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A disk defamation horizontally on a frictionless, mass less, rotational motion support such that the disk is spinning freely about a vertical axis through the centre of the disk and perpendicular to the face of the disk. A second disk the same to the first disk is held in place a negligible height immeasurably close however not touching above the first disk. The second disk is aligned therefore perfectly with the first disk that the axis of rotation of the first disk also passes through the centre of the second disk. The person embracing the second disk drops it onto the first disk and the two disks spin as one. Is mechanical energy preserved in this process?
The most probable radius (in pm) for finding the electron He + is: (1) 0.0 (2) 52.9 (3) 26.5 (4) 105.8 Ans: (c)26.5
When a metal becomes a superconductor, there is a tremendous decrease in it's: a) Total volume b) Electrical resistance c) Length d) Density Ans: While a
Real ball bearings Study real ball bearings and roller bearings. Make a list of devices that having ball bearings or roller bearings.
A bathtub is filled to the brim with ice cold water and has an iceberg floating in it. It's a big bathtub the iceberg, of course, project above the surface of the tube when the ice
a glass prism in the shape of a quaeter-cylinder lies on the table.a uniform,horizontal light falls on its vertical plane surface,as shown in the figure.if the radius of the cylind
Why nuclear fission preceeds nuclear fusion?
A thin convex lens of focal length 0.1m and a thin concave lens of focal length 0.1m are placed co-axially in contact. What is the total power of the combination?
It is the difference among potential at two points of a conductor. Please note that by potential(at a point A) ,we actually mean potential difference among point A and another
Describe the variation of the radius of bright fringe of Newton's rings with refractive index of the thin film enclosed between the glass plate and plan-convex lens when observed b
Which Path Requires the Most Energy This condition that can be simulated through use of a easy physics lab in that a force is applied to raise a cart up an incline at stable sp
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