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Questions (23)

why potassium permegnate is colourd
1. 1 answer
2. 367 views
why we add acid to the standardization of sodium thiosulphate solution?
1. 2 answers
2. 727 views
why we not use HNO3 and HCl in iodometry
1. 1 answer
2. 451 views
Outline the following synthesis:a) 2 – methyl propene -> 2-methyl-2-propanol. b) 3 –ethylpentene -> carbon dioxide, water
1. 1 answer
2. 800 views
A 2cm high object is placed 3cm in front of a concave mirror. If the image is 5cm high and virtual, what is the focal length of
1. 1 answer
2. 734 views
Light of certain wavelength in a vacuum has wavelength of 438 nm if it propagates in water and 390 nm if it propagates in
1. 1 answer
2. 772 views
An insect of height 1.5 cm is 13cm from a converging lens of focal length 13.5 cm. Determine the position, height and properties
1. 1 answer
2. 395 views
The convex meniscus lens has a 15cm radius for the convex surface and 20cm for the concave surface. The lens is made of crown
1. 3 answers
2. 1,035 views
A convex meniscus lens is made of glass with refractive index, n= 1.5. The radius of curvature of the concave surface is 46.2 cm
1. 5 answers
2. 3,402 views
Two converging lenses, having focal length 5 cm and 10 cm respectively, are placed25cm apart. An object is placed 10 cm in front
1. 1 answer
2. 689 views
A monochromatic light illuminates a double slits system with a slit separation, d =0.3 mm. The maximum of the first order occurs
1. 2 answers
2. 640 views
Light from sodium lighting passes through a single slit, then through double slit system and is projected on a screen. The
1. 1 answer
2. 690 views
A thin layer of liquid methylene iodide (n=1.756) is sandwiched between two flat parallel plates of glass (n=1.50). What must be
1. 1 answer
2. 906 views
A student investigates the interference of light in a Young’s double slit experiment.i). Explain why there is no interference
1. 1 answer
2. 813 views
A small boy blows a big soap bullet at a birthday party where the room is illuminated with yellow light of wavelength 600 nm.a)
1. 1 answer
2. 645 views
3-pentanol is heated with sulphuric acid (H2SO4) to become compound M. Compound M is reacted with Br2/ H2O to form Compound N.Ou
1. 3 answers
2. 3,389 views
Log243-log64-log3 with the base 3,2,root3 give me a simplify of these
1. 4 answers
2. 2,963 views
What minimum amount will have to be deducted today to a fund earning 8.7% compounded quarterly, if the first quarterly payment
1. 1 answer
2. 390 views
calculate the amount that will be accumulated after 20 years if $1600 is invested at the beginning of every six months at 13.5%
1. 1 answer
2. 401 views
a 18 year loan requires month ends payments of $587.69 including interest at 18.4% compounded monthly. what wil be the balance
1. 1 answer
2. 458 views
A mass of 2000g is drop from a height of 10m.what is the work done by the mass
1. 1 answer
2. 447 views
how to solve the square root of 15.59
1. 2 answers
2. 673 views
Suppose you have to establish a new company. Suggest in which item or items company should deal. How much sale of the item is
1. 4 answers
2. 807 views

Answers (3)

123m 280m
sorry interest is 8.4%
do it by yourself :)

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