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Afia

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Why should boys help in the kitchen
1. 2 answers
2. 239 views
If 1/3 of a number is added to 1/10 of same number, the result is 16. Find the number
1. 2 answers
2. 79 views
A helium-neon laser (with light wavelength 633 nm) shines through a single slit of width 8.0 × 10-6 m onto a screen. What is
1. 1 answer
2. 349 views
A 20 kg mass is held above a trampoline.a) What is the gravitational energy of the 20 kg ball at its apex 2 m above a
1. 1 answer
2. 295 views
A cyclist and her bicycle have a combined mass of 75 kg. She comes to a complete stop at the crest of 15 m high hill, then coast
1. 3 answers
2. 1,026 views

1.What is the gravitational energy (relative to the unstretched surface of the trampoline) of the 20kg ball at its apex 2.0m above the trampoline? KE = GPE= mgh m g h = 20 x 10 x 2 Joules= 400 J The kinetic energy just before it hits the trampoline is
Sam makes some read rolls. He gives 2/5 of the bread rolls to his neighbor and 4/9 of the remainder to his cousin. He has 15 bread rolls left. How many bread rolls does Sam make?
Lily receives 30 messages on her cell phone. Of those messages, 1/5 are picture messages and 7/8 of the remainder are text messages. How many text messages does she receive?
Priya has a piece of string 5/6 yard long. She cuts 3/5 of the piece of string for her craft. What is the length of the string left?
With the discovery of fire man stated cooking food which led the increase of a large variety of food items.
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