1. Explain the importance of doing muscular strength and muscular endurance activities.

2 answers:

8 0

Because just lifting heavy weights is tearing down your muscles and so doing an insurance workout lets your muscles come back bigger and stronger.

Maurinko [17]3 years ago

3 0

It builds your muscles, strengthens your flexibility, keeps you in shape, gets your blood moving in your body, etc.

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Which is an example of a trace fossil?

hodyreva [135]

Answer: The correct answer is A). Animal burrow because burrow fossils represent the preserved byproducts of behavior rather than physical remains, they are considered a kind of trace fossil. One common kind of burrow fossil is known as Skolithos, and the similar Trypanites, Ophiomorpha and Diplocraterion.

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2 years ago

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Suppose you are measuring double‑slit interference patterns using an optics kit that contains the following options that you can

svetlana [45]

Answer:

3.6 m

Explanation:

$\lambda_R = 650 \ nm\\\\\lambda_R = 650*10^{-9} m\\\\L \ should \ be \ minimum \\\\i.e \ 0.25 \ mm\\\\= 0.25 *10^{-3} m$

$\lambda_R = 700 \ nm\\\\\lambda_R = 700*10^{-9} m\\\\$

Also

$\beta = 1 \ mm \ fringe \ width$

$D_{min} = \frac{\beta d}{\lambda}\\\\D_{min} = \frac{10^{-3}*0.25*10^{-3}}{700*10^{-9}}\\\\D_{min} = 3.57 \\D_{min} = 3.6 m$

Therefore, the minimum distance L you can place a screen from the double slit that will give you an interference pattern on the screen that you can accurately measure using an ordinary 30 cm (12 in) ruler. = 3.6 m

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3 years ago

Se o Universo tem uma idade definida, de aproximadamente 13,7 bilhões de anos, o que existiu antes do big-bang?

UkoKoshka [18]

Ninguém sabe exatamente

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2 years ago

ithout heat from the Sun, the water cycle would A) reverse. B) not work. C) slow down. D) not be affected.

lawyer [7]

B) Not work since decrease in temperature wouldnt cause evaporation or reverse in cycle.

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3 years ago