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Schach [20]
3 years ago
13

Which of these activities might involve a chemist? Question options: measuring the motions of a planet determining the fat conte

nt in a candy bar determining the air resistance on a moving car determining an organism's role in an ecosystem?
Physics
2 answers:
marissa [1.9K]3 years ago
8 0

Answer;

Determining the fat content in a candy bar

Explanation;

-All chemists work indoors in laboratories and other controlled environments conducive to compromised research. They work with various types of scientific equipment, such as spectrometers and chromatographs, which allow the scientists to examine and evaluate chemicals and their compounds at a microscopic level.

-Most chemists operate in two worlds of work. One is the macroscopic world that you see, feel, and touch. Chemists also operate in the microscopic world that you can’t directly see, feel, or touch.

vova2212 [387]3 years ago
8 0

Answer:

determining the fat content in a candy bar is the correct answer,

took the topic.

Explanation:

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Which statement describes why scientific notation is useful? It makes very small numbers into whole numbers. It converts fractio
disa [49]

It makes calculations with very large and small numbers easier.

Scientific notation is a system used in order to It makes calculations with very large and small numbers easier. It is useful as it allows very large number that would take a lot of space to write otherwise, and it allows them to be calculated easier. 10^{23} for example is a incredible large number, but written in this form is immediately understandable and useful for calculation.

3 0
4 years ago
Read 2 more answers
How to convert acceleration to velocity.
Nana76 [90]

You can't. Velocity and acceleration measure two different things, so their units are incompatible. It's like asking, "How many meters does this book weigh?"

Maybe you mean "find" acceleration using given velocities, or a velocity function?

4 0
3 years ago
An alpha particle (α), which is the same as a helium-4 nucleus, is momentarily at rest in a region of space occupied by an elect
beks73 [17]

Answer:

Speed of the alpha particle is v=1.8180\times 10^3m/sec      

Explanation:

We have given charge on alpha particle q=3.2\times 10^{-19}C

Mass of the alpha particle m=6.68\times 10^{-27}kg

Potential difference V=-3.45\times 10^{-3}volt

We have to find the speed of the alpha particle

From energy conservation we know that

\frac{1}{2}mv^2=qV

\frac{1}{2}\times 6.68\times 10^{-27}\times v^2=3.2\times 10^{-19}\times 3.45\times 10^{-3}

v=1.8180\times 10^3m/sec

4 0
3 years ago
When vibrational motion in an object increases, which is a true statement?
ss7ja [257]
Hello friend!!

We know that kinetic energy is the energy possessed due to the motion of the object. And we know if the object is in a fast motion then the temperature would be high, whereas if the object is slow in motion then it will have lower temperature. So we know that the kinetic energy is indirectly related to temperature.From our knowledge we can conclude that HIGHER THE TEMPERATURE, HIGHER THE KINETIC ENERGY and LOWER THE TEMPERATURE, LOWER THE KINETIC ENERGY.
Hence, the answer to your question here is,a.kinetic energy, temperature, and thermal energy increase. 
Hope it helps!!All the best!!
5 0
3 years ago
A liquid of density 1288 kg/m3 flows with speed 2.88m/s into a pipe of diameter 0.24 m. The diameter of the pipe decreases to 0.
Tju [1.3M]

Answer:

66.35m/s

Explanation:

Para resolver el ejercicio es necesario la aplicación de las ecuaciones de continuidad, que expresan que

A_1V_1 =A_2 V_2

From our given data we can lower than:

R_i = \frac{0.24}{2} = 0.12m

R_f = \frac{0.05}{2} = 0.025m

So using the continuity equation we have

A_1V_1 =A_2 V_2

V_2 = \frac{A_1V_1}{A_2}

V_2 = \frac{(\pi(0.12^2))(2.88)}{(\pi (0.25)^2)}

V_2 = 66.35m/s

Therefore the velocity at the exit end is  66.35m/s

8 0
3 years ago
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