A 200N force is required to be applied at one end of 1m long lever. If the distance from the effort to fulcrum is 80cm, inorder to lift a load of 600N placed at the other end. What is the efficiency of the lever?
Anonymous Quiz
17%
83%
47%
75%
15%
17%
21%
25%
👍2
Which one of the following is NOT true about pulley systems?
Anonymous Quiz
26%
Fixed pulley has velocity ratio of 2.
21%
Movable pulley has velocity ratio of 2.
35%
Compound pulley is a combination of fixed and movable pulley.
18%
Fixed pulley has no mechanical advantage.
Forwarded from Maths Group11
❤2
Aster is as ____________ as Tola.
Anonymous Quiz
72%
short
14%
shorter than
7%
the shortest
7%
shorter
❤6
❤6
He enjoys _________ to music everyday.
Anonymous Quiz
27%
listen
59%
listening
10%
to listen
3%
listened
The book ____________ by our teacher a year ago.
Anonymous Quiz
17%
is written
71%
was written
9%
wrote
3%
were written
Before she reached to us, we ____________ her for a long time.
Anonymous Quiz
9%
have waited
33%
have been waiting
30%
had waited
28%
had been waiting
❤1
What is the sum of the roots of quadratic equation x² + 5x + 6 = 0 ?
Anonymous Quiz
18%
6
20%
-6
25%
5
36%
-5
❤1
Let A = {1,3,5,7} and B = {2, 4, 6, 8}, then what is A intersection of B?
Anonymous Quiz
85%
{ }
3%
{1}
7%
{1, 3}
5%
{{2, 3}, 5}
What is the domain of a function f(x) = 3x -3 ?
Anonymous Quiz
74%
All real numbers
11%
Positive real numbers
7%
Negative real numbers
8%
All real numbers except zero
❤1
Given data: 1,7, 4, 7, 3, 2, 9, 6, 12, 7, then what is mode of the data?
Anonymous Quiz
7%
11
83%
7
6%
4
4%
9
Given two vectors: V = (1, 2), and U = (3, 3), then what is V+U ?
Anonymous Quiz
90%
4i + 5j
4%
-2i - j
4%
2i + j
2%
-4i - 5j
Forwarded from Maths Group11
❤3
Which one of the following is the zero of polynomial function p(x) = (x² + 1)(x+1) ?
Anonymous Quiz
11%
1
81%
-1
7%
3
1%
4
❤2
If two lines are parallel, then their slope must be:
Anonymous Quiz
56%
Equal
17%
-1 when they are product
21%
0
7%
Not determined