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4 years ago

If you run your boat aground what should you do first

1 answer:

8 0

If you run your boat aground, the first thing you should do is to calmly assess the situation. In case you have passengers on your boat, you should have them don PFDs (personal flotation devices). Afterwards, you should turn off the engine, check if there is any damage, and generally see if everything is okay.

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A force of 50N is applied to the end of a lever to lift a rock that is 350N . what is the mechanical advantage of a lever?

Ostrovityanka [42]

Answer:

MA = 7

Explanation:

Mechanical Advantage = Load/Effort

From the question,

Load = 350N

Effort applied = 50N

Mechanical Advantage = 350N/50N

Mechanical Advantage = 7

Hence the mechanical advantage is 7

5 0

3 years ago

How do you know which magnitude is higher or how do you compare them?

Paul [167]

Magnitudes are measured by intensity so a 3.4 earthquake is much less stronger than a 4.5 earthquake it’s very literally when measuring them the higher the number the stronger it is

7 0

3 years ago

A 60 w (120 v) night light is turned on for an average 12 h a day year round. part a what is the annual cost of electricity at a

Zinaida [17]

The annual cost of electricity is $28.908 .

work done is equal to energy consumed

therefore total energy is calculated as power times the duration of operation .

$W=P.t$

where W= work done

P=power

t= time of operation

therefore,

total work done (W)=0.06×12×365 kw

=262.8 kw

so total annual electricity bill = 262.8×0.11

=$28.908

Learn more about electricity bill consumption here:

brainly.com/question/21116164

#SPJ4

4 0

1 year ago

4-12. The morning inspection of the tank farm finds a leak in the turpentine tank. The leak is repaired. An investigation finds

bonufazy [111]

Answer:

a) $V=759.8727\ ft^3$

b) $\dot V=1.403\times 10^{-3}\ ft^3.s^{-1}$

c) $t\approx29.541\ s$

Explanation:

Given:

diameter of hole in the tank, $d'=0.1\ in=\frac{1}{120}\ ft$

position of the hole form the tank bottom, $h' =7\ ft$

initial level of turpentine in the tank before the leakage, $h_i=17.3\ ft$

level of turpentine in the tank after the repair of leakage, $h_f=13\ ft$

diameter of the tank, $d=15\ ft$

density of turpentine oil, $\rho=55\ lbm.ft^3$

Now, volume of turpentine spilled:

$V=A.(h_i-h_f)$

where:

$A=$ area of the cross section of the tank's volume

$V=\pi .\frac{d^2}{4} \times(h_i-h_f)$

$V=\pi\times\frac{15^2}{4} \times(17.3-13)$

$V=759.8727\ ft^3$

When the tank was full the liquid level was highest:

so velocity form the height of the hole will be given as:

$v=\sqrt{2g.(h_i-h')}$

$v=\sqrt{2\times 32.12\times (17.3-7) }$

$v=25.722\ ft.s^{-1}$

<u>Now we have the flow rate of the spillage given by:</u>

$\dot V=(\pi.\frac{d'^2}{4}) \times v$

$\dot V=\pi\times \frac{(\frac{1}{120})^2 }{4} \times 25.722$

$\dot V=1.403\times 10^{-3}\ ft^3.s^{-1}$

Total time the leak was active can be calculated as:

$t=\frac{V}{\dot V}$

$t=\frac{759.8727}{25.722}$

$t\approx29.541\ s$

7 0

4 years ago

What does a hurricane hunter do

Scrat [10]

<span>A hurricane hunter is an audacious job. They fly straight into hurricanes to gather scientific data and make observations. They are able to do this since the eye of an hurricane is calm, and they can make observations from there.</span>

3 0

3 years ago