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3 years ago

Wind blows from what pressure to what pressure

1 answer:

5 0

This is called the coriolis effect. So in the northern hemisphere, winds blow clockwise around an area of high pressure and counter-clockwise around low pressure. Not only do differences in air pressure help determine wind speed and direction, they help forecast precipitation and clear weather.

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A wood pipe having an inner diameter of 3 ft. is bound together using steel hoops having a cross sectional area of 0.2 in.2 The

WINSTONCH [101]

Answer:

31.67 in

Explanation:

Given:

Diameter of the pipe, D = 3ft = 36 in

cross-sectional area of the steel = 0.2 in²

Note: Refer to the figure attached

From the free body diagram represented in the figure, we have

ΣFx = 0

pressure × projected area = 2 × Force in steel

Now, the projected area = spacing (s) × diameter of the wood pipe

force in steel = stress in steel (σ) × cross-sectional area of the steel

on substituting the values we get

4 ksi × (s × 36 in) = 2 × σ × 0.2 in²

also, allowable hoop stress = 11.4 ksi

thus,

σ = 11.4 ksi = 11.4 × 10³ psi

therefore, we have

4 psi × (s × 36 in) = 2 × 11.4 × 10³ psi × 0.2 in²

thus,

s = 31.67 in

hence the maximum spacing is 31.67 in

3 0

4 years ago

Well into the twentieth century, many scientists believed the ocean floor was

blagie [28]

Many scientist believed the ocean floor is FLAT

3 0

4 years ago

Read 2 more answers

You are riding n a bus moving slowly through heavy traffic at 2.0 m/s. You hurry to the front of the bus at 4.0 m/s relative to

kati45 [8]

Answer:

6 m/s

Explanation:

if the bus and you are moving in the same direction, then you add your speeds together

7 0

3 years ago

Suppose that the resistance between the walls of a biological cell is 4.2 × 109 Ω. (a) What is the current when the potential di

Lady_Fox [76]

Answer:

(a) Current will be $17.857\times 10^{-12}A$

(b) Number of ions will be $8.258\times 10^6$

Explanation:

We have given that resistance of the biological cell $R=4.2\times 10^9ohm$

(a) We have given potential difference of 75 mV

So $V=75\times 10^{-3}volt$

From ohm's law we know that current is given by

$i=\frac{V}{R}=\frac{75\times 10^{-3}}{4.2\times 10^9}=17.857\times 10^{-12}A$

(b) We have given time t = 0.74 sec

We have to find the charge

We know that charge is given by Q = it, here i is current and t is time

So charge will be $Q=17.857\times 10^{-12}\times 0.74=13.214\times 10^{-12}C$

So number of ions will be $n=\frac{13.214\times 10^{-12}}{1.6\times 10^{-19}}=8.258\times 10^6$

6 0

4 years ago

Approximately how many calories are in one gram of carbohydrates?

Rina8888 [55]

Answer:

<h2>4 calories</h2>

Explanation:

Carbohydrates are known as energy giving foods and they are contained in our diets no matter how small. Other components of foods are protein, fat and oil, vitamin, water etc. A calorie is a unit of energy. It tells us the amount of energy the weight of any food contains. Knowing the amount of calories of food we are taking in helps us to monitor our weight. Each component of food have their own calories depending on the weight of the food component.

For carbohydrate as a component of food,<em> 1gram of carbohydrates contains 4 calories</em>. With this conversion, we can therefore calculate the calories of carbohydrate we are taking in by taking the weight of the food we want to eat.

<em>Hence, approximately 4 calories are in one gram of carbohydrates</em>

6 0

4 years ago