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The nucleus of the atoms are usually in excited states after performing a beta decay. By emitting a photon, the nucleus recover stability. The emitted photon has the same energy as the excess energy of th...

Water has a very high specific heat capacity, it is fair to assume bed-sheets and bedding items have a much lower specific heat capacity. If an object has a high temperature and is in surroundings at a lo...

The first thing to note is that the book is sat on the table, so it is stationary. From newtons laws, we know it must have 0 total force acting on it. Every object on the earth feels a force downwards due...

Define p=momentum, E=electric field.Firstly we know that:1) ∆p/∆t = F - definition of momentum2) F = Eq - force on particle in an electric field caused by a voltage3) E = V/d - definition of electric fiel...

Assuming constant deceleration we can use the equation s = t(u+v)/2, where u=14m/s, v=0m/s and t=4s. Inputting these values we have that the distance travelled s = 1.5(14)/2 = 21/2 = 10.5m
u = the st...