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prisoha [69]
2 years ago
10

Products must equal which in a chemical reaction?

Physics
1 answer:
Evgesh-ka [11]2 years ago
3 0

I think it is reactants

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In each part calculate the kinetic energy of the given objects in joules a) an automobile whose mass is 1260kg moving at a speed
Contact [7]

a)

Kinetic energy (KE) = 1/2 m v^2

Where:

m = mass = 1260 kg

v = speed = 66.3 km/h = 18.42 m/s

Replacing:

KE = 1/2 (1260 kg ) (18.42 m/s )^2 = 213,756.7 J

5 0
1 year ago
My Notes An electron is released from rest on the axis of a uniform positively charged ring, 0.500 m from the ring's center. If
dsp73

Answer:

Velocity of the electron = v = 1.2\times 10^8\ m/s.

Explanation:

Given,

  • Mass of the electron = m_e\ =\ 9\times 10^{-31}\ kg
  • Charge on the electron = q_e\ =\ 1.62\times 10^{-19}\ C
  • Charge density of the ring = \rho\ =\ +1.00\times 10^{-6}\ C/m
  • Radius of the ring = R = 0.70 m
  • Distance between the electron ant the center or the ring = x = 0.5 m

Now total charge on the ring = Q\ =\ \rho\times 2\pi R

Potential energy due to the charged ring to the point on the x-axis is

P.E.\ =\ \dfrac{KQq_e}{\sqrt{R^2\ +\ x^2}}\\

Let v be the velocity of the electron at the center of the ring.

Total kinetic energy of the electron = \dfrac{1}{2}m_ev^2\\

Now, From the conservation of energy,

the total potential energy of the electron at initially is converted to the total kinetic energy of the electron at the center of the ring,

\therefore P.E.\ =\ K.E.\\\Rightarrow \dfrac{KQ}{\sqrt{R^2\ +\ x^2}}\ =\ \dfrac{1}{2}m_ev^2\\\Rightarrow v\ =\ sqrt{\dfrac{2 KQq_e}{m_e\sqrt{R^2\ +\ x^2}}}\\\Rightarrow v\ =\ \sqrt{\dfrac{2Kq_e\rho \times 2\pi R}{m_e\sqrt{R^2\ +\ x^2}}}\\\Rightarrow v\ =\ \sqrt{\dfrac{2\times 9\times 10^9\times 1.0\times 10^{-6}\times 2\times 3.14\times 0.7\times 1.6\times 10^{-19}}{9\times 10^{-31}\times \sqrt{0.7^2\ +\ 0.5^2}}}\\\Rightarrow v\ =\ 1.2\times 10^8\ m/s.

Hence the velocity of the electron on the center of the charged ring is 1.2\times 10^8\ m/s.

5 0
3 years ago
This is a ______________________reaction.
miskamm [114]

Answer:

Chain reaction?

Explanation:

7 0
3 years ago
Read 2 more answers
Which of the following can provide direct current?
Akimi4 [234]
The answer is d) batteries

mark as brainliest if it’s helpful
7 0
3 years ago
When water molecules are disappearing into the air, there is a net _______?
MrRa [10]
Evaporation would be the answer.



7 0
3 years ago
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