial light is transmitted
A wire loop that encloses an area of 10 cm2 has a resistance of 5 Ohms. How much charge flows past a point in the wire
In constructing a large mobile, an artist hangs an aluminum sphere of mass 6.0 kg from a vertical steel wire 0.50 m long, compute the tensile Strain and elongation
A heavy stone of mass m is hung from the ceiling by a thin 8.25-g wire that is 65.0 cm long. When you gently pluck the upper end of the wire, What is the mass m of the stone
A satellite strikes the International Space Station traveling at a speed of 14.70 miles/ Second relative to the station. calculate the energy released by the collision
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