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4 years ago

What condition is required for cloud formation in the atmosphere?

1 answer:

7 0

Answer: To form a cloud, the air that rises must cool to the point where some of the water vapor molecules "clump together" at a faster pace than they are pulled apart by their thermal energy. These molecules then condense to form the clouds and water droplets.

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A murder victim is found slumped over his desk in his office. The bullet that killed him is found lodged in his chair. Investiga

otez555 [7]

It’s b because I had the question

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3 years ago

1. A baseball is hit straight up at a speed of 45 meters per second.

Sidana [21]

Answer:

a) 103.32 m

b) 9.18 s

Explanation:

a) Let's use the knowledge that at the top of its trajectory, the baseball will have a final velocity of 0 m/s.

The acceleration due to gravity is -9.8 m/s², assuming the upwards direction is positive and the downwards direction is negative.

The initial velocity of the baseball is 45 m/s.

We are trying to find the vertical displacement of the baseball, Δx, and we have the variables v, a, and v₀.

Find the constant acceleration equation that contains all four of these variables:

v² = v₀² + 2aΔx

Substitute the known values into the equation.

(0)² = (45)² + 2(-9.8)Δx
0 = 2025 - 19.6Δx
-2025 = -19.6Δx
Δx = 103.32

The maximum height of the ball before it falls back down is 103.32 m.

b) Now we want to solve for time t. Find a constant acceleration equation that contains three known variables.

v = v₀ + at

Substitute known values into this equation.

0 = 45 + (-9.8)t
-45 = -9.8t
t = 4.59183673

Remember that this is only half of the baseball's flight since we are using the final velocity for when the ball is halfway through its trajectory.

To solve for the total time the baseball is in the air, double the time t we solved for.

2t = 9.18367346

The baseball is in the air for 9.18 s.

7 0

3 years ago

calcular la longitud de un péndulo que oscila a 10 Hz en santa fe de bogota, sabiendo que en esta ciudad la aceleracion de la gr

cricket20 [7]

Answer:

$L=2.48*10^{-3} m$

Explanation:

The period equation for a pendulum is given by:

$T=2\pi \sqrt{\frac{L}{g}}$

and we know that T = 1/f, where f is the frequency, so we will have:

$\frac{1}{f}=2\pi \sqrt{\frac{L}{g}}$

Now, we just need to solve this equation for L.

$\frac{1}{2\pi f}=\sqrt{\frac{L}{g}}$

$L=\frac{g}{(2\pi f)^{2}}$

g is the gravity in Bogota (g=9.78 m/s^{2})
f is 10 Hz
L is the lenght of the pendulum

$L=\frac{9.78}{(2\pi*10)^{2}}$

$L=2.48*10^{-3} m$

I hope it helps you!

5 0

3 years ago

Describe the conditions necessary for sublimation to occur please help

katovenus [111]

Answer:

Sublimation occurs more readily when certain weather conditions are present, such as low relative humidity and dry winds. Sublimation also occurs more at higher altitudes, where the air pressure is less than at lower altitudes. Energy, such as strong sunlight, is also needed.

6 0

3 years ago

Explain the mathematical equation for KVL (The voltage of a circuit through each component in that circuit is proportional to th

deff fn [24]

Explanation:

Kirchhoffs Voltage Rule, or KVL, explains that "the overall voltage throughout the circuit in any closed loop network is equal to the sum of all voltage decreases inside the same loop" which is equivalent to zero. In other words, the mathematical sum of all within the loop voltages must be equal to zero.

6 0

3 years ago