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The mass of an empty rubber balloon is 0.0125 kg. Matt fills the balloon with helium at a density of 0.181 kg/m3 , so that the balloon has a radius of 0.60 m. Matt then fastens the filled balloon to a vertical line. What is the tension in the line?
The answer is T=9.7N, I just need an explanation as to why that is the answer. I don't know where that number is coming from.
Illustrate what is the time it takes for the bullet to hit the ground, how far down range does the bullet travel, and what is the resultant velocity (in m/s) and final angle?
A mass of 3kg, is sitting on a 34° incline and is connected by a massless string over a pulley in the shape of a hollow cylinder , what is the acceleration of the system
An organ pipe that is opened at both ends and is near a heating pipe such that the temperature is 35.00 C. Thefundamental frequency is 5000 Hz.
Find the rms current, phase angle and rms voltage across R & L, in an RL circuit when a 58 Hertz 123 Volt rms ac voltage is applied, where R=1.80 kΩ and L=350 mH
A box of mass m = 2.5 kg moves along a straight line through a vector displacement d = (6.4 i -3.4 j) m. What is the work done by this force as the box moves
A wooden block with equal sides of 4 cm is floating in water. If the density of the block is half the density of water, how far is it from the water to the top of the block?
By measuring the spectrum of wavelengths of light from our sun, we know that its surface temperature is 5820 K. calculate the diameter of our sun
In frame S, event B occurs 2 microseconds after event A and event A occurs at the origion whereas event B on the x-axis at x=3.3km. How fast must an observer be traveling along the +x axis
Uranium has two naturally occurring isotopes. U238 (atomic mass 238.0508 u) has a natural abundance of 99.275% and U235 (atomic mass 235.0439 u) has an abundance of 0.720%.
The force on a long wire is a maximum of 6.20 10-2 N when placed between the pole faces of a magnet. What type of magnetic pole is the top pole face
A ball is rolling up a hill with a smooth surface. Initial kinetic energy of the ball is equal to its potential energy on the top of the hill. How does the answer depend on the shape of the hill surface
Grant Hill jumps 1.3m straight up into the air to slam dunk a basketball into the net. With what speed did he leave the floor
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