2 answers:
For Science fair project you can do convection current
Explanation:
Show how to do the process
and then make a model to demonstrate
Materials required:
Potassium Permanganate,beaker,bunsen burner,water and retort stand
Answer:
Explanation:
You can make a projector using convex lens and a mobile phone back of it
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It depends on where the cat is applying the force and how much the force is .. after all where and at what is distance from the axis of rotation of the door
Answer:
See below
Explanation:
a) 500 cm^3 * .90 gm/cm^3 = 450 gm of oil
b) 450 gm + 80 gm = 530 gm of oil and bottle
Answer: The brightest star
Explanation: The brightest start gives out more energy
R because A-B has 7R but C-d only has 6r so you need to add another r
