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Explain how Earthquakes Occur when Stress Stored in Rocks is Released.

Earthquakes occur when the stored stress in the rock exceeds its strength. Energy is released as the rocks fractures and moves in the form of seismic waves. The energy released causes vibrations creating gro...
AG
Answered by Arthur G. • Geology tutor
8584 Views

State and explain two adaptations of a red blood cell?

Red blood cells have a biconcave disk shape, meaning that it increases their surface area and allows for more rapid diffusion of oxygen into and out of the cell. Red blood cells do not have a nucleus so they...
JD
Answered by Joe D. • Biology tutor
25717 Views

Write a balanced chemical symbol equation for a reaction between Potassium and Water, including state symbols?

2K(s) + 2H 2 O(l) = 2KOH(aq) + H 2 (g) Potassium (K) is a group 1 metal, which is a solid. Water (H 2 O) reacts with Potassium to form Potassium Hydroxide (KOH) and Hydrogen (H 2 ). Hydrogen exists naturally...
JD
Answered by Joe D. • Chemistry tutor
163950 Views

Differentiate with respect to x and write in its simpliest form, Y=(2x-3)/x^2?

Y=(2x-3)/x 2 Quotient Rule: dY/dx(u/v)=(u'v-v'u)/v 2 dY/dx=(2x 2 -2x(2x-3))/x 4 =(6x-2x 2 )/x 4 (Collect numerator x terms.) =(6-2x)/x 3 (Cancel the fraction by a factor of x.) dY/dx=(6-2x)/x 3
JD
Answered by Joe D. • Maths tutor
7037 Views

[FP2] Solve: 3 cosh x - 4 sinh x = 7

First write cosh and sinh as exponentials, from their respective definitions:sinh x = 1/2 (e x - e -x )cosh x = 1/2 (e x + e -x ​)So: 3 * 1/2 (e x + e -x ​) - 4 * 1/2 (e x - e -x ) = 7Multiply by 2: 3 * (e x...
WU
Answered by William U. • Maths tutor
21929 Views