Top answers

What does a negative velocity mean?

To understand this question, it is important to know that velocity has both a direction and a magnitude. The magnitude can be expressed by the unit m/s, however the direction is expressed by a vector. To dis...
TD
Answered by Thomas D. • Physics tutor
35639 Views

Why does a salt not conduct electricity in its solid state?

In order to conduct electricity, charged particles must be available and these charged particles must have the possibily to move around freely. Salts consist of ions: charged particles. In the solid state ho...
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Answered by Thomas D. • Chemistry tutor
36121 Views

Find the coordinates of the minimum point of the curve y = 3x^(2) + 9x + 10

(Note: in this answer I will use the notation y' to represent the differential of y, and by the same reasoning y'' denotes the differential of y', or the second derivative of y.) A curve's maximum or minimum...
JF
Answered by James F. • Maths tutor
28170 Views

What is the difference between interval and ratio data?

Interval data: The data points have a uniform interval between them. E.G: Temperature. The difference between 10 and 20 degrees is exactly the same as the difference between 90 and 100 degrees. Ratio data: A...
EF
Answered by Emma F. • Psychology tutor
11624 Views

Why is the genetic code described as being universal?

The genetic code refers to DNA, which is like a blueprint that can be found in all living organisms. DNA is made up of 4 nucletotides: Adenine (A), Thymine (T), Guanine (G) Cytosine (C), whether in a bacteri...
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Answered by Laureen J. • Biology tutor
36114 Views