Top answers

To what extent was the victory of the Bolsheviks in the Russian Civil War due to Trotsky's leadership?

The victory of the Bolsheviks in the Russian Civil War of 1918 can be largely attributed to the good leadership of the Bolshevik Commissar for War, Trotsky. Other factors certainly came into play, such as th...
IC
Answered by India C. • History tutor
9090 Views

Solve the simultaneous equations 2x + y = 7 and 3x - y = 8

There are three methods for solving simultaneous equations: elimination, substitution and by using graphs.Elimination is a good method in this case as the y terms are equal in both equations. We just add the...
TJ
Answered by Tia J. • Maths tutor
7802 Views

Show that a mass on a spring obeys simple harmonic motion.

Let the mass be m . Let the natural length of the spring be L . The defining equation of simple harmonic motion (SHM) is that the acceleration is proportional to, and acts in the opposite direction to, the d...
TJ
Answered by Tia J. • Physics tutor
8074 Views

Prove the change of base formula for logarithms. That is, prove that log_a (x) = log_b (x) / log_b (a).

Firstly, recall the definition of a logarithm: if y = log a (x), then this means that y is the power you have to raise a to, to get x, that is a y = x.Now, we want to introduce a new base, b. Let's take log ...
TH
Answered by Tom H. • Maths tutor
14092 Views

Outline the formation of hotspots and explain their relationship to plate movement.

Hotspots, which occur away from plate boundaries, develop when the decay of radioactive elements in the Earth's core heat magma directly above it in the mantle. The heated magma expands and becomes less dens...
SH
Answered by Sophie H. • Geography tutor
19656 Views