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Ksju [112]
3 years ago
5

Timed! I would really appreciate some help! thank you!

Physics
1 answer:
GenaCL600 [577]3 years ago
4 0

Answer:

x = 5[km]

Explanation:

We must convert the time from minutes to hours.

t=30[min]*\frac{1h}{60min}= 0.5[h]\\

We know that speed is defined as the relationship between space and time.

v=x/t

where:

x = space [m]

t = time = 0.5 [h]

v = velocity [m/s]

Now replacing:

x = 10[\frac{km}{h} ]*0.5[h]\\x=5[km]

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The study of the human perception of sound is called psychoacoustics.

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Which refers to the measure of the amount of water vapor in yhe air?<br>​
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The amount of water vapor in the air is called absolute humidity. The amount of water vapor in the air as compared with the amount of water that the air could hold is called relative humidity. This amount of space in air that can hold water changes depending on the temperature and pressure.

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A straight wire is aligned east-west in a region where Earth’s magnetic field has magnitude 0.0780 mT and direction 67.1° below
Sergio [31]

Explanation:

It is given that,

Earth's magnetic field, B=0.078\ mT=0.078\times 10^{-3}\ T

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(a) The given scenario is shown in the attached figure as :

Using the right hand rule to find the direction of magnetic force on the wire. By using this rule, we get the magnetic force acting on the wire is in upward direction.

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I=\dfrac{F}{LB}

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7 0
3 years ago
An electric heater is rated at 1400 W, a toaster is rated at 1150 W, and an electric grill is rated at 1560 W. The three applian
gayaneshka [121]

Answer:

The current in the heater is 12.5 A

Explanation:

It is given that,

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I_1=\dfrac{P_1}{V}

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8 0
4 years ago
How do you calculate the volume and density of something that weighs 20 grams?
Nostrana [21]
Mass divided by volume is density, while mass times density is volume. you cannot calculate density without volume and you cannot calculate volume without density.
i believe that's the answer.
oh gosh i didn't realize my middle school education involved high school stuff.
6 0
4 years ago
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