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blondinia [14]
4 years ago
14

_________has heat Bill Nye Heat Video

Physics
1 answer:
kkurt [141]4 years ago
6 0

The word "Everything" belongs in the blank space.

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A box weighing 10 N is 4 m away from the fulcrum. How much force must be applied 1 m away on the opposite end of the fulcrum in
julia-pushkina [17]

Answer: Socratic

Explanation: i’m not sure but you can use Socratic it’s a good app that helps

4 0
3 years ago
For a particular reaction, Δ H ∘ = − 93.8 kJ and Δ S ∘ = − 156.1 J/K. Assuming these values change very little with temperature,
svetoff [14.1K]

To solve this problem it is necessary to apply the concepts related to Gibbs free energy and spontaneity

At constant temperature and pressure, the change in Gibbs free energy is defined as

\Delta G = \Delta H - T\Delta S

Where,

H = Entalpy

T = Temperature

S = Entropy

When the temperature is less than that number it is negative meaning it is a spontaneous reaction. \Delta  G is also always 0 when using single element reactions. In numerical that implies \Delta G = 0

At the equation then,

\Delta G = \Delta H - T\Delta S

0 = \Delta H - T\Delta S

\Delta H = T\Delta S

T = \frac{\Delta H}{\Delta S}

T = \frac{-93.8kJ}{-156.1J/K}

T = \frac{-93.8*10^3J}{-156.1J/K}

T = 600.89K}

Therefore the temperature changes the reaction from non-spontaneous to spontaneous is 600.89K

5 0
3 years ago
If you put something like a piece of cardboard between a magnet and an iron nail, the magnet still holds the nail in place, even
DENIUS [597]

Answer:

A magnet has a field having lines of force around it that moves through the air which is a nonpermeable medium that allows the passage of magnetic field lines of force. The cardboard is a similar nonpermeable medium and the magnetic lines of force pass through to induce magnetism in the iron nail which is a ferromagnetic material that becomes magnetized by the magnetic field from the magnet

The induced magnetism in the iron nails causes the reverse poles to form in the iron with the iron domain's induced north pole pointing in the direction of the south pole of the magnet and vice versa

The iron nail is then attracted to the magnet as like poles attract, thereby holding the iron nail in place with the cardboard in between, without direct contact between the nail and the magnet as the cardboard prevents the magnet from touching the iron nail held in place

Explanation:

3 0
3 years ago
Define Dissociation and Ionization?
STatiana [176]

Answer:

Dissociation- disconnection and lack of continuity between thoughts, memories, surroundings, actions, and identity.

Ionization- the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons, often in conjunction with other chemical changes.

Explanation:

7 0
3 years ago
Select the correct answer. Which statement best explains the relationship between electric force and the charges on two interact
shtirl [24]

Answer:

Electrical force is directly proportional to the product of the charges on the two objects.

7 0
3 years ago
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