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# Time (seconds) The slope on a distance-time graph shows a ball moving from 20 m to 40 min 1s and from 40 m to 30 m in the next second. Which describes the ball's motion between 20 m and 80 m on the graph? O nonlinear, acceleration O nonlinear constant speed O linear, acceleration © linear constant speed   Then the answer would be d then  Answer: a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same sign as the  -4.0  µc charge.======electricstatic force between two point charges  is given by where k is coulomb's constant,  8.99×10⁹  n·m²/c², q₁ and q₂ are the point charges, and r is the distance between the two point charges.assign positive to q₁let q₁ =  6.0 µc, q₂ = -4.0  µc, q₀ represent the charge at the origin, and q₃ represent this new charge to place.the charge at the origin q₀ would experience the following force f₀₁ from q₁, with r = 6.0 m (note that 1  µc = 10⁻⁶ c) the force from q₂ the force from q₃ the net force on the origin charge, q₀, has to be zero for no electrostatic forcehaving an equation where k and q₀ can be divided out of the equation will allow us to solve for q₃ isolating: a charge of -1.0  × 10⁻⁴ c must be placed  at x = 26 m.the sign of the charge will be the same as the  -4.0  µc charge The answer is 4f======since electrostatic force is given by we let f be the electrostatic force when  r = 1 m if we let denote the electrostatic force when the distance is decreased so that r = 0.5m, then we established earlier that f = kq₁q₂. therefore the force will now be 4f.  ### Another question on Physics Physics, 22.06.2019 07:30
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Time (seconds) The slope on a distance-time graph shows a ball moving from 20 m to 40 min 1s and fr...
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