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beks73 [17]
3 years ago
10

Sian wants to measure the number of seconds that it takes for the contents of a beaker to change from clear to purple. Which of

these tools should she use for this purpose? 1 an electronic balance 2 a stopwatch 3 a barometer 4 a graduated cylinder
Physics
2 answers:
Lorico [155]3 years ago
8 0
If you want to measure the time of an lab just you a stopwatch 2 is your answer
sveta [45]3 years ago
8 0

Answer : The correct option is, (2) a stopwatch

Explanation :

Electronic balance : It is used to measure the amount of substance.

Stopwatch : It is used to measure the time.

Barometer : It is used to measure the pressure.

Graduated cylinder : It is used to measure the volume.

If sian wants to measure the number of seconds that it takes for the contents of a beaker to change from clear to purple then the tool she use for this purpose is, a stopwatch.

Hence, the correct option is, (2) a stopwatch

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When a person speaks, a sound intensity is generated that is 600 times greater than when the person whispers. What is the differ
Charra [1.4K]

Answer:

Originally :  Level = log I / I0

Currently: Level = 10 log I / I0

Level = 10 log 600 = 10 * 2.78 = 27.8

Note the term 1 bel = 10 decibels

5 0
3 years ago
2. A Formula One race car speeds up from rest to 27.8 m/s in a distance of 25 meters.
Nadya [2.5K]

Answer:

Correct answer:   a = 15.46 m/s²

Explanation:

The formula for accelerated movement with the given data is:

V² - V₀² = 2 · a · d     where the initial velocity  V₀ and the final V  

Since the initial velocity V₀ is zero, the formula is:

V² = 2 · a · d  => a = V² / (2 · d) = 27.8² / (2 · 25) = 772.84 / 50 = 15.46 m/s²

a = 15.46 m/s²

God is with you!!!

4 0
3 years ago
Cuando es cuadrangular o home run en el beisbol
Svet_ta [14]

Answer:

when it's home run or home run in baseball

Explanation:

i looked it up on google translate

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3 years ago
how does the presence of carbon dioxide in venus’ atmosphere cause the average surface temp on venus to be higher than the avera
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3 years ago
In how many places did the object stop moving? How do you know?
scZoUnD [109]

Explanation:

The object stops moving in 5 places (namely B, D, F, H, and position after 28 seconds which isn't marked ).

We know that the object has stopped moving, since its position does not change with the passage of time i.e. at rest.

6 0
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