3 years ago

If a melon has a a mass of 1 kg, how much does the melon weigh?

Physics

1 answer:

Pavel [41]3 years ago

6 0

12 N yadtagaghajsygshshshzgshshshbomabsstanbtsforclearskinahhshdlmaksstabtxtimalloserloverkshdhsjahahhaha

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If 12V battery maintains a 4.5A current through a resistor what is the resistance of the resistor?

Dimas [21]

Answer:

2.7ohms

Explanation:

Given parameters:

Voltage of the battery = 12V

Current = 4.5A

Unknown:

Resistance of the resistor = ?

Solution:

From Ohm's law, we know that;

V = IR

V is the voltage

I is the current

R is the resistance

So;

R = $\frac{V}{I}$ = $\frac{12}{4.5}$ = 2.7ohms

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tia_tia [17]

Let the rescue boat starts at an angle theta with the North

now its velocity towards East is given as

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so we will have

$t = \frac{0.5}{24sin\theta}$

also we have

$t = \frac{2}{-24cos\theta + 3}$

now we have

$\frac{2}{-24cos\theta + 3} = \frac{0.5}{24sin\theta}$

$4*24sin\theta = - 24cos\theta + 3$

$96 sin\theta + 24cos\theta = 3$

by solving above we got

$\theta = 164 degree$

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The ball should take twice as long to return to its original position as it took to reach its maximum height, so it should return to its original position at $t=2.8\,\rm s$ .

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lyudmila [28]

Answer:

product

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