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3 years ago

Hypertension is called "the silent killer" because __________.

1 answer:

5 0

Hypertension is called the silent killer because most patients with high blood pressure have no symptoms to alert them to the elevated pressure. But over time,high blood pressure increases the risk of serious problems such as stroke, congestive heart failure, heart attack, and kidney failure.

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Check the correctness of P=√2mE/t where the symbols have usual meaning.

uysha [10]

Answer:

Check the correctness of the relation c=1 √μ0∈0 where the symbols have their usual meaning. check-circle.

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3 years ago

all bearings are made by lebng spherical drops of molten metal fall inside a tall tower – called a shot tower – and solidify as

Wewaii [24]

Answer:

Part b)

h = 78.5 m

Part c)

v = 39.24 m/s

Explanation:

Part b)

If ball need t = 0 to t = 4 s then height of the tower is the total displacement of the ball in t = 4 s interval

here if ball start from rest

then its displacement is given as

$\Delta y = \frac{1}{2}gt^2$

$\Delta y = \frac{1}{2}(9.81)(4^2)$

$\Delta y = 78.5 m$

Part c)

Speed of the bearing at the end of the motion of the ball

$v_f = v_i + at$

$v_f = 0 + (9.81)(4)$

$v_f = 39.24 m/s$

7 0

3 years ago

A pulley system has an efficiency of 87.5 percent.

Gelneren [198K]

Answer:

work done on desk = m g h = 105 * 9.81 * 2.46 = 2534 Joules

Explanation:

so work in = 2534 / 0.875 = 2896 Joules

that is your 648 times distance your hand moved holding the rope

2896 = 648 * x

4.47 meters

I think maybe a typo, 648 N is too big, maybe 64.8 ? Any block and tackle system does better than that.

7 0

3 years ago

Which are made of matter? Check all that apply.

Ber [7]

Answer:

Everything around you is made of matter, including the clothes you wear, the food you eat, and everything you touch. Even the air you breathe is made of matter. Air is a mixture of several kinds of atoms and molecules, including oxygen molecules. Skin is mostly made of collagen molecules.

Explanation:

hope this helps you

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3 years ago

Rub one balloon with wool, fur, or hair and the other balloon with a piece of plastic wrap. Again, suspend the two balloons so t

tester [92]

Answer:

Attract

Explanation:

8 0

3 years ago

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