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3 years ago

You can speed up a chemical reaction by using a recyclable substance called areactant

2 answers:

8 0

The recyclable substance that speeds up chemical reactions is normally called catalyst or when it comes to reactions in living systems- an enzyme.

Vilka [71]3 years ago

5 0

The answer is True. You can speed up chemical reactions by using a recyclable substance called a reactant.

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8. What is not changed when work is done by a machine?

Ulleksa [173]

Any work a machine does is commanded by a human (in code or any input) or else they are sentient, so humans are still required.

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3 years ago

Electromagnetic radiation that behaves like a particle is called a(n) ________.

Luda [366]

It is called photons

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3 years ago

A distance of 200 ft must be taped in a manner to ensure a standard deviation smaller than ± 0.04 ft. What must be the standard

Nutka1998 [239]

Answer:

The error in tapping is ±0.02828 ft.

Explanation:

Given that,

Distance = 200 ft

Standard deviation = ±0.04 ft

Length = 100 ft

We need to calculate the number of observation

Using formula of number of observation

$n=\dfrac{\text{total distance}}{\text{deviation per tape length}}$

Put the value into the formula

$n=\dfrac{200}{100}$

$n=2$

We need to calculate the error in tapping

Using formula of error

$E_{series}=\pm E\sqrt{n}$

$E=\dfrac{E_{series}}{\sqrt{n}}$

Put the value into the formula

$E=\dfrac{0.04}{\sqrt{2}}$

$E=\pm 0.02828\ ft$

Hence, The error in tapping is ±0.02828 ft.

3 0

4 years ago

Please help me with question 1 of this reflections and refraction of waves worksheet, I’m really confused as to this labelling!

max2010maxim [7]

Here ya go. Check it out.

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3 years ago

1) Compute the travel time ratio of the other objects to the hollow cylinder. 2) Discuss how the travel time ratio of solid cyli

Illusion [34]

Answer:

(1) Use the data in Table R2 and error propagation rule to compute the travel time ratio (with errors) of the other objects to the hollow cylinder ? ℎ? . Fill in Table R5 below. [6] Table R5 Solid cylinder Billiard ball Racquetball ? ? ℎ? ± ± ± (2) Discuss how the ratio of solid cylinder to hollow cylinder have confirmed or contradicted the theoretical ratio in Eq. (8) in Manual . Compute the % error and make discussions. [4] Answer: (3) From the travel time ratio, please determine (i) whether the billiard ball is solid or hollow, and (ii) whether the racquetball is solid or hollow. Write down your reasons. (The answer can be uncertain if your measurements do not show enough information.) [4]

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PHYS2125 Physics Laboratory I ©2018 Kuei Sun The University of Texas at Dallas 5 Answer: (4) Which object in Table R2has the largest SEOM? Please discuss the reason for this relatively largeSEOM and how to improveit. [3] (5) Please discuss TWO possible systematic errors in the measurement. [3] Answer: **Attach your calculation details. Use as many paper sheets as you need. Calculations that demonstrate your understandings may gain you partial credit. **Make sure your work-area and equipment are the same as they were before you leave.

Explanation:

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3 years ago