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3 years ago

Please help! Will mark Brainliest :)

Physics

2 answers:

Hunter-Best [27]3 years ago

6 0

Answer:

C) The direction the car is traveling

Explanation:

Velocity is a vector that contains both <em>direction</em> and <em>magnitude</em> (Speed)

We already know the magnitude... all you need is the direction.

Hope this helps :)

zepelin [54]3 years ago

3 0

Answer:

i have to say whether its correct or wrong yep

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Suppose that a conducting sphere is charged positively by some method. The charge is initially deposited on the left side of the

Sveta_85 [38]

Answer:

electrons will migrate untill there is uniform distribution of charge .

and sphere became uniformly charged

Explanation:

as conducting sphere is charged positively it is given . the left side of sphere is charged positively . there is negative charge on the left side that will be attracted by positive charge of right side .

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4 years ago

If a machine has an efficiency of 50% and an input of 3 J, what is the output?

uranmaximum [27]

Answer:

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3 years ago

Consider the three dip1acement vectors A = (3i - 3j) m, B = (i-4j) m, and C = (-2i + 5j) m. Use the component method to determin

tia_tia [17]

Answer with Explanation:

We are given that

A=3i-3j m

B=i-4 j m

C=-2i+5j m

a. $D=A+B+C$

$D=3i-3j+i-4j-2i+5j$

$D=2i-2j$

Compare with the vector r=xi+yj

We get x=2 and y=-2

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By using the formula $\mid r\mid=\sqrt{x^2+y^2}$

Direction: $\theta=tan^{-1}\frac{y}{x}$

By using the formula

Direction of D: $\theta=tan^{-1}(\frac{-2}{2})=tan^{-1}(-1)=tan^{-1}(-tan45^{\circ})=-45^{\circ}$

b.E=-A-B+C

$E=-3i+3j-i+4j-2i+5j$

$E=-6i+12j$

$\mid E\mid=\sqrt{(-6)^2+(12)^2}=13.4$ units

Direction of E= $\theta=tan^{-1}(\frac{12}{-6}=tan^{-1}(-2)=-63.4^{\circ}$

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4 years ago