2 years ago

PLEEEEASE HELP ME PLEASE WILL GIVE BRAINLIEST

Physics

1 answer:

Drupady [299]2 years ago

8 0

C. 7.8 hz I think! Hope this helped ☺️

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A point charge q1q1 is held stationary at the origin. A second charge q2q2 is placed at point aa, and the electric potential ene

Yuri [45]

Explanation:

The given data is as follows.

$U_{a} = 5.4 \times 10^{-8} J$

$W_{/text{a to b}} = -1.9 \times 10^{-8} J$

Electric potential energy ( $U_{b}$ ) = ?

Formula to calculate electric potential energy is as follows.

$U_{b} = U_{a} - W_{/text{a to b}}$

= $5.4 \times 10^{-8} J - (-1.9 \times 10^{-8} J)$

= $7.3 \times 10^{-8} J$

Thus, we can conclude that the electric potential energy of the pair of charges when the second charge is at point b is $7.3 \times 10^{-8} J$ .

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3 years ago

A book, that has a mass of 0.5 grams, is pushed across a table with a force of 20 newtons. What is the acceleration of the book?

Bas_tet [7]

Answer:

$4\cdot 10^4 m/s^2$

Explanation:

The acceleration of an object is given by Newton's second law:

$a=\frac{F}{m}$

where

F is the net force applied on the object

m is the mass of the object

For the book in the problem, we have:

$m=0.5 g =5\cdot 10^{-4} kg$ is the mass

$F=20 N$ is the force applied

Substituting into the formula, we find the acceleration:

$a=\frac{20 N}{5\cdot 10^{-4} kg}=4\cdot 10^4 m/s^2$

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2 years ago

Calculate Kinetic Energy The potential energy of a swing is 200 J

RUDIKE [14]

Answer:

150J

Explanation:

Pi = Pf + Kf

200 = 50 + Kf

---> Kf = 150J

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2 years ago

A school track team member ran for a total of 15.85 miles in practice over 5 days. How many miles did he average per day?

liraira [26]

${\underline{\pink{\textsf{\textbf{ Answer : }}}}}$

➡ 15.85/5

➡ 3.17 ans.

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2 years ago

PLEASE HELP ASAP BEST ANSWER WILL BE MARKED BRAINLIEST!!!!!

umka2103 [35]

Answer:

i think its The movement of large pieces of ice from one place to another.

Explanation:

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2 years ago