Q: How would you calculate the air velocity to move a drop of liquid into the air stream?

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Distance alone is not enough to tell you velocity final. (If it could, then all of the thousands of runners who finish in the same marathon would all cross the finish line at the same speed.) Besides distance, you would also need velocity initial, and either acceleration or time.

Generally wind speed is measured using a cup anemometer (wind speed measuring device). The velocity of a flatulation will decrease as it leaves the anus, so to properly measure the velocity the measurement would have to be done before the exit. Theoretically you could measure the velocity of the gases by placing a miniature cup anemometer with walls inside the rectal tract close to the anus to give an approximate wind speed (velocity) of the gases.

That sounds too difficult. Instead, if the item can handle being submerged in liquid, you could just measure how much liquid it displaces when submerged.

The overall velocity would increase. The ball would then have a curved path with some velocity vector in the North South direction and some vector in the East West Direction

I would place it in a container full of liquid after measuring the liquid. I would measure the amount of liquid displaced by the object. That amount is equal to the volume of the irregular object if it is fully submerged in the liquid.

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The velocity of a pebble is typically much slower than the velocity of a stream. Streams can flow at varying speeds depending on factors such as gradient and volume of water, whereas a pebble would most likely only move when influenced by the force of the stream's flow.

The stream velocity required to carry the smallest boulders is typically around 1 meter per second. This velocity is based on the sediment transport capacity of the stream, which is influenced by factors such as the size and weight of the boulders, as well as the stream's gradient and flow rate.

That depends: based on what information? One calculation you might do is to add the original velocity with the velocity change (vector addition). However, normally you would proceed the other way: you would have to MEASURE the original velocity and the final velocity, and THEN calculate the difference in velocity.f

No, water changing from liquid to vapor or gas would not be called a stream. A stream typically refers to a continuous flow of water running in a channel.

The momentum of the passenger bus would depend on its mass and velocity. To calculate it, multiply the mass of the bus by its velocity. If the velocity is troubled, the momentum would change accordingly, decreasing or increasing depending on the direction and magnitude of the velocity change.

To find the average velocity pressure, you would need to calculate the total velocity pressure and divide it by the number of measurements taken. This would give you the average velocity pressure over the measurement period.

A stream with a velocity of 20 cm/s can transport particles up to fine sand size (0.0625 - 2 mm). Larger particles such as gravel and boulders would require a faster flow velocity to be transported.

The minimum stream velocity needed to keep a particle in motion can be estimated using the settling velocity equation. For a 10 cm diameter particle, the approximate minimum stream velocity would need to be around 0.03 m/s to keep it in motion. This value may vary depending on factors such as particle density and fluid properties.

To calculate the velocity of an object, you would typically need two measurements: the distance traveled and the time taken to travel that distance. By dividing the distance traveled by the time taken, you can determine the object's velocity.

The average velocity would be the total displacement over the total time interval. To calculate this, divide the total displacement by the total time to get the average velocity.

If a liquid is thick, the terminal velocity of an object dropped into it is typically smaller because the thicker liquid offers more resistance to the object's motion, slowing it down more quickly than a thinner liquid would.

To calculate the mass of the hydrometer, you need the volume of the liquid displaced by the hydrometer. Since the density of the liquid is 0.80 g/cm³ and the depth is 7.5 cm, the volume of the liquid displaced would be 7.5 cm³. You can then calculate the mass by multiplying the volume of liquid displaced by the density of the liquid.