3 years ago

PLEASE HELP!! What is one health benefit of walking 10K steps a day?

Physics

1 answer:

Contact [7]3 years ago

3 0

Answer:

improve blood pressure

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A hiking trail is 150 meters long. A mountain lion can run the entire trail in 30 seconds.

konstantin123 [22]

Answer:

5 meters per second

explanation

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3 years ago

In a laboratory experiment, an ultrasound detector located at D is used to measure the distances of two moving objects, P and Q.

Tatiana [17]

D^2 = p^2 + q^2 - 2 pq cos D

d^2 = (4.24)^2 + (4.24)^2 - 2. (4.24) (4.24) cos 68

d^2 = 2 (4.24)^2 - 2. (4.24) (4.24) cos 68

d = 4.74

so the answer will be letter. C

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3 years ago

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This question is about waves. I need help. If you answer can you explain why is that answer, thanks.

Dimas [21]

Answer:

b or d

Explanation:

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3 years ago

The muzzle velocity of a rifle bullet is 800. m⋅ s −1 m⋅s−1 along the direction of motion. If the bullet weighs 27.0 g g , and t

11Alexandr11 [23.1K]

Answer:

1.98 × 10⁻³³m

Explanation:

It is given that,

Mass of the bullet, m = 27 g = 0.027 kg

Velocity of bullet, v = 800 m/s

The uncertainty in momentum is 0.20%. The momentum of the bullet is given by :

$p=mvp=0.027\times 800 = 21.6\ kg-m/s$

Uncertainty in momentum is,

$\Delta p=0.2\%\ of\ 21.6\\\Delta p=0.0432$

We need to find the uncertainty in position. It can be calculated using Heisenberg uncertainty principal as :

$\Delta p.\Delta x\geq \dfrac{h}{4\pi}\Delta x=\dfrac{h}{4\pi \Delta p}\Delta x=\dfrac{6.62\times 10^{-34}}{4\pi \times 0.0432}\Delta x=1.98\times 10^{-33}\ m$

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4 years ago

which of the following is the name of the process scientists use to gain knowledge abut the physical world

raketka [301]

The scientific method is the process that scientists use to answer question about the world.

7 0

3 years ago