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Elina [12.6K]
2 years ago
14

_______is the resistance to motion offered by an object sliding over a surface

Physics
1 answer:
anyanavicka [17]2 years ago
5 0

friction is the force that resists the sliding or rolling of an object over another.

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Meters ?? or just a variable
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A woman flies 300 kilometers north, 200 kilometers west, and 500 kilometers south. How far is she from her starting point?
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She is
\sqrt{200^2+200^2}=  ~282.84 kilometers away from her starting point
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A scientist claimed that fabric A is better able to resist fire than fabric B. Which option describes an experiment that will pr
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B. Hold each type of fabric over a candle flame and time how long it takes for the fabric to start to burn.

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What role does team collaboration play in successfully planning a mission to Mars?
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3 years ago
Electric fields are vector quantities whose magnitudes are measured in units of volts/meter (V/m). Find the resultant electric f
musickatia [10]

Answer:

Er = 231.76 V/m, 27.23° to the left of E1

Explanation:

To find the resultant electric field, you can use the component method. Where you add the respective x-component and y-component of each vector:

E1:

E_1_x = 0V/m\\E_1_y=100V/m

E2:

Keep in mind that the x component of electric field E2 is directed to the left.

E_2_x= 150V/m*-sin(45) = 106.07 V/m\\E_2_y=150V/m*cos(45) = 106.07V/m

∑x: E_1_x+E_2_x = 0V/m - 106.07V/m = -106.07V/m

∑y: E_1_y + E_2_y = 100V/m + 106.07V/m = 206.07V/m

The magnitud of the resulting electric field can be found using pythagorean theorem. For the direction, we will use trigonometry.

||E_r||= \sqrt{(-106.07V/m)^2+(206.07V/m)^2} = 231.76 V/m\\\\\alpha = arctan(\frac{206.7 V/m}{-106.07 V/m}) = 117.24degrees

or 27.23° to the left of E1.

8 0
3 years ago
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