3 years ago

The moon has a weaker gravitational force than earth. sofia weighs 50 lbs. on earth. how much will she weigh on the moon?

1 answer:

3 0

If Sofia weighs 50 lbs on Earth, then she would weigh 8.3 lbs, because you are 6 times lighter on the moon than you are on Earth!

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a radio antenna broadcasts a 1.0 MHz radio wav e with 21 kW of power. Assume that the radiation is emitted uniformly in all dire

My name is Ann [436]

Answer:

$I=2.67\times 10^{-6}\ W/m$

Explanation:

Given that,

Frequency of a radio antenna is 1 MHz

Power, P = 21 kW

We need to find the the waves intensity 25 km from the antenna . The object emits intenisty evenly in all direction. It can be given by :

$I=\dfrac{P}{4\pi r^2}\\\\I=\dfrac{21\times 10^3}{4\pi (25000)^2}\\\\I=2.67\times 10^{-6}\ W/m$

So, the wave intensity 25 km from the antenna is $2.67\times 10^{-6}\ W/m$ .

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3 years ago

What is the equivalent resistance of a circuit that contains three 10.0 resistors connected in series to a 6.0 V battery

disa [49]

The equivalent resistance of n resistors in series is given by:
$R_{eq} = R_1 + R_2 + ... + R_n$
In our circuit, we have three resistors of $10.0 \Omega$ each, therefore the equivalent resistance of the circuit is
$R_{eq} = R_1 + R_2 + R_3 = 10.0 \Omega + 10.0 \Omega + 10.0 \Omega =30.0 \Omega$

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3 years ago

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an airplane traveling 245 m/s east expericences turbulence, so the pilot slows down to 230 m/s. it takes the pilot 7 seconds to

lana66690 [7]

Answer:

a=v-u/t

a=245-230/7

a=2

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3 years ago

Which has more momentum, a speeding baseball or an ocean liner at rest in a harbor?

uranmaximum [27]

Momentum is (mass) times (speed), so nothing that is at rest has any momentum. If the battleship is at rest, then a mosquito in flight, a leaf falling from a tree, and your speedy baseball each have more momentum than the ship has.

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3 years ago

A one bucket is fill up with sand and another is empty .Which bucket can oscilliate more when release from the distance

Sav [38]

Answer:

a one bucket with full of sand because of it's mass which plays role in momentum

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3 years ago