2 years ago

Apply the concept of density to explain why oil floats on water.

Physics

1 answer:

Sauron [17]2 years ago

6 0

Anything less dense than water will float, like oil. Anything more dense than water will sink, like rock.

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How much work is required to turn an electric dipole 180° in a uniform electric field of magnitude E = 46.0 N/C if the dipole mo

chubhunter [2.5K]

Answer:

$W=1.22*10^{-23}J$

Explanation:

Torque and energy of an electric dipole in an electric field we find:

$W=U(\alpha_{o}+\pi )-U(\alpha_{o} )=-pE(cos(\alpha_{o}+\pi )-cos(\alpha_{o} ))\\W=2pECos\alpha_{o}\\ W=2(3.02*10^{-25}C.m )(46.oN/C)Cos64\\W=1.22*10^{-23}J$

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3 years ago

What causes weather to firm into droplets.

Tomtit [17]

Answer:

Density

Explanation:

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2 years ago

A horizontal force of 200N is applied to a 55kg cart across a 10m level surface. If the cart accelerates at 2.0m/s^2, then what

luda_lava [24]

1j=1newton*meter
force=mass*accel
200N=55x
200/55=3.636......
3.636...-2=1.636.....
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90newtons*distance of 10 meters= 900 j of work done by friction

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2 years ago

Read 2 more answers

Calculate the power provided by a 12-volt car battery with a rating of 350 amperes.

UNO [17]

The power provided by the car battery is 4200W or 4.2kW

<u>Explanation:</u>

Given:

Voltage, V = 12V

Current, I = 350A

Power, P = ?

According to Ohm's law:

Power = voltage X current

On substituting the value we get:

P = 12 X 350

P = 4200W

Therefore, the power provided by the car battery is 4200W or 4.2kW

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2 years ago

If the swing rotates clockwise (looking from above the table), which direction is the angular velocity of the hanging mass point

AnnZ [28]

Answer:

down

Explanation:

if you move to the right there is mass pushing there is a weight pushing down the force in which it makes it larger

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2 years ago