Top answers

You are given layers A,F,D,H without knowing their relative or specific age. Write two ways you can know which layer is the oldest.

The simpliest way of knowing is when the layers are horizontal, the stratigraphy principle of superposition applies so the top layer is the youngest the bottom layer is the oldest. In a folded anticlyne form...
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Answered by Theodoros T. • Geology tutor
2138 Views

Why does an ice skater spin faster when they hold in their arms?

This phenomena is a result of the conservation of angular momentum: An isolated system's rotational intertia does not change. Angular momentum is given mathematically by L = r x p , by decreasing r , p = m v...
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Answered by George L. • Physics tutor
3109 Views

What was the short term significance of tanks and their usage in World War One?

The tank’s significance in World War One was primarily in its effect on the morale of people both on the front lines and at home. This psychological boost to the war effort came at a time when many were beco...
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Answered by Alex Y. • History tutor
17460 Views

Describe the 3 types of solution to a quadratic equation

The behaviour of the solution depends on the value of the discriminant, D = b 2 – 4 ac, (aptly named as it allows you to discriminate between solutions) If D > 0: The equation has real roots (the parabola...
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Answered by George L. • Maths tutor
3881 Views

What is the difference between a competitive and a non-competitive inhibitor?

Inhibitors are molecules that stop substrates from being able to bind to their enzymes, and therefore inhibit the action of specific enzymes. A competitive inhibitor is an inhibitor which has a similar shape...
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Answered by Sreya C. • Biology tutor
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