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marshall27 [118]
3 years ago
5

Which metal is liquid at room temperature?

Physics
2 answers:
White raven [17]3 years ago
7 0
D. mercury.............
Paul [167]3 years ago
5 0
Mercury will be our answer.

As we know, our lovely thermometers contain mercury (mostly old fashioned kinds now), and the only way that we could see the temperature through a thermometer was by seeing the liquid inside of the thermometer rise and fall. If mercury were to be a solid, then it wouldn't be able to rise or fall.
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How do you make the chemical equations LiOH+H2(SO4) and H2O+Li2(SO4) balanced?
Likurg_2 [28]

Answer:

here

Explanation:

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Pls answer fast and correct i will give brainlest who ever gets it correct
Brrunno [24]
The boys body will continue to move in a forward motion, the stairs an an will make the skateboard come to a complete stop because the force of the stairs is much greater, this makes in an unbalanced force. This is and example of inertia of motion.
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For the chemical reaction C2H6 --> C2H4 + H2 + 137kJ, the chemical energy of the A. reactant and the chemical energy of the p
Goryan [66]

Answer: The chemical energy of reactants is greater than the chemical energy of products.

Explanation: In the given reaction

C_2H_6\rightarrow C_2H_4 + H_2 +137 kJ

It can be seen that the energy has been released. Thus we can say that reactants have converted to products by release of energy. Thus energy of products is less as compared to energy of reactants as some of the energy has been released.


4 0
3 years ago
Read 2 more answers
Two 10-cm-diameter charged rings face each other, 25 cm apart. The left ring is charged to ? 25 nC and the right ring is charged
MArishka [77]

Answer:

A)   E = 0N/C

B)   0i + 0^^j

C)   F = 0N

D)   0^i  + 0^j

Explanation:

You assume that the rings are in the zy plane but in different positions.

Furthermore, you can consider that the origin of coordinates is at the midway between the rings.

A) In order to calculate the magnitude of the electric field at the middle of the rings, you take into account that the electric field produced by each ring at the origin is opposite to each other and parallel to the x axis.

You use the following formula for the electric field produced by a charge ring at a perpendicular distance of r:

E=k\frac{rQ}{(r+R^2)^{3/2}}               (1)

k: Coulomb's constant = 8.98*10^9Nm^2/C

Q: charge of the ring

r: perpendicular distance to the center of the ring

R: radius of the ring

You use the equation (1) to calculate the net electric field at the midpoint between the rings:

E=k\frac{rQ}{(r^2+R^2)^{3/2}}-k\frac{rQ}{(r^2+R^2)^{3/2}}=0\frac{N}{C}

The electric field produced by each ring has the same magnitude but opposite direction, then, the net electric field is zero.

B) The direction of the electric field is 0^i + 0^j

C) The magnitude of the force on a proton at the midpoint between the rings is:

F=qE=q(0N/C)=0N

D) The direction of the force is 0^i + 0^j

6 0
3 years ago
Classical mechanics is an extremely well tested model. Hundreds of years worth of experiments, as well as most feats of engineer
djyliett [7]

Answer:

The Answer is 0.019998c

Explanation:

Please see the attached Picture for the answer.

7 0
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