The amount of heat energy required to raise the temperature of 1g of Helium at NTP from to is:
For the angle of minimum deviation of a prism to be equal to its refracting angle, the prism must be made of a material whose refractive index:
Two blocks of masses 50 Kg and 30 Kg connected by a massless string pass over a tight frictionless , pulley and rest on two smooth planes inclined at angles nad reaspectively with horizontal as shown in the figure .If the system is released from rest then find time taken by 30 Kg block to reach the ground
Screenshot_648.png this is the formula given for the Q value of the ALPHA decay process my doubt is ....shouldn't the rest mass energy of products be added ..and then subtracted from the initial substance here all the terms are being subtracted... i thought first we wll have to add the rest mass energy of the products and then subtract it from the reactaant