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Harlamova29_29 [7]
3 years ago
7

A floating boat has a weight of 100 N. What is the buoyant force on the boat?

Physics
1 answer:
lara31 [8.8K]3 years ago
4 0
If the boat is floating, then it's just sitting there, and not accelerating
up or down.  That means the vertical forces on it must be balanced. 

So if its weight (acting downward) is 100 newtons, then the buoyant
force on it (acting upward) must also be 100 newtons.
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F has direct relation with a
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3 years ago
A 50-ω resistor is connected to a 9.0 V battery. How much thermal energy is produced in 7.5 minutes?1.2 * 10^2 J1.3 * 10^3 J3.0
emmasim [6.3K]

In order to calculate the thermal energy, first let's calculate the power, using the formula:

P=\frac{V^2}{R}

For a voltage V = 9 Volts and a resistance R = 50 ohms, we have:

\begin{gathered} P=\frac{9^2}{50} \\ P=\frac{81}{50}=1.62\text{ W} \end{gathered}

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\begin{gathered} E=P\cdot t \\ E=1.62\cdot7.5\cdot60 \\ E=729\text{ J} \end{gathered}

In scientific notation, we have an energy of 7.3 * 10^2 J, therefore the correct option is the fourth one.

4 0
1 year ago
Guys please help me out I’ll give extra points
zvonat [6]

Answer: h = 3.34 m

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PE = mgh

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8 0
3 years ago
A bike travels 30m/s for 3 seconds. How far did it travel?
Elena L [17]
He traveled 90 meters
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How are frequency and wave period related?
dedylja [7]
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Do you see where this is going ?

'Frequency' and 'period' are reciprocals of each other.

For any wave ...

Period  =  (1) / (frequency) .

Frequency  =  (1) / (period) .
6 0
3 years ago
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