Recent content by tommyboo

Hi, all how would you go about finding out how much longer a star would live compared to another if you knew the one star was x times more luminous and y times more massive?

Is there a way to Combine the equation of the circumference of a circle to its radius and the distance traveled over a given time interval at a fixed velocity.

Say for example if I was to pick up a suitcase and put it in a storage container above my head would it involve the following conversions and transfers of energy? Chemical energy stored in my body is converted to kinetic energy in the movement of my hands and arms. I lift the suitcase and put...

thank you that has helped clear it up.

I am still unsure if the answears should be positive or negative if someone could explain to me each case it would be a great help.

So as the magnitude of the aceleration is - 5.1m s^-1 the force applied to the object woulb be -7650 N or am I getting mixed up still?

I have calculated magnitude of acceleration of an object slowing to a stop to be: -5.1m s^-1. I then had to find the magnitude of the unbalnced force applied to the object for it to stop which i found to be: So F= 1500 kg * 5.1 m s^-2 Which equals 7650kg m s^-2 Which...

The first one R/ty all square root. Do apologise for the bad format

I am having a problem finding the correct SI unitsfor the quantity A? In the equation A=√(R/TY) That is A equals the square root of R divided by TY (not to good showing workings on the computer sorry) , the SI units of the quantity R are kg m^3 s^–2, the SI units of the...

hi I'm a 28 year old looking to study for a MPhys (Hons) degree in Physics with Nuclear Astrophysics. i left school at 16 with good gcse`s all A`s and B`s (maths A physics A) but had to go into full time work to support myself. Would it be a problem getting onto a course without A levels and...