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ValentinkaMS [17]

3 years ago

13

Cho đoạn thẳng OAB. Đặt điện tích q tại O thì cường độ điện trường do nó gây ra ở A là EA =1600V/m,tạiBlàEB =100V/m.Cường độ điệ

n trường do điện tích q gây ra ở trung điểm của đoạn AB là

1 answer:

BlackZzzverrR [31]3 years ago

8 0

Answer:.

Explanation:

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Can you have a positive velocity but a negative acceleration? I need this to complete my physics hw :/

kirill115 [55]

Answer: Positive velocity is then speed towards right, and negative velocity is speed towards left. It is the same for acceleration: negative acceleration is acceleration towards left. It slows objects moving towards right

Explanation: In physics calculations, acceleration — just like displacement and velocity — can be positive or negative. can u help me now pls ?

8 0

3 years ago

you and 3 friends apply a combined force of 489.5n to push a piano. The amount of work done is 1762.2j. What distance did the pi

aleksandr82 [10.1K]

Answer: 3.6m

Explanation:

Work done = force * distance

Distance = workdone / force

D= 1762.2J / 489.5n

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5 0

3 years ago

Need help with dot product

slavikrds [6]

$\textbf{A}\cdot\textbf{B} = 11.5$

Explanation:

The dot product between two vectors $\textbf{A}$ and $\textbf{B}$ is defined as

$\textbf{A}\cdot\textbf{B} = AB\cos{\theta}$

where A and B are the magnitudes of the vectors $\textbf{A}$ and $\textbf{B},$ respectively and $\theta$ is the angle between the two. Since A = 3, B = 5 and $\theta = 40°,$ the dot product $\textbf{A}\cdot\textbf{B}$ is

$\textbf{A}\cdot\textbf{B} = (3)(5)(0.766) = 11.5$

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2 years ago

Self-fulfilling prophecy is a primary example of the capability of language to .

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<span>Self-fulfilling prophecy is a primary example of the capability of language to
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3 0

3 years ago

Two 5000-kg passenger cars roll without friction (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They co

balu736 [363]

The combined momentum of the passengers is 5000 kgm/s.

<h3>Combined momentum of the passenger</h3>

The combined momentum of the passengers is calculated as follows;

P = mv1 + mv2

where;

m is mass of the passengers
v1 is velocity of the first passenger
v2 is velocity of the second passenger

P = m(v1 + v2)

P = 5000(-1 + 2)

P = 5000 kgm/s

Thus, the combined momentum of the passengers is 5000 kgm/s.

Learn more about momentum here: brainly.com/question/7538238

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2 years ago