A spaceship is traveling at 2.5 × 10⁷ meters per second. How far does it travel in 4 × 10³ seconds?
a) 1 × 10¹¹ meters
c) 1 × 10⁹ meters
b) 1 × 10¹⁰ meters
d) 1 × 10⁸ meters
A bacteria culture starts with 3 × 10⁴ bacteria and doubles every hour. How many bacteria will there be after 3 hours?
a) 2.4 × 10⁵ b) 1.2 × 10⁵
c) 6 × 10⁴
d) 9 × 10⁴
The sun emits 3.8 × 10²⁶ joules of energy per second. How much energy is emitted in 2 × 10⁵ seconds?
a) 7.6 × 10³¹ joules
c) 7.6 × 10³⁰ joules
b) 7.6 × 10³² joules
d) 7.6 × 10²⁹ joules
A factory produces 6 × 10⁶ microchips per month. How many microchips are produced in 5 × 10² months?
a) 3 × 10⁹ b) 3 × 10⁸
c) 3 × 10⁷ d) 3 × 10¹⁰
A virus measures 4 × 10⁻⁸ meters in diameter. What is the total length of 3 × 10⁶ viruses placed in a row?
a) 1.2 × 10 ¹ meters
c) 1.2 × 10 ² meters
b) 1.2 × 10⁰ meters
d) 1.2 × 10 ³ meters
The charge of an electron is about 1.6 × 10⁻¹⁹ coulombs. What is the total charge of 5 × 10¹⁸ electrons?
a) 8 × 10 ¹ coulombs
b) 8 × 10 ² coulombs
c) 8 × 10⁰ coulombs d) 8 × 10 ³ coulombs
A train moves at 3 × 10² kilometers per hour. How far does it travel in 4 × 10³ hours?
a) 1.2 × 10⁶ kilometers b) 1.2 × 10⁵ kilometers
c) 1.2 × 10⁷ kilometers d) 1.2 × 10⁴ kilometers
A laser beam cuts 5 × 10² millimeters of material per second. How much does it cut in 2 × 10³ seconds?
a) 1 × 10⁶ millimeters b) 1 × 10⁵ millimeters
c) 1 × 10⁷ millimeters d) 1 × 10⁴ millimeters
A machine can print 7 × 10³ pages per minute. How many pages does it print in 3 × 10² minutes?
a) 2.1 × 10⁶ b) 2.1 × 10⁵
c) 2.1 × 10⁴ d) 2.1 × 10⁷
A supercomputer can process 8 × 10¹² calculations per second. How many calculations does it perform in 2 × 10⁴ seconds?
a) 1.6 × 10¹⁷ b) 1.6 × 10¹
c) 1.6 × 10¹⁵ d) 1.6 × 10¹⁸
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