Physics, 01.12.2021 08:20 ghari112345
A 28 kg child on a swing is traveling at 4.2 m/s and has 315 J of total mechanical energy.
A). What is his gravitational potential energy?
B). How high is he above the ground?
Answers: 3
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Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?
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Abird flies directly overhead from where you stand at an altitude of 300.0 m and at a speed horizontal to the ground of 20.0 m/s. the bird has a mass of 2.0 kg. the radius vector to the bird makes an angle \thetaθ with respect to the ground. the radius vector to the bird and its momentum vector lie in the xyxy-plane. what is the bird’s angular momentum about the point where you are standing?
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Two conductors, a and b, are each in the shape of a tetrahedron. but of different sizes. they are charged in the following manner: 1. tetrahedron a is charged from an electrostatic generator to charge q. 2. tetrahedron a is briefly touched to tetrahedron b. 3. steps 1 and 2 are repeated until the charge on tetrahedron b reaches a maximum value. if the charge on tetrahedron b was q/4 after the first time it touched tetrahedron a. what is the final charge qbmax on tetrahedron b?
Answers: 2
A 28 kg child on a swing is traveling at 4.2 m/s and has 315 J of total mechanical energy.
A). Wha...
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