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Sam needs to make a drink from orange cordial and lemonade in the ratio 1:9. How much orange cordial does he need to make 1500ml?

1 portion of orange cordial is mixed with 9 portions of lemonade There are 10 portions in total one-tenth of the total volume would be the volume of orange cordial needed (1/10) * 1500 = 150 Therefore 150ml ...
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Answered by Oluwatobi O. • Maths tutor
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What is the sliding filament theory of muscle contraction?

There are two main muscle filaments in muscle fibres: Actin and myosin filaments . Actin filaments are thin and have binding sites for the globular heads of myosin filaments. Myosin filaments are thick and f...
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Answered by Kasia F. • Biology tutor
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Circut is arranged in a loop, with resistor (5 ohm), power source(2V), resistor (3 ohm), and another power source (3V) connected subsequently. What is the voltage on 5ohm resistor?

The questions is constructed to show, that the order of devices do not affect the currents or voltages. 5ohm / ( 3 + 5)ohm = x/ 2V +5V x = 35/8 V = 4 3/8V
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Answered by Anna W. • Physics tutor
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a bat emits sound waves with a range of wavelengths. Some of the sound waves will be diffracted by the insect. Complete the following sentences to explain why. [2 marks] Diffraction is caused by the sound waves _______________________________________

spreading out
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Answered by Ralph T. • Physics tutor
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Take quadratic equation x^2-6x+14=0 and its solutions a and b. What is a/b+b/a?

In this kind of exersise it is easy to use Viète's formula for quadratic equations: Let: a+b = S a b=P then x 2 -Sx + P=0 In our case, S=6 and P=14 by multiplying the fractions we get: (a a)/(a b)+(b b)/(a b...
AM
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