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A ball is moving with speed 12 m/s towards a heavy wall which is moving towards the ball with the speed 10 m/s as shown in figure. Assuming collision to be perfectly elastic, find the speed of ball after the collision.

12 m/s

10 m/s

Find the mean square radius of 56Ni nucleus assuming it to be a spherical nucleus with sharp boundary


the rate of electron emission from 4mg of 210Pb80 with half life 5 days is

answer is 1.84×10^13


What is the longest-wavelength EM radiation that can eject a photoelectron from silver, given that the binding energy is 4.73 eV?



How many atoms are there in 5 moles of phosphorus

3

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If a sample of gas at a temperature of 24,2 °C, has a volume of 536 mL at 637 torr, what will its volume be if the pressure is increased to 712 torr?


Identify and explain the importance of any five sources of radiation used in the health sector


Two nuclides represented as (70 32X) and (37 17Y) are added to a proton to form anew nuclide. Determine the ratio of a proton-neutron of the new nuclide
The calcium line of wavelength λ = 422.673 nm (P → S) exhibits normal Zeeman
splitting when placed in uniform magnetic field of 4 webers/meter2
. Calculate the
wavelength of three components of normal Zeeman pattern and the separation between
them

1, A glass contains melting ice. During the process:

A.The water temperature decreases

B. The temperature of ice remains constant

C. Ice Releases heat

D. The temperature of water increases 


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