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3 years ago

10

When a net force of 17.0 newtons is applied to a dictionary placed on a frictionless table, it accelerates by 3.75 meters/second

Æ. What is the mass of the book?

1 answer:

4vir4ik [10]3 years ago

8 0

Force = (mass) x (acceleration) (Newton's second law of motion)

Divide both sides of the equation by 'acceleration', and you have

Mass = (force) / (acceleration)

Mass = 17 newtons / 3.75 meters per second-sqrd = 4.533 kilograms (rounded)

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$(1). \: \:\beta =10 log(\dfrac{I}{I_0})$

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$10^{10}= \dfrac{r_0^2}{25}$

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$\beta = 10log(\dfrac{25*10^{10}}{r^2})$

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$85 = 10log(\dfrac{25*10^{10}}{r^2})$

$8.5 = log(\dfrac{25*10^{10}}{r^2})$

take both sides to exponents and we get:

$10^{8.5} =10^{ log(\dfrac{25*10^{10}}{r^2})}$

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