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LørdySmårt1SS
Questions and answers by visitors named
LørdySmårt1SS
Questions (68)
variable force given as F→=2yi^+7xj^ moves a particle along a parabolic given as y=3x2 from the origin (0, 0) to a point (3,
1 answer
66 views
One end of a cylindrical glass rod of refractive index 1.5 is a hemispherical surface of radius of curvature 20 mm. An object is
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151 views
A string of natural length L extends to a new length L' under tensile force F. If Hooke’s law applies, the work done in
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45 views
Calculate the Young’s modulus for the wire of cross-sectional area 6×10-5 m2 and length 50 cm which stretches by 0.2 mm under
1 answer
54 views
What is the temperature at which the Celsius and the Fahrenheit temperature scales record the same reading?
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34 views
The mass of ice needed to cool 60 g of water from 43 °C to 20 °C is _____? [Take the specific heat capacity of water as 4200
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60 views
Consider the junctions of two dissimilar metals which are maintained at different temperatures. An electromotive force is set up
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41 views
Consider a stationary observer at a railway station who sees a passenger in a railway coach that is in motion at constant speed
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41 views
Which of these is correct about viscosity?
Question 10 Select one: both viscous force and upthrust act upwards it increases with
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32 views
Find out how much heat is needed to be supplied to a gas at a pressure of 1.25×105 Pa, such that the pressure increases by 25
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32 views
An 80N-force extends a spring of natural length 8m by 0.4m what will be the length of the spring when the applied force is 100N?
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39 views
Consider a block of mass 2 kg connected to a freely hanging block of mass 4 kg by a light and inextensible string which passes
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70 views
Consider 40 N-force applied at an angle of 37° above the horizontal which pulls a 5-kg box on a horizontal floor. The
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32 views
A ball of mass 50 g tied to the end of a 50 cm light and inextensible string is whirled around in a vertical circle. Find the
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54 views
Compute the altitude above the earth's surface at which the acceleration due to gravity would be 4.9 ms-2? [Assume the mean
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56 views
Find the temperature at which the root-mean-square speed of oxygen molecules would have the value of 640 ms-1 [1 kilomole of
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37 views
If a→=i+j-2k then the direction cosines are______.
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23 views
Given that PQ→=-i+2j-2k, the magnitude of PQ→ is
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22 views
AB→+BC→+CD→+DE→+EF→
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14 views
If m→=3i+4j+5k and n→=2i+j+7k then the evaluation of m→∙n→ is ______.
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25 views
Suppose a→=2i+4j+3k and b→=i+5j-2k, then the vector product is ________
1 answer
18 views
a→=5i+7j and b→=13i+17j then the evaluation of a→×b→ is
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24 views
The distance between the points A=(4,3) and B=(6,5) is
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11 views
The acute angle between two parallel lines in a plane is
Question 5 Select one: m2+m11-m2m1 m2-m1m2m1 m2-m11+m2m1 m2+m11+m2m1
1 answer
25 views
A straight line has a gradient of 53 and its passes through the point (1,3), It’s intercept on the y-axis is
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42 views
If C=3,6 and D=4,8. The coordinate of the point of CD is
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14 views
m2-m1m2m1
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15 views
m2-m11+m2m1
1 answer
14 views
The minor axis of an ellipse 9x2+4y2=36 is
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28 views
What is the equation of the directrix of the parabola whose equation is x2-30y=0 ?
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15 views
y = -sqrt(30)
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12 views
y=-7.5
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13 views
The equation of the tangent to the circle x2+y2-3x+4y=15 at the point (-1,2)
1 answer
13 views
y = (5/8)x + 21/8
1 answer
17 views
The equation of the parabola having vertex (0,0) along the x-axis and passing through(2,-1) is
1 answer
44 views
Find the centre of the circle, if the equation of the circle is given x2+y2+2x-6y-15=0. The center is
1 answer
21 views
Find the focus of the parabola equation y2+36=0 is
1 answer
16 views
Given that Z=…,-3,-2,-1,0,1,…, the elements of Z can also be called _____ numbers.
