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What are the various components of \(E=mc^2\)?
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What are the various components of \(E=mc^2\)?What are the various components of \(E=mc^2\)? ...
by MathsGee Platinum
(103,042 points)
asked in Mathematics Jan 11
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A child weighing 50 Newtons is on a swing. He goes from a minimum height of 0.2 meters to a maximum height of 1.5 meters. His maximum speed is closest to:

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A 10 kilogram ball falls from a height of 5 meters and rebounds from the floor to a height of 3 meters. The energy lost by the ball is:
1 answer 77 views
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A ball falling vertically from rest for 3 seconds travels very nearly:
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A ball falling vertically from rest for 3 seconds travels very nearly:A ball falling vertically from rest for 3 seconds travels very nearly: w) 14.7 meters x) 29.4 meters y) 44.1 meters z) 88.2 meters ...
by Digitized Wooden
(1,150 points)
asked in Physics Oct 5, 2021
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A worker lifts a 10 kilogram block a vertical height of 2 meters. The work he does on the block is:
1 answer 98 views
A worker lifts a 10 kilogram block a vertical height of 2 meters. The work he does on the block is:A worker lifts a 10 kilogram block a vertical height of 2 meters. The work he does on the block is: w) 5 Joules x) 20 Joules y) 49 Joules z) 200 J ...
by Digitized Wooden
(1,150 points)
asked in Physics Oct 5, 2021
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A ball leaves a girl's hand with an upward velocity of 6 meters per second. What is the maximum height of the ball above the girl's hand?
1 answer 58 views
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The height of an isosceles triangle is \((18-x) \mathrm{mm}\) and the base is \((20+2 \mathrm{x}) \mathrm{mm}\). Determine \(\times\) for a maximum area.

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The mean and median of Al's $n=3$ observations both equal 10. The mean and median of Bev's $n=5$ observations both equal 18 .
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How would removing the outlier affect the mean of the following data: 1200, 2400, 2400, 2500 and 9000?
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Which measure of central tendency would best depict the following data: 10, 200, 200, 300, 325, 350 and 400? a) Mean b) Median c) Mode

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Which of the following measures of central tendency does an outlier affect the most? a) Mean b) Median c) Mode
1 answer 300 views
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A class has 67 pupils. A teacher wants to form groups of 4 pupils each.
0 answers 85 views
A class has 67 pupils. A teacher wants to form groups of 4 pupils each.A class has 67 pupils. A teacher wants to form groups of 4 pupils each. (a) How many groups were formed in the class? (b) How many students remain w ...
by Pieter SIlver Status
(18,083 points)
asked in Mathematics May 24, 2021
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A school water tank holds 100 000 litres of water. P5 pupils use 12 500 litres and P6 pupils use 67 500 litres. How much water remains in the tank?
0 answers 69 views
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The heights of 20 children were measured (in centimetres) and the results were recorded. The data collected is given in the table below.
1 answer 356 views
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The surface area of a cube is $96 \mathrm{~cm}^{2}$. Determine the volume of the cube in $\mathrm{cm}^{3}$.
1 answer 91 views
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A ball of mass $m$, falling vertically downwards, hits the floor at a speed $v$ and bounces vertically upwards at a speed $0,75 \mathrm{v}$.
1 answer 109 views
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A triangle has a base of 6 cm and a perpendicular height of 2 cm. Determine its area.
1 answer 619 views
A triangle has a base of 6 cm and a perpendicular height of 2 cm. Determine its area.A triangle has a base of 6 cm and a perpendicular height of 2 cm. Determine its area. ...
by MathsGee Platinum
(103,042 points)
asked in Mathematics Apr 4, 2021
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Pot A has 15 glasses of water. Pot B holds thrice as much water as pot A. How many glasses of water are needed to fill Pot B.
0 answers 78 views
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What is the volume of this 3D composite solid.
1 answer 110 views
What is the volume of this 3D composite solid.What is the surface area of a cylinder stacked on top of a rectangular prism. If the length of the prism is 7ft, the width is 5ft, and the height is 4 ...
by MathsGee Platinum
(103,042 points)
asked in Mathematics Mar 15, 2021
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Which mass is being referred to in E=mc^2?
0 answers 61 views
Which mass is being referred to in E=mc^2?Which mass is being referred to in $E=mc^2$? ...
by MathsGee Platinum
(103,042 points)
asked in Physics Feb 14, 2021
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A football of mass 0.42kg is kicked to a height of 10m. What is its gain of potential energy?
1 answer 236 views
A football of mass 0.42kg is kicked to a height of 10m. What is its gain of potential energy?A football of mass 0.42kg is kicked to a height of 10m. What is its gain of potential energy? ...
by MathsGee Platinum
(103,042 points)
asked in Physics Oct 15, 2020
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