Answer:
Yes, force is also a vector quantity. It has both a direction and a magnitude.
1 centimetres = 10 millimetres
178 centimetres = 10 × 178 = 1780 millimetres
First and second options are incorrect
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1 metres = 100 centimetres
178 centimetres = 178 ÷ 100 = 1.78 metres
Third option is correct
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1 cm = 10 mm
1 mm = 1000 micrometres
1 cm = 10000 micrometres
178 cm = 178 × 10⁴ micrometres
Fourth option is incorrect
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1 kilometre = 1000 metres
1 metre = 100 cm178 cm = 178 ÷ 100 = 1.78 metres
1.78 metres = 1.78÷1000 = 1.78 × 10⁻³ kilometres
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Fifth option is incorrect
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Correct answer: third option
Net force = Pull force - Friction (Opposing force) = 700 - 215 = 485 N
Answer:
L = 1.06 m
Explanation:
As per work energy theorem we know that work done by all forces must be equal to change in kinetic energy
so here we will have
now we know that
initial and final speed of the book is zero so initial and final kinetic energy will be zero
here we know that
k = 250 N/m
x = 0.250 m
m = 2.50 kg
now plug in all data in it
now we have