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adoni [48]
3 years ago
5

Two ping pong balls have been painted with metallic paint and charged by contact with an Van de Graaff generator. The charge on

the balls are -3.31x10-7 C and -5.7x10-7 C. Determine the force of electrical repulsion in Newtons when held a distance of 22 cm apart. ________N (round to two decimal places) LaTeX: F=k\frac{q^1q^2}{d^2} F = k q 1 q 2 d 2 k = 9.0x109 Nm2/C2
Physics
2 answers:
sdas [7]3 years ago
7 0

Given Information:  

Charge on ball 1 = q₁ = -3.31x10⁻⁷ C

Charge on ball 2 = q₂ = -5.7x10⁻⁷ C

Distance = r = 22 cm = 0.22 m

Required Information:  

Force of electrical repulsion = F = ?

Answer:

Force of electrical repulsion = 3.51x10⁻² N

Explanation:

The force of electrical repulsion is given by

F = kq₁q₂/r²

Where k is the coulomb constant, q₁ is the charge on ball 1 and q₂ is the charge on ball 2 and r is the distance between these balls.

F = (9x10⁹*-3.31x10⁻⁷*-5.7x10⁻⁷)/(0.22)²

F = 3.51x10⁻² N

Therefore, the force of electrical repulsion between two balls is 3.51x10⁻² N.

andre [41]3 years ago
6 0

Answer:

0.035 N

Explanation:

Parameters given:

Charge q1 = -3.31x10^(-7) C

Charge q2 = -5.7x10^(-7) C.

Distance between them, R = 22 cm = 0.22 m

Electrostatic force between to particles is given as:

F = (k* q1 * q2) / R²

F = (9 * 10^9 * -3.31 * 10^(-7) * -5.7 * 10^(-7)) / 0.22²

F = 0.035 N

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A race car traveling at 10 meters per second accelerates at 1.5 meters per second squared while moving a distance of 600 meters.
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Answer:

Explanation:

Givens

vi = 10 m/s

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vf = ?

Formula

vf^2 = vi^2 + 2*a*d

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What is the mass of a cylinder of lead that is 1.80 in in diameter, and 4.12 in long. the density of lead is 11.4 g/ml?
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4 years ago
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Which is likely to be more common in our Galaxy: white dwarfs or black holes? Why?
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Una caja de 5.0kg de masa se acelera desde el reposo a través del piso mediante una fuerza a una tasa de 2.0 /s2 durante 7.0s en
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Responder:

<h2>490 julios </h2>

Explicación:

Se dice que el trabajo se realiza cuando una fuerza aplicada a un objeto hace que el objeto se mueva a través de una distancia. El trabajo realizado por un cuerpo se expresa mediante la fórmula;

Workdone = Fuerza * Distancia

Como Fuerza = masa * aceleración,

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Para obtener d, usaremos una de las leyes del movimiento,

d = ut + 1 / 2at²

u = 0 (ya que el cuerpo acelera desde el reposo) yt = 7.0s

d = 0 + 1/2 (2) (7) ²

d = 49m

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Workdone = 490 Julios

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3 years ago
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