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madreJ [45]
3 years ago
11

Which statement best explains acceleration? A. It is the total distance covered over a period of time. B. It is a change in velo

city over a period of time. C. It is a change in displacement over a period of time. D. It is a change in direction over a period of time.
Physics
2 answers:
tatuchka [14]3 years ago
8 0

I think the answer is C.

Mnenie [13.5K]3 years ago
4 0

C and D can be examples.  B is the whole definition.

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sukhopar [10]

Answer:

v=2.58\times10^8m/s

Explanation:

The index of refraction is equal to the speed of light c in vacuum divided by its speed v in a substance, or n=\frac{c}{v}. For our case we want to use v=\frac{c}{n}, which for our values is equal to:

v=\frac{c}{n}=\frac{299792458m/s}{1.16}=258441774.138m/s

Which we will express with 3 significant figures (since a product or quotient must contain the same number of significant figures as the measurement with the  <em>least</em> number of significant figures):

v=2.58\times10^8m/s

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3 years ago
Un coche inicia un viaje de 450 km a las ocho de la mañana con una velocidad media de 90 km/h. ¿A qué hora llegará a su destino?
Artyom0805 [142]

Answer:

Llegara a su destino a la 1:00 pm

Explanation:

Si el coche va a 90 km/h buscamos un numero q al multiplicarlo por 90 nos de 450. Entonces 90×5 = 450, si hacemos la cuenta desde las ocho de la mañana mas las 5 horas del viaje terminaria llegando a su destino a la 1:00 pm.

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What is a prediction
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An asteroid is a minor planet of the inner Solar System. Historically, these terms have been applied to any astronomical object orbiting the Sun.

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What is the net force on a bathroom scale when a 110 pound person stands on it? How do you know?
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