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A 5000N block is lifted 10 m. How much work was done?
Anonymous Quiz
73%
50000J
4%
5000J
19%
500J
4%
50J
In which of these cases is work being done?
Anonymous Quiz
4%
A student sleeps
16%
A student pushes a locked door that does not move
69%
A student carries his chair into another room
12%
A student sits on the carpet
Work done by the force of friction
Anonymous Quiz
20%
Can be positive
34%
Can be negative
5%
Can be zero
41%
All of the above
when a body slides against a rough horizontal surface, the work done by friction is
Anonymous Quiz
23%
Positive
19%
Zero
42%
Negative
15%
Constant
If a force acts perpedicular to the direction of motion of a body, what is the amount of work done?
Anonymous Quiz
10%
Infinity
18%
Constant
57%
Zero
14%
one
What is the sign of the work done by gravity on a man standing on a platform?
Anonymous Quiz
33%
Positive
33%
Zero
21%
Negative
13%
Depend on a particular situation
What is the sign of the work performed on an object in uniform circular motion?
Anonymous Quiz
48%
Zero
24%
Positive
9%
Negative
19%
Depend on the particular situation
Before it widened its research the Armauer Hansen Research institute studied only:
Anonymous Quiz
19%
HIV/AIDS
19%
Tuberculosis
56%
Leprosy
6%
Cervical cancer
A process by which traits pass from parents to the offspring
Anonymous Quiz
36%
Heredity
24%
Genetics
34%
Inheritance
7%
Cell division
A means of sharing (exchanging) genetic info b/n homologous chromosomes
Anonymous Quiz
0%
Epistasis
60%
Crossing over
25%
Cell division
16%
Meiosis
In which phase of meiosis does crossing over occur
Anonymous Quiz
11%
Interphase
28%
Metaphase
52%
Prophase
9%
Anaphase
In which phase of mitosis does the chromosomes split in to two daughter chromosomes and goes to opposite poles
Anonymous Quiz
13%
Telophase
25%
Metaphase
57%
Anaphase
5%
Cytokinesis
Which of the following is true about f(x) = x³(x-1)⁴(x²+4)?
Anonymous Quiz
28%
The graph of f(x) crosses the x-axis at x=0 and x=1
28%
The graph of f(x) has 8 turning points
22%
f(x) has a distinct zeros
22%
The graph of f(x) crosses the x-axis only at x=0
What must be added to x³+5x²+6x+4+k so that x+1 is a factor?
Anonymous Quiz
39%
2 + k
30%
-2
18%
-2 - k
12%
-k
What defines a polynomial function?
Anonymous Quiz
16%
Constant slope
59%
Sum of terms with non-negative powers
19%
Involves trigonometric operations
7%
Includes an absolute value
The Adele-Girawa asphalt road project ____ 84 percent so far.
Anonymous Quiz
14%
a) reaches
70%
b) has reached
13%
c) reached
3%
d) will reach
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