Compare the advantages and disadvantages of using fossil fuels and nuclear fuel to generate electricity in the UK. Success criteria​
1-2 marks: state one advantage and/or one disadvantage of each method​
3-4 marks: Describe one advantage and one disadvantage for both methods​
5-6 marks: describe two advantages and two disadvantages for both methods

1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of

Hydrogen and helium are both members of?

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)