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Sindrei [870]
3 years ago
12

Electric fields are vector quantities whose magnitudes are measured in units of bolts/meter(v/m) find the resultant electric fie

ld when there are two fields, E_1 and E_2, where E_1 is directed vertically upward and has magnitude 100V/m and E_2 is directed 45 to the left of E_1 and has magnitude 150V/m.
Physics
1 answer:
Grace [21]3 years ago
8 0
E_{x} =-150 cos45 = -106.066 V/m

 E_{y} =100+150 sin45= 206.066 V/m
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3 years ago
A particle of mass m= 2.5 kg has velocity of v = 2 i m/s, when it is at the origin (0,0). Determine the z- component of the angu
melomori [17]

Answer:

please read the answer below

Explanation:

The angular momentum is given by

|\vec{L}|=|\vec{r}\ X \ \vec{p}|=m(rvsin\theta)

By taking into account the angles between the vectors r and v in each case we obtain:

a)

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L=(2.5kg)(1)(2\frac{m}{s})sin90\°=5.0kg\frac{m}{s}

b)

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L=(2.5kg)(1)(2\frac{m}{s})sin90\°=5.0kg\frac{m}{s}

c)

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d)

r=(-1,0)

angle = 180°

r and v are parallel

L = 0kgm/s

e)

r=(1,1)

angle = 45°

L = (2.5kg)(2\frac{m}{s})(\sqrt{2})sin45\°=5kg\frac{m}{s}

f)

r=(-1,1)

angle = 45°

the same as e):

L = 5kgm/s

g)

r=(-1,-1)

angle = 135°

L=(2.5kg)(2\frac{m}{s})(\sqrt{2})sin135\°=5kg\frac{m}{s}

h)

r=(1,-1)

angle = 135°

the same as g):

L = 5kgm/s

hope this helps!!

4 0
4 years ago
The speed of sound in steel is greater than it is in air because
vladimir2022 [97]
The best and most correct answer among the choices provided by your question is the third choice or letter C.

<span>The speed of sound in steel is greater than it is in air because steel is more dense than air.</span>

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
7 0
3 years ago
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