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2 years ago

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The diagram shows the electric field around two charged objects. What is the best conclusion about the charges that can be made

based on the diagram? Y is negative, and Z is positive. Y is negative, and Z is negative. Y and Z are like charges, but their identities cannot be determined. Y and Z are opposite charges, but their identities cannot be determined.

2 answers:

Lemur [1.5K]2 years ago

8 0

The Correct answer is (B), Because the reject each other.

Aloiza [94]2 years ago

5 0

Answer:

D) Y and Z are opposite charges, but their identities cannot be determined.

Two circles representing oppositely charged spheres are labeled Y and Z. There are lines perpendicular to each circle in all directions and bent towards the other circle.

Explanation:

EDG 2020

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Answer:

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A gas is compressed from 600 cm3 to 200cm3 at a constant pressure of 400 kpa. at the same time, 100 j of heat energy is transfer

Mekhanik [1.2K]

The initial volume of the gas is
$V_i = 600 cm^3$
while its final volume is
$V_f = 200 cm^3$
so its variation of volume is
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The heat energy given to the gas is
$Q=+100 J$

And the change in internal energy of the gas can be found by using the first law of thermodynamics:
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2 years ago

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svetlana [45]

Answer:

7 deg

Explanation:

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$W$ = weight of the rod = $mg = (1.4) (9.8) = 13.72 N$

$k_{L}$ = spring constant for left spring = $59 Nm^{-1}$

$k_{R}$ = spring constant for right spring = $33 Nm^{-1}$

$x_{L}$ = stretch in the left spring

$x_{R}$ = stretch in the right spring

$L$ = length of the rod = 0.75 m

$\theta$ = Angle the rod makes with the horizontal

Using equilibrium of force in vertical direction for left spring

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Using equilibrium of force in vertical direction for right spring

$k_{R} x_{R} = (0.5) W\\(33) x_{R} = (0.5) (13.72)\\x_{R} = 0.208 m$

Angle made with the horizontal is given as

$\theta = tan^{-1}(\frac{(x_{R} - x_{L})}{L} )\\\theta = tan^{-1}(\frac{(0.208 - 0.116)}{0.75} )\\\theta = 7 deg$

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2 years ago