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3 years ago

A 100 kg boat is floating in water. half of the boat is submerged under water. what is the weight of the boat?

Physics

1 answer:

Alex17521 [72]3 years ago

7 0

W=MG
w is weight
m is mass
g is gravity
W=(100 kg)(9.8 m/s)
W= 980 N
hope this helps

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A liquid of density 1200kg/m³ is filled in a beaker upto the depth of 50 cm. calculate the pressure at bottom of the breaker.(g=

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Density=1200kg/m^3=p
Height=50cm=0.5m=h
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$\boxed{\sf Pressure=pgh}$

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$\\ \qquad\quad\sf{:}\dashrightarrow Pressure=600(9.8)$

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2 years ago

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3 years ago

If the mass of the object is doubled and the speed is halved then kinetic energy will change by a factor of:

madam [21]

Answer:

kinetic energy will change by a factor of 1/2

Option C) 1/2 is the correct answer

Explanation:

Given the data in the question;

we know that;

Kinetic energy = 1/2.mv²

given that mass of the object is doubled; m1 = 2m

speed is halved; v1 = V/2

Now, New kinetic energy will be; 1/2.m1v1²

we substitute

Kinetic Energy = 1/2 × 2m × (v/2)²

Kinetic Energy = 1/2 × 2m × (v²/4)

Kinetic Energy = 1/2 × m × (v²/2)

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Kinetic Energy = 1/2 [ KE ]

Therefore; kinetic energy will change by a factor of 1/2

Option C) 1/2 is the correct answer

3 0

2 years ago

Consider an ideal gas at 27.0 degrees Celsius and 1.00 atmosphere pressure. Imagine the molecules to be uniformly spaced, with e

antiseptic1488 [7]

Answer:

The length of an edge of each small cube is 3.43 nm.

Explanation:

Given that,

Temperature of ideal gas =27.0°C

Pressure = 1.00 atm

We need to calculate the length of an edge of each small cube

Using gas equation

$PV=nRT$

$PV=NkT$

$V=\dfrac{NkT}{P}$

For, N = 1

Where,

N = number of molecule

k = Boltzmann constant

T = temperature

P= pressure

Put the value into the formula

$V=\dfrac{1\times1.38\times10^{-23}\times(27+273)}{1.03\times10^{5}}$

$V=4.019\times10^{-26}\ m^3$

Now, for the cube

$V=L^3$

$L=V^{\frac{1}{3}}$

$L=(4.019\times10^{-26})^{\frac{1}{3}}$

$L=3.43\times10^{-9}\ m$

$L=3.43 nm$

Hence, The length of an edge of each small cube is 3.43 nm.

3 0

3 years ago