Ask question

Ask question

All categories

3 years ago

6

What is the change in air pressure a good indicator of a change in temperature be a change in the weather I decrease in humidity

D an increase in the chance of rain

1 answer:

Elza [17]3 years ago

3 0

Answer:

A

Explanation:

warm air rises creating low presure

cold air sinks creating high presure

so this means that temprature is realated to presure.

You might be interested in

A 800-gram grinding wheel 27.0 cm in diameter is in the shape of a uniform solid disk. (We can ignore the small hole at the cent

SSSSS [86.1K]

Explanation:

d = Diameter of wheel = 27 cm

r = Radius = $\frac{d}{2}=\frac{27}{2}=13.5\ cm$

m = Mass of wheel = 800 g

$\omega_i$ = Initial angular velocity = $245\times \frac{2\pi}{60}\ rad/s$

Equation of rotational motion

$\omega_f=\omega_i+\alpha t\\\Rightarrow \alpha=\frac{\omega_f-\omega_i}{t}\\\Rightarrow \alpha=\frac{0-245\times \frac{2\pi}{60}}{50}\\\Rightarrow \alpha=-0.51312\ rad/s^2$

Moment of inertia is given by

$M=\frac{1}{2}mr^2\\\Rightarrow M=\frac{1}{2}\times 0.8\times 0.135^2\\\Rightarrow M=0.00729\ kgm^2$

Torque is given by

$\tau=I\alpha\\\Rightarrow \tau=0.00729\times -0.51312\\\Rightarrow \tau=-0.0037406448\ Nm$

The torque the friction exerts is -0.0037406448 Nm

For more information on torque and moment of inertia refer

brainly.com/question/13936874

brainly.com/question/3406242

7 0

3 years ago

A train can speed up at a uniform rate of 0.15 m/s2. In what minimum distance can

goblinko [34]

Answer:

d = 2083.33 m

Explanation:

Given that,

Acceleration of the train, a = 0.15 m/s²

The initial speed of the car, u = 0\

Final velocity, v = 25 m/s

We need to find the minimum distance covered by the train. Let it is d. Using third equation of kinematics as follows :

$v^2-u^2=2ad\\\\d=\dfrac{v^2-u^2}{2a}\\\\d=\dfrac{(25)^2-0}{2\times 0.15}\\\\d=2083.33\ m$

So, the minimum distance is 2083.33 m

3 0

4 years ago

3 ways pollution gets into neighborhoods

SashulF [63]

Answer:

1. Leaving trash on the ground and not picking it up.

2. Polluting the lake, if your neighborhood has one.

3. Outside people come and dump their waste to your neighborhood.

Hope this helps!

7 0

3 years ago

A signal is sampled at 10000 Hz and a total of 1024 data samples are taken, what are the highest and lowest frequencies that can

tia_tia [17]

Since the discrete Fourier series, the Sampling rate, would be the equivalent of the inverse of the passage of time, that is, to the frequency, mathematically this can be written as,

$\frac{1}{\Delta t} = 10000Hz$

In turn, the time can be described depending on the period and the amount of data samples taken. This would be,

$\Delta t = \frac{T}{m}$

Here,

m = Data Samples

T = Period

Replacing,

$\Delta t = \frac{T}{1024}$

Replacing the value of the time from the first equation,

$\frac{1024}{T} = 10000$

$T = 102.4ms$

At the same time, the range then will be given between the basic frequency to the half of the sample, that is,

$f_{min} = \frac{1}{T} = 9.165Hz$

$f_{max} = \frac{1024}{2} (9.165Hz)$

$f_{max} = 5000Hz$

Therefore the lowest frequency is 5000Hz and highest 9.165Hz

7 0

4 years ago

n order to expand agriculture and urban areas to meet increased demand for growing populations, water supplies often have to be

Paha777 [63]

Answer:

Drip irrigation can reduce water use by 30 to 70 percent compared to conventional sprinkler irrigation. Sprinklers can waste water due to scattered spray from winds, evaporation, run-off or deep leaching. Healthier plants.

Explanation:

7 0

3 years ago