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katen-ka-za [31]
3 years ago
7

What factors contribute to global winds

Physics
1 answer:
serg [7]3 years ago
3 0
Temperature and elevation, if it is cold in Idaho and warm on the eastern end of a mountain side in california (or if warm air is going in that direction) then the cold air, being more dense, will go towards california while the cold air in Idaho will become warm. Same goes for the rest of the world 
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A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s2 for g. Use 1000 kg/m3 as the
Sergio039 [100]

Answer:

W = 1.06 MJ

Explanation:

- We will use differential calculus to solve this problem.

- Make a differential volume of water in the tank with thickness dx. We see as we traverse up or down the differential volume of water the side length is always constant, hence, its always 8.

- As for the width of the part w we see that it varies as we move up and down the differential element. We will draw a rectangle whose base axis is x and vertical axis is y. we will find the equation of the slant line that comes out to be y = 0.5*x. And the width spans towards both of the sides its going to be 2*y = x.

- Now develop and expression of Force required:

                                             F = p*V*g

                                             F = 1000*(2*0.5*x*8*dx)*g

                                             F = 78480*x*dx

- Now, the work done is given by:

                                             W = F.s

- Where, s is the distance from top of hose to the differential volume:

                                             s = (5 - x)

- We have the work as follows:

                                            dW = 78400*x*(5-x)dx

- Now integrate the following express from 0 to 3 till the tank is empty:

                                           W = 78400*(2.5*x^2 - (1/3)*x^3)

                                           W = 78400*(2.5*3^2 - (1/3)*3^3)

                                           W = 78400*13.5 = 1058400 J

 

5 0
3 years ago
6) What force should be applied to compress a spring
valina [46]

Answer:

26.6N

Explanation:

Using Hooke’s law

F = kx

Where F = force

K = spring constant

x = displacement

From the question

F= ?

K = 140 N/m

x = 0.19m

Therefore,

F = 140 x 0.19

= 26.6N

7 0
3 years ago
is to the east. (i) Automobile A travels 50 km due east. (ii) Automobile B travels 50 km due west. (iii) Automobile C travels 60
kenny6666 [7]

Complete Question:

Each of the following trips lasts exactly one hour. The positive direction is to the east.

(i) Automobile A travels 50 km due east. (ii) Automobile B travels 50 km due west. (iii) Automobile C travels 60 km due east, then turns around and travels 10 km due west. (iv) Automobile D travels 70 km due east. (v) Automobile E travels 20 km due west, then turns around and travels 20 km due east. (a) Rank the five trips in order of average x-velocity from most positive to most negative. (b) Which trips, if any, have the same average x-velocity? (c) For which trip, if any, is the average x-velocity equal to zero?

Answer:

a) 1. (iv) 2.) (i) and (iii). 3. (v) 4.(ii)

Explanation:

By definition, the average velocity, can be expressed as the total displacement (the difference between the final and initial position), divided by the time interval during which we define the displacement.

We can put these words in an equation format as follows:

vavg,x = \frac{xf-xo}{t-to}

If we choose x₀ = 0 and t₀ = 0, the average velocity is just the final position over one hour.

The final positions, in the five trips, are as follows:

(i) = +50 Km (2nd)

(ii) = -50 Km (4th)

(iii)  + 60 Km -10 Km = + 50 km (2nd)

(iv) = + 70 km (1st)

(v) = -20 km + 20 Km = 0 (3rd)

b) As stated above, the trips (i) and (iii) have the same average x-velocity.

c) As stated above, in trip (v) as the total displacement is 0, average -velocity is 0 also.

5 0
3 years ago
A particle is acted upon by a net force F=F0e-kx, where F0 and k are constants. If the particle has velocity equal to zero at x=
yuradex [85]

Answer:

F₀ /k .

Explanation:

Force is variable

F=F₀ e^{-kx}

kinetic energy = work done by force

= ∫ F dx

= ∫F₀ e^{-kx} dx

= F₀ e^{-kx} / -k

E =  F₀ e^{-kx} / -k

=  -F₀ /(k e^{kx} )

For maximum E , e^{kx} should be minimum ,

e^{kx} is minimum for x = 0

maximum value of E = F₀ /k .

5 0
3 years ago
Answer with step by step​
Archy [21]
If 'C' and 'R' represent capacilance and resistance respectively then the dimensions of RC are:


A:M^0L^0T^2
B:M^0L^0T^1
C:Ml^1
D:Ml^-1T^2
E;None of these
7 0
3 years ago
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