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15 views
A set of the form y=y/y≤4 is of ______intervals.
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22 views
y=y/y≤4 is _____ interval
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18 views
If = 14,700,-473,4644,84 . Then, Z is ____.
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27 views
If = 14,700,-473,4644,84 . Then, Z is ____.
Question 5 Select one: Bounded Natural Unbounded Closed
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19 views
B1=m/2<m<5 is a/an ________ interval.
Question 6 Select one: Closed-open Open-closed Open Closed
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37 views
The set of all real numbers EXCEPT, _____ numbers are of utmost importance in real analysis.
Question 7 Select one: Natural
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54 views
Every real number can be represented by a _______ decimal.
Question 8 Select one: Terminating Mantissa Non-terminating Fractional
1 answer
26 views
Suppose α and β are the roots of an equation:2x2+3x-1=0, then the product of root of the equation is
Question 9 Select one:
1 answer
22 views
The _____ value of a real number c is given byc, if c>0c, if c<0 .
Question 10 Select one: Incremental Difference Absolute True
1 answer
20 views
Side panel
NOUN Tutor Marked Assignment 2 (TMA2) Question 1 Not yet answered Marked out of 1.00 Flag question Question text A/an
1 answer
42 views
A/An ______ is a sequence in which each successive terms of the sequence are in equal ratio.
1 answer
25 views
Given the sequence 14,18,116,…, then r is _____.
Question 3 Select one:
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17 views
Suppose α and β are the roots of an equation:ax2+bx+c=0. Then, -ba is the _______ of roots.
Question 4 Select one: Sum product
1 answer
35 views
Simplify 3-4i1-2i
Question 5 Select one: 2i 1-2i -1-2i -1+2i
1 answer
11 views
Assignment 2 (TMA2)
Question 6 Not yet answered Marked out of 1.00 Flag question Question text If the first term of an A.P is 67
1 answer
50 views
The equation:x2-4x+5=0 has _____ roots.
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11 views
Which is the correct solution of x2+7x+12=0?
Question 8 Select one: -6 and-2 -4 and-3 -6 and-1 -5 and-2
1 answer
14 views
An Arithmetic sequence whose first term is 102 and common difference is -3 has its 7th term as _______.
1 answer
28 views
The sum of the first n ______ numbers is given by 1+2+3+…+n=n(n+1)2
Question 10 Select one: Rational Integer Complex Natural
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23 views
Suppose α and β are the roots of an equation:2x2+3x-1=0, then the product of root of the equation is
Question 1 Select one:
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22 views
Given that z1=3+2i and z2=4+3i then z1- z2.
Question 2 Select one: 1-i -1 -1-i i
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20 views
a+iba-ib=a2+b2, where i2=?
Question 3 Select one: +ve -1 0 1
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16 views
A ________ variable is of the form x+iy, where x and y are real numbers.
Question 4 Select one: irrational Integer real complex
1 answer
25 views
The radius of a circle y2+x2-14x-8y+56=0 is
Question 5 Select one: -4 -3 3 4
1 answer
17 views
If z7=4-3i, thenz7 is
Question 6 Select one: 5 -7 7 -5
1 answer
28 views
The equation of the circle with center 2,-3 and radius 4 is
Question 7 Select one: y2+x2-4x-6y-3=0 y2+x2-4x+6y-3=0
1 answer
12 views
Simplify i55
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10 views
If z3=3+2i and z4=4+3i. Then, z3 z4 is
Question 9 Select one: 6-17i 7+17i 5+16i 6+17i
1 answer
19 views
Construct the equation whose roots are 34 and -12
Question 10 Select one: 8x2-2x-3=0 8x2+2x-3=0 8x2-2x+3=0 8x2+2x+3=0
1 answer
48 views
8x^2 - 22x - 408 = 0.
1 answer
17 views
