Physics, 28.01.2020 23:41 Envious1552
One type of slingshot can be made from a length of rope and a leather pocket for holding the stone. the stone can be thrown by whirling it rapidly in a horizontal circle and releasing it at the right moment. such a slingshot is used to throw a stone from the edge of a cliff, the point of release being 18.0 m above the base of the cliff. the stone lands on the ground below the cliff at a point x. the horizontal distance of point x from the base of the cliff (directly beneath the point of release) is thirty times the radius of the circle on which the stone is whirled. determine the angular speed of the stone at the moment of release.
Answers: 3
Physics, 21.06.2019 15:10, lilisncz
Four objects are being tested to see how they are affected by fluid friction. object w has a surface area of 4.5 cm2, object x has a surface area of 2.5 cm2, object y has a surface area of 6.2 cm2, and object z has a surface area of 3 cm2. which object would experience the most fluid friction?
Answers: 3
Physics, 22.06.2019 13:00, mckadams02
The magnitude of the amount of energy released by burning a fuel source, measured in energy per unit mass, is called its fuel value. note that the fuel value is the negative of the isobaric specific heat of combustion for the fuel. if all the energy obtained from burning 1.23 pounds of butane with a fuel value of 10.85 kcal/g is used to heat 128.0 kg of water at an initial temperature of 18.3 °c, what is the final temperature? note that 1 lb = 453.6 g.
Answers: 3
One type of slingshot can be made from a length of rope and a leather pocket for holding the stone....
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