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An object's displacement, s metres, from a fixed point after t seconds is s=5t^3+t^2. Find expressions for the object's velocity and acceleration at time t seconds.

Differentiating gives the rate of change and velocity and acceleration are rates of change. Velocity is the rate of change of displacement compared to time and acceleration is the rate of change of velocity ...
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Answered by Seeitha S. • Maths tutor
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What effect does temperature have on enzyme action?

Enzymes are biological catalysts and speed up reactions happening inside organisms. An increase in temperature increases the rate of enzyme activity and therefore rate of reaction up to a certain point. In m...
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Answered by Alex G. • Biology tutor
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How should I structure an essay for English Literature?

Begin with an introduction establishing the question you are answering (including defining any of the terms that you will be focusing on) and what your main argument will be when addressing it. Think of this...
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Explain 2 adaptations of red blood cells.

Biconcave shape- Increases the surface area of the red blood cell, meaning there is a greater surface over which diffusion of the gases being exchanged can occur (CO2/ O2).No nucleus- Allows red blood cells ...
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Answered by Danielle P. • Biology tutor
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What are the stages of protein synthesis?

Protein synthesis consists of two stages- transcription and translation . Transcription takes place in the nucleus- this is where a strand of mRNA is formed. A section of DNA is unwound by an enzyme (RNA pol...
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Answered by Yasmin Z. • Biology tutor
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