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3 years ago

Mitchell records the amount of time a toy car takes to travel down a ramp one time for each of four slope angles. His lab

Physics

1 answer:

Alexandra [31]3 years ago

4 0

He should run the same set of trials more times in order to improve the precision of the result

Explanation:

When doing a scientific experiment, the results of the measurement are subjected to errors. There are various types of errors:

- Statistical errors: these are due to the limited precision of the instruments used for the measurement. For example, when measuring a lenght with a ruler, the ruler cannot measure with a precision of less than 1 mm, so we always have at least an uncertainty of 1 mm on the measurement done

- Systematic errors: these are errors due to faulty equipment of flaws in the design of the experiment.

In order to reduce the statistical error, it is important to repeat the same measurement more than once: in this way, we can calculate an average for the quantity we are measuring, and the uncertainty on the measure will be reduced.

In this problem, therefore, the amount of time taken by the toy car to travel down the ramp must be measured more times, and then Mitchell should calculate an average for each set of trials, in order to improve the precision of the results.

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a scale model of the solar system where 50 cm represents 1.0x10 to the fifth km is actual distance what would be the dimension o

Fofino [41]

The distance between Mars and the Sun in the scale model would be 1140 m

Explanation:

In this scale model, we have:

$x_1 = 50 cm$ represents an actual distance of

$d_1 = 1.0\cdot 10^5 km$

The actual distance between Mars and the Sun is 228 million km, therefore

$d_2=228\cdot 10^6 km$

On the scale model, this would corresponds to a distance of $x_2$ .

Therefore, we can write the following proportion:

$\frac{x_1}{d_1}=\frac{x_2}{d_2}$

And solving for $x_2$ , we find:

$x_2=\frac{x_1 d_2}{d_1}=\frac{(50)(228\cdot 10^6)}{1\cdot 10^5}=1.14\cdot 10^5 cm = 1140 m$

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3 years ago

We know that every object exerts an attraction on every other object and the heavier the object ___ the attraction.

hichkok12 [17]

I don't know what the exact word is, but I do know that the bigger an objects mass is the more it will attract other objects toward it, mainly smaller objects with less mass. it might be gravity or something around those lines....is it a multiple choice question?

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Which planet has a storm called the Great Dark Spot swirling in its atmosphere?

Viktor [21]

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If the fundamental frequency of a musical instrument is 42Hz, what is the frequency of the second harmonic?

timurjin [86]

For the majority of instruments f = n f0 where f is the resonating frequency, n is any whole number and f0 is the fundamental.
This applies to trumpets, violins, flutes and a broad range. 
In such a case the first harmonic would be at n=1 and the second harmonic would be at n=2 

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3 years ago

The pressure in Arabian sea is much bigger than near the surface? please don't scam

sashaice [31]

Answer:

In general, the annual sea surface temperatures(SSTs) in the Bay of Bengal(BOB) are higher than the Arabian sea(AS). because, there are two main reasons for higher SST in the Bay of Bengal than the Arabian Sea. they are 1. stratification, 2.strong mixing

stratification is nothing but a phenomenon which stratifies(layers) the sea water when different density water(fresh water, rain water) add into the sea water. So the stratification in the bay of Bengal is comparatively high than the Arabian sea due to the high river discharge and precipitation in the BOB than the AS. the mixing process over the Arabian sea is higher than the Bay of Bengal due to the prevailing of strong winds over the AS (because of the presence of the mountains of east Africa) than Bay of Bengal (because of the winds over the BOB are sluggish in nature then the AS). But generally winds over the sea mixes easily the normal sea water than stratified/stabilized sea water column. That's why less mixing will takes place over the surface of BOB than the AS. So due to the presence of less mixing over the surface of the Bay of Bengal than the Arabian sea, the SST values over the Arabian sea are always lower than the Bay of Bengal. that's why the Arabian sea is colder than the Bay of Bengal.

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