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An ice-skater with a moment of inertia of 1.1 kg/m2 starts to spin with her arms extended. After 25 s, she has an angular velocity of 15 rev/s.
What is the net torque acting on the skater?
De Broglie wavelength (L. de Broglie; 1924) The prediction which particles also have wave characteristics, where the effective wavelength of an element would be inversely propo
Two wires on a piano are the same length and are pulled by the same tension. wire 1 vibrates at a frequency 1.5 times the frequency of wire 2. Calculate the ratio of their masses (
Because force=dp/dt and force=0 in first law of motion => dp/dt=0 => p=const. or linear momentum is conserved.
1.Consider the dangers of using a camp stove inside an enclosed space like a tent. Test data show that a high heat liquid fuel camp stove can dramatically increase CO mixing ratios
Explain the Nuclear Notation? Chemical reactions deal with the number of electrons exchanged or shared. Nuclear reactions, on the other hand, involve protons and neutrons and
Forces: If a Force is applied to a body, it will cause that body to move. A body that is already moving will change its speed or direction. Note that the term 'change its spe
2 upright plane mirrors are 4 meters apart and facing each other. A man stands 1 meter in front of them. Determine the distance between the second images in the mirror
two charge(q) each are kept 1m apart, where should third charge be placed in order to get third charge -q/4
Two grating A and B have the same width of the ruled surface but A has greater number of lines. Giving reasons compare in two cases (a) Intensity (b) Width of principal maxim
A satellite of mass "M" is in orbit around the earth. If a second satellite of mass "2M" is to be placed in the similar orbit, the second satellite must have a velocity which i
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