A student observed a plant cell through a microscope and made an accurate drawing of the cell.
If her drawing was 80 mm in diameter and had a magnification of ×2000, what was the real
diameter of the cell?
2. Question | Information Technology
The system used by mission control in Houston, Texas to monitor the operation of space exploration vehicles is an example of the __________ processing mode.
3. Question | Mathematics
A shopkeeper buys 24 CD players for a
wholesale price of $1800. At what price per
CD player must she sell to make a profit of
10% on her cost?
4. Question | Integrated Science
Three factors that increase the risk of coronary heart disease are:
5. Question | Mathematics
A circular hole with diameter 6 cm is cut
out of a circular piece of card with a
diameter of 12 cm. The area of the
remaining card, in cm2 , is
6. Question | Social Studies
Removal of forests may cause all of the following EXCEPT
7. Question | Physics
What would be the best materials to use for making the coil and the core of an electromagnet?
8. Question | Chemistry
The number of carbon atoms in the alcohol, pentanol, is:
9. Question | Mathematics
How much simple interest is due on a loan
of $120 for two years if the annual rate of
interest is 5 1/2 per cent?
10. Question | Mathematics
In the figure above, the shaded portion
represents
11. Question | Chemistry
To make cell walls, plants must have:
12. Question | Integrated Science
Which of the following statements about anaerobic respiration is true?
13. Question | Chemistry
The type of bonding that involves loss or gain of electrons is called:
14. Question | Integrated Science
When carbon dioxide gas passes through limewater, the limewater:
15. Question | Biology
Malaria is spread by:
16. Question | Information Technology
Which of the following device interfaces integrates the device controller into the disk or CD drive?
17. Question | Mathematics
3x - 4(x + 6) =
18. Question | Integrated Science
Which one of the following best compares the eye and a camera?
19. Question | Chemistry
The number of electrons in a full electron shell is:
20. Question | Mathematics
A man's regular pay is $3 per hour up to 40 hours. Overtime is twice the payment for regular time. If he was paid $168, how many hours overtime did he work?