18 Answered Questions for the topic Grade 12

#### What does relative lines mean?

If I have to draw to different line a graph that represent two different thing. One is increasing x2 faster than the other. What does it mean by draw relative lines?

#### Is this correct? - problem relating to a pendulum

Predict the time for 20 oscillations of a 1.0m long Pendulum on Planet U.We know L = 1.0m g=6.91m/s2T=2π N √L/gT=2π (20) √1.0/6.91= 150.18297T = 150 seconds If its correct than yay if not please...
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#### Question regarding Pendulum on Fictional Planet

This one is a long as its all related. so confusing ...What would the time for 20 oscillations of a 1.0m long pendulum be on Planet X?Given :L = 1.0mAcceleration due to gravity on Planet X =...
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#### How do I rearrange t^2 = 4pi^2 L/g in y=mx format?

T2 = 4πi2 L/g How do I derive formula to make:L = y T2 = x 4πi2/g = m ?so far I have :L / T2 = g x 4π2Is this correct ?

#### How would using a mass on the end of a pendulum string 3 times longer impact results?

Another very confusing thing. I know that T2 = 3L which is also T = √3L. that's where my understanding stops :( I don't understand how it will impact my overall results ...A detailed explanation...
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#### Why is knowing the pendulum length required for one second be important?

Hello!This is related to a pendulum experiment.I know that for 1 period the length would be 0.25mWhat I don't know is why would this information be useful??A detailed explanation would be very...
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#### How to arrange t^2 = 4pi^2 L/g in y=mx format?

How do I derive formula to make L = y , t^2 = x and 4pi^2 L/g = m ? A detailed answer would be very appreciated please and thank you ! :)

07/22/21

#### How to balance the following redox reaction using half-reaction method

How to balance the following redox reaction using half-reaction method under basic conditionsSn(OH)42- + MnO4- ---> MnO2 + Sn(OH)62-thank u for taking the time to help me with this question

07/16/21

#### solve for x, 1/5-logx + 2/1+logx = 1

07/15/21

#### Grade 12 Chemistry (Energy)

when 0.0200 mol of solid calcium oxide is dissolved in sufficient water 650 J of energy is released.How much energy would be released if 3g of the solid was dissolved?

06/15/21

#### I need help with 2 calc-related-questions.

Determine the value of k such that u and v are orthogonal. u = [2, k, -1] and v = [3, -2, 7]
Determine the value(s) of k such that (2k, 3, k+1) x (k-1, k, 1 = (1, -2, 2)
The x stands as a tip to...
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#### Why Aluminum Steel and Foil are susceptible to corrosion? And why it is important to protect these products from corrosion?

Environmental Impacts of Corrosion PreventionIs there any any negative environmental impact created by the corrosion protection techniques used for these two products?

10/02/15

#### When 3x^2 + 10x - 3 is divided by x+k, the remainder is 5. What is k?

It is polynomial functions. PLEASE HELP!!! ASAP!!!!!!!!! THANK YOU.

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