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3 years ago

14

Your mass is 65 kg. you stand on a bathroom scale in an elevator on earth. (a) what force would the scale exert when the elevato

r moves up at a constant speed?

1 answer:

erik [133]3 years ago

4 0

I think you would use F = ma
F = 65*10
F = 650N
(The 10m/s is from acceleration due to gravity)

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A block of a plastic material floats in water with 42.9% of its volume under water. What is the density of the block in kg/m3?

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2 years ago

What would be the answer for this and how?

Veronika [31]

Answer:

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First, we calculate the spring constant of a single spring:

$k = \frac{F}{\Delta x}\\$

where,

k = spring constant of single spring = ?

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Δx = extension = 4 cm = 0.04 m

Therefore,

$k = \frac{10\ N}{0.04\ m}\\k = 250\ N/m\\$

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Hence, the correct option is:

<u>B. 6 cm</u>

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2 years ago

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2 years ago

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3 years ago