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3 years ago

Could a vector ever be shorter than one of its components? Equal in length to one of its components? Explain.

Physics

1 answer:

Kruka [31]3 years ago

7 0

No the vector can never be shorter than one of its components

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Find the odd one out radish,potato, beet,carrot.

romanna [79]

Answer:

Potato is not a root whereas the rest of the four items are forms of root.

Potato is a stem.

So, option B is the odd one out

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3 years ago

The shortest path from a starting point to an endpoint, regardless of the path

liubo4ka [24]

Answer:

answer is C shortest vector

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3 years ago

It is MOST accurate to say the the body mass index (BMI) provides information about ____________. A. Body composition. B. An ind

cluponka [151]

It is most accurate to say that body mass index (BMI) provides information about an individual's height-weight ratio. The correct answer is B.

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3 years ago

Read 2 more answers

Calculate the heat energy released when 13.3 g of liquid mercury at 25.00 C is converted to solid mercury at its melting point.C

dmitriy555 [2]

Answer:

$-270.321012\ J$

Explanation:

$C_v$ = Heat capacity of Hg = 28 J/mol

$\Delta T$ = Change in temperature = $(234.32-(273.15+25))$

$\Delta H_{f}$ = Enthalpy of fusion = 2.29 kJ/mol

The number of moles is given by

$n=13.3\times \dfrac{1}{200.59}\\\Rightarrow n=0.0663\ molHg$

Heat is given by

$Q_1=nC_v\Delta T\\\Rightarrow Q_1=0.0663\times 28\times (234.32-(273.15+25))\\\Rightarrow Q_1=-118.494012\ J$

Heat released is given by

$Q_2=-n\Delta H_{f}\\\Rightarrow Q_2=-0.0663\times 2.29\times 10^3\\\Rightarrow Q_2=-151.827\ J$

Total heat is given by

$Q=Q_1+Q_2\\\Rightarrow Q=-118.494012+(-151.827)\\\Rightarrow Q=-270.321012\ J$

The total heat released is $-270.321012\ J$

4 0

3 years ago

Two wheel gears are connected by a chain. The larger gear has a radius of 8 centimeters and the smaller gear has a radius of 3 c

dezoksy [38]

Answer:

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

Explanation:

As we know that the small gear completes 24 revolutions in 20 seconds

so the angular speed of the smaller gear is given as

$\omega = 2\pi\frac{24}{20}$

$\omega = 2.4\pi rad/s$

Now we know that the tangential speed of the chain is given as

$v = r \omega$

so we have

$v = (3 cm)(2.4\pi)$

$v = 7.2 \pi cm/s$

$v = 432\pi cm/min$

Since both gears are connected by same chain so both have same linear speed and hence correct answer will be

B.The linear velocity of the gears is the same. The linear velocity is 432π centimeters per minute.

8 0

4 years ago