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andreyandreev [35.5K]
3 years ago
8

Terminal velocity in a sentence

Physics
1 answer:
elixir [45]3 years ago
8 0
The ball dropped from the skyscraper reached terminal velocity and could not get any faster.
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Many types of decorative lights are connected in parallel. If a set of lights is connected to a 110 V source and the filament of
Oksi-84 [34.3K]

Answer:

i₀ = V / R_i

Explanation:

For this exercise we use Ohm's law

         V = i R

          i = V / R

the equivalent resistance for

         \frac{1}{R_{eq}} =  ∑ \frac{1}{R_i}

if all the bulbs have the same resistance, there are N bulbs

         \frac{1}{ R_{eq}} = \frac{N}{R_i}

         R_{eq} = R_i / N

we substitute

         i = N V / Ri

where i is the total current that passes through the parallel, the current in a branch is

         i₀ = i / N

         i₀ = V / R_i

3 0
3 years ago
To increase the speed at which Google Analytics compiles reports, what action could be taken?
Yuri [45]

Answer:

Answer Choose “Faster response” in the sampling pull-down menu

Explanation:

At the top of the report, below the date range selector, select faster response,

This option uses a smaller sampling size to give you faster results. In order to get a better understanding lets define sampling, according to Google analytics website  

In data analysis, sampling is the practice of analyzing a subset of all data in order to uncover the meaningful information in the larger data set.  

For example, if you wanted to estimate the number of trees in a 100-acre area where the distribution of trees was fairly uniform, you could count the number of trees in 1 acre and multiply by 100, or count the trees in a half acre and multiply by 200 to get an accurate representation of the entire 100 acres.

5 0
4 years ago
Block A, with a mass of 4.0 kg, is moving with a speed of 3.0 m/s while block B, with a mass of 6.0 kg, is moving in the opposit
ElenaW [278]

Answer:

The momentum of the two-block system is 18 kg-m/s

Explanation:

It is given that,

Mass of block A, m_A=4\ kg  

Mass of block B, m_B=6\ kg  

Velocity of block A, v_A=3\ m/s  

Velocity of block B, v_B=-5\ m/s (it is moving in opposite direction)

We need to find the momentum of two block system. It is given by the product of mass and velocity for both blocks i.e.

p=m_Av_A+m_Bv_B

p=4\ kg\times 3\ m/s+6\ kg\times (-5\ m/s)

p = -18 kg-m/s

So, the momentum of two block system is 18 kg-m/s. Hence, this is the required solution.                                            

5 0
4 years ago
In 1926, American physicist Albert Michelson used _____ to measure the speed of light.
svetoff [14.1K]
Albert Michelson had many attempts to measure the speed of light during his career, yet his self-acclaimed definitive measurements were achieved using an 8-sided mirror that rotated around an axis at the speed of 528 revolutions per second. He used a large distance between these reflecting mirrors on a mountain-site, and they were approximately 35.5 km apart. In order to determine what the speed of light was, he would calculate in meters per second how long it would take the light to reach the one reflector and travel back compared to the time it took for one of the eight mirrors to complete a 360 degree rotation.
8 0
3 years ago
Read 2 more answers
When wind applies a force to a pinwheel, the arms of the pinwheel start to move in a circular motion.
Ilya [14]

Answer:

The reaction force from the shaft, which keeps the wheels in place during operational rotation

Explanation:

The pinwheel design which has the same principle of a turbine, relies on a external energy source such as the wind or water to provide motive force for spinning

Whereby the reaction force provided by the shaft holding the wheel is non existent or insufficient, the wind will be able to push the wheel in its direction thereby giving the wheel only a net translation and no rotation.

8 0
4 years ago
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