Physic - Modern physic

The amount of energy released when 0.5kg of uranium is burnt completely?

Options:

A) 1.5 x 10^8

B) 6.0 x 10^16

C) 4.5 x 10^16

D) 1.5 x 10^16

Solution:

E= Mc^2

E= (0.5 x 3x10^8)^2

E = 4.5 x 10^16

Correct answer is C

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Standard form - questions

▶️ Convert to standard form 1️⃣ Write 0. 000546 in standard form. A. 5460000 B. 546.0000 C. 5.460000 X 10⁴ D. 5.46 X 10¯⁴ 2️⃣ Write 18 in standard form . A. 18 X 10¹ B. 1.8 X 10° C. 18.0 X 10² D. 1.8 X 10¹ 3️⃣ Write 8000 in standard form. A. 8 X 10³ B. 0.8 X 10^8 C. 8000.0 X 10³ D. 8.0 X 10^8 4️⃣ Write (12)² in standard form. A. 1.23 X 10³ B. 12.3 X 10² C. 1.44 X 10² D. 4.41 X 10² 5️⃣ Write 00.102 in standard form. A. 0.0102 X 10³ B. 0.102 X 10³ C. 1.2 X 10¯² D. 1.02 X 10¯² 6️⃣ Write 71 + 0.5 + 0.002 in standard form. A. 7.1502 X 10¹ B. 7.152 X 10¯⁴ C. 7.7 X 10¹ D. 7.7 X 10¯⁴ 7️⃣ Solve for x in the expression 70x + 25 =30. Leave your answer in standard form. A. 7.1 × 10¯² B. 7.1 × 10² C. 7.85 × 10² D. 7.85 × 10¯² 8️⃣ What is 6.7 × 10⁴ written as an ordinary number? A. 67104 B. 67000 C. 0.0066 D. 670 9️⃣ What is 3 × 10¯² written as an ordinary number? A. 300 B. 3100 C. 0.031 D. 0.03 1️⃣0️⃣ How is 45,000 written in standard form? A. 45 × 10³...

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Indefinite Pronoun - English

INDEFINITE PRONOUN These are pronouns that do not refer to specific persons or things, rather they refer to them in general. E.g words that ends with body, thing, one i.e anybody, everybody, nobody, somebody, anything, everything, nothing, something, anyone, everyone, no-one, someone… Rules: § All indefinite pronouns takes singular verb e.g No-one knows my name. Everything is ready § You can add (‘s) to an indefinite pronoun to make it possessive e.g What I am eating is nobody’s business. § Indefinite pronouns that ends with ‘body’ are used for animate things (living things) while those that ends with ‘thing’ areused for inanimate things (non-living things). uo PERSONAL PRONOUN POSSESSIVE PRONOUN

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