The Coulomb’s law is expressed mathematically as:
F = k * q1 * q2 / d^2
Where,
F = force of attraction between 2 particles = 2.0 N
<span> k = Coulomb’s
constant = 8.988 * 10^9 N m^2 / C^2</span>
q = charge of the particle
d = distance between the 2 particles = 1.35 m
Since the two coins have identical charges therefore q1 =
q2 =q
F = k* q^2 / d^2
2.0 N = (8.988 * 10^9 N m^2 / C^2) * q^2 / (1.35 m)^2
q =
2.01 * 10^-5 C
<span>Therefore each coins have charges equivalent to 2.01 *
10^-5 C.</span>
Answer:
Given:
Time taken: 3.5 hrs
Speed: 120mi/HR
Now we know that
distance = speed x time
Substituting the given values in the above formula we get
Distance= 120mi/hr x 3 hrs
Distance = 360 mi= 579.36 Km
Explanation:
Wave speed = frequency * wavelength
We need to rearrange this so wavelength is the subject. To do this, divide both sides by frequency to get :
Wave speed / frequency = wavelength
327 / 185 = 1.7675 m
Answer:
45.3°C
Explanation:
Heat gained = mass × specific heat × increase in temperature
q = mC (T − T₀)
Given C = 0.128 J/g/°C, m = 94.0 g, q = 305 J, and T₀ = 20.0°C:
305 J = (94.0 g) (0.128 J/g/°C) (T − 20.0°C)
T = 45.3°C
Answer:
The forces are balanced and the book is at rest.
Explanation:
When the forces (amount of Newtons) on an object are equal and in opposite directions, the forces are balanced, and there is no change in motion.
Hope this helps!
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