Physics, 11.12.2019 22:31 lauren21bunch
Achild playing in a swimming pool realizes that it is easy to push a small, inflated ball under the surface of the water, whereas a large ball requires a lot of force. the child happens to have a styrofoam ball (the shape of which will not distort when it is submerged) that he forces under the surface of the water. if the child needs to supply 581 n to totally submerge the ball, calculate the diameter of the ball. the density of water is rho w = 1.000 g / cm 3 , the density of styrofoam is rho foam = 0.0950 g / cm 3 , and the acceleration due to gravity is g = 9.81 m / s 2 .
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Physics, 22.06.2019 04:10
An initially unpolarized light if intensity 500 w/m^2 passes through four polarizers. the transmission axis between adjacent polarizers is 45โ. what percentage of the initial intensity is transmitted by the system?
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Physics, 22.06.2019 14:00
What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration
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Physics, 22.06.2019 14:00
Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?
Answers: 1
Physics, 22.06.2019 14:30
Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)
Answers: 2
Achild playing in a swimming pool realizes that it is easy to push a small, inflated ball under the...
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