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Andrei [34K]
3 years ago
6

How do I do balance equations?

Physics
1 answer:
san4es73 [151]3 years ago
4 0

Answer:

1. Count the atoms of each element in the reactants and the products.

2. Use coefficients; place them in front of the compounds as needed.

Explanation:

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A protein molecule in an electrophoresis gel has a negative charge. The exact charge depends on the pH of the solution, but 30 e
Reika [66]

Answer:

7.401 * 10^(-15) N

Explanation:

30 electrons will have a charge:

30 * -1.6022 * 10^(-19) C

= - 4.806 * 10^(-18) C

The relationship between electric field and electric force is:

E = F/q

This means that force, F, is

|F| = |E|*|q|

|F| = |1540| * |-4.806 * 10^(-18)|

|F| = |-7401.24 * 10^(-18)|

|F| = 7.401 * 10^(-15) N

7 0
3 years ago
A 60 kg hockey player skating at 20 m/s gets slammed with a force of 950 N. How long does it take him to stop completely?
irakobra [83]

Answer:

2.4

Explanation:

8 0
3 years ago
Any help guys? I am stuck on two problems.
Juli2301 [7.4K]

Ax=A*Cos56

   = 20*(0.559)

   = 11.18 N

8 0
3 years ago
Hydrogen is found in three different states inside Jupiter, ______, liquid, and liquid ______.
tekilochka [14]

Answer:

gas, metal

Explanation:

The three states of by which hydrogen is found in Jupiter is made up of:

  1. Gaseous hydrogen
  2. liquid hydrogen
  3. liquid metal hydrogen

This is also the same states found in Saturn too.

The pressure inside the largest planet in our solar system is very great.

  • Hydrogen and helium makes up the entirety of the planet Jupiter.
  • It has been discovered that inside this planet, hydrogen often occurs as gas, liquid and metal
  • This is often attributed to the huge amount of pressure in the planet.
7 0
3 years ago
Please help! I'm not sure what equation or the process to do this question.
lions [1.4K]

Answer:

The momentum is 1.94 kg m/s.

Explanation:

To solve this problem we equate the potential energy of the spring with the kinetic energy of the ball.

The potential energy U of the compressed spring is given by

U = \dfrac{1}{2} kx^2,

where x is the length of compression and k is the spring constant.

And the kinetic energy of the ball is

K.E = \dfrac{1}{2}mv^2.

When the spring is released all of the potential energy of the spring goes into the kinetic energy of the ball; therefore,

\dfrac{1}{2}mv^2 = \dfrac{1}{2}kx^2,

solving for v we get:

v = x \sqrt{\dfrac{k}{m} }.

And since momentum of the ball is p=mv,

p =mx \sqrt{\dfrac{k}{m} }.

Putting in numbers we get:

p =(0.5kg)(0.25m) \sqrt{\dfrac{(120N/m)}{0.5kg} }.

\boxed{p=1.94kg\: m/s}

5 0
3 years ago
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