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 the ball will not distort when it is forced under the surface), which he forces under the surface of the water. if the child needs to supply 608 n to totally submerge the ball, calculate the diameter of the ball. the density of water is =1.000×103 kg/m3, the density of styrofoam is =95.0 kg/m3, and the acceleration due to gravity is =9.81 m/s2.
Answers: 2
![r=\sqrt[3]{\frac{3F}{g4\pi(\rho_{fd}-\rho_b)}}](/tpl/images/0371/6307/cc748.png)
![d=2\sqrt[3]{\frac{3F}{g4\pi(\rho_{fd}-\rho_b)}}](/tpl/images/0371/6307/a0d75.png)
![d=2\sqrt[3]{\frac{3(608N)}{(9.81m/s^2)4\pi((1\times10^3kg/m^3)-(95kg/m^3))}}=0.5m](/tpl/images/0371/6307/d126e.png)
Another question on Physics
Physics, 22.06.2019 03:00
Which process is represented by the pv diagram? a. the isobaric process b. the isovolumetric process c. the isothermal process d. the adiabatic process
Answers: 1
Physics, 22.06.2019 18:30
Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.
Answers: 1
Physics, 22.06.2019 21:10
An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2
Answers: 2
Physics, 22.06.2019 21:30
In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane
Answers: 1
You know the right answer?
Achild playing in a swimming pool realizes that it is easy to push a small inflated ball under the s...
Questions
Mathematics, 12.05.2021 05:10
Mathematics, 12.05.2021 05:10
Mathematics, 12.05.2021 05:10
History, 12.05.2021 05:10
Mathematics, 12.05.2021 05:10
Mathematics, 12.05.2021 05:10
Mathematics, 12.05.2021 05:10
Mathematics, 12.05.2021 05:10
English, 12.05.2021 05:10
