3 years ago

MULTIPLE CHOICE

Physics

2 answers:

Lady bird [3.3K]3 years ago

6 0

Answer:

abcdefghijklmnopqrstuvwxyz

boyakko [2]3 years ago

3 0

Soft skills are personal attributes that enable someone to interact effectively and harmoniously with other people. so therefore A and F

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Rogan claims that he can run 8 miles per hour. Use the speed formula to determine how many minutes it would take him to run one

MAXImum [283]

Answer:

he would have to run at a 7 and a half mile to get 8 miles in an hour

Explanation:

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3 years ago

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A violin string vibrates at 260 Hz when unfingered. At what frequency will it vibrate if it is fingered one fourth of the way do

Advocard [28]

Answer:

346.66 Hz

Explanation:

$l_1$ = Length of string which is unfingered = l

$l_2$ = Length of string which is vibrate when fingered = $l-\dfrac{1}{4}l=\dfrac{3}{4}l$

$f_1$ = Unfingered frequency = 260 Hz

$f_2$ = Fingered frequency

Frequency is inversely proportional to length

$f=\dfrac{1}{l}$

So,

$\dfrac{f_1}{f_2}=\dfrac{l_2}{l_1}\\\Rightarrow \dfrac{f_1}{f_2}=\dfrac{\dfrac{3}{4}l}{l}\\\Rightarrow \dfrac{f_1}{f_2}=\dfrac{3}{4}\\\Rightarrow f_2=\dfrac{4}{3}f_1\\\Rightarrow f_2=\dfrac{4}{3}260\\\Rightarrow f_2=346.66\ Hz$

The frequency of the fingered string is 346.66 Hz

3 0

3 years ago

How far will a man travel in 15 min driving his car down the highway at an average speed of 24 m/?s

emmasim [6.3K]

Answer:

21.6 km

Explanation:

15×60×24 = 21600 m

$\frac{21600}{1000}$ = 21.6 km

7 0

3 years ago

How many moles of nitrogen are needed to completely convert 6.34 mol of hydrogen?

____ [38]

If we use the equation:
N2 + 3H2 --> 2NH3
Then
1 mol of Nitrogen required 3 moles of Hydrogen
x mols : 6.34mols
X = 6.34/3
X = 2.11 moles of Nitrogen are required.

4 0

3 years ago

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Dmitry [639]

Answer: 176.4 J

Explanation:

5 0

2 years ago