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3 years ago

When analyzing a position time graph the direction of the slope positive or negative tells us:

Physics

2 answers:

Sphinxa [80]3 years ago

8 0

Answer:

Explanation:

Positive values for position indicate that the object is in front of the starting point and negative values tell us that the object is behind the starting point. (time = 9.5, position = 0) the object is at the starting point.

erma4kov [3.2K]3 years ago

5 0

Answer:

Explanation:

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The current supplied by a battery as a function of time is ) -(0.64 A)e-/(6.0 hr). What is the total number of electrons transpo

Paha777 [63]

Answer:

The total number of electrons is $8.6\times10^{22}$

(3) is correct option.

Explanation:

Given that,

The current equation is

$I=0.64 e^{\dfrac{-t}{6.0 hr}}$

We know that,

The formula of charge

$q=\int_{0}^{\infty}{I dt}$

$q=\int_{0}^{\infty}{0.64 e^{\dfrac{-t}{6.0 hr}}dt$

$q=0.64\int_{0}^{\infty}{e^{\dfrac{-t}{6.0 hr}}dt$

$q=0.64\int_{0}^{\infty}{e^{\dfrac{-t}{21600}}dt$

$q=0.64(21600e^{\dfrac{-t}{21600}})_{0}^{\infty}$

$q=0.64(0-21600)$

$q=0.64\times21600$

$q=13824\ C$

We need to calculate the number of electron

Using formula of charge

$q=ne$

$n=\dfrac{q}{e}$

$n=\dfrac{13824}{1.6\times10^{-19}}$

$n=8.6\times10^{22}$

Hence, The total number of electrons is $8.6\times10^{22}$

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3 years ago

In every trench over 4 feet (1.2 m) deep, there must be an exit every

ss7ja [257]

Explanation:

25 ft I believe that this is the best answer

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2 years ago

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Alla [95]

Answer:

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Explanation:

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Read 2 more answers

Knowing that a 0.90-kg object weighs 9.0 N , find the acceleration of a 0.90-kg stone in free fall . Express your answer to two

sasho [114]

Answer:

The value of acceleration of a stone in free fall is $10\ m/s^2$ .

Explanation:

Given that,

Mass of the object, m = 0.9 kg

Weight of the object, W = 9 N

We need to find the acceleration of a stone in free fall. The weight of an object is given by :

W = mg

g is the acceleration of the stone in free fall

So, $g=\dfrac{W}{m}$

$g=\dfrac{9\ N}{0.9\ kg}$

$g=10\ m/s^2$

So, the value of acceleration of a stone in free fall is $10\ m/s^2$ . Hence, this is the required solution.

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3 years ago

An ideal gas in a cubical box having sides of length L exerts a pressure p on the walls of the box. If all of this gas is put in

Soloha48 [4]

Answer:

Explanation:

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3 years ago