To model time-variant data, one must create a new entity in an m:n relationship with the original entity, is a False statement.
- Like the majority of software engineering initiatives, the ER process begins with gathering user requirements. What information must be retained, what questions must be answered, and what business rules must be implemented (For instance, if the manager column in the DEPARTMENT table is the only column, we have simply committed to having one manager for each department.)
- The end result of the E-R modeling procedure is an E-R diagram that can be roughly mechanically transformed into a set of tables. Tables will represent both entities and relationships; entity tables frequently have a single primary key, but the primary key for relationship tables nearly invariably involves numerous characteristics.
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Property of all ionic compounds make them electrolytes;
An electrolyte is a compound that conducts an electric current it is also in the form of aqueous solution or in the molten state, the ionic compounds are electrolytes because they dissociate into ions.
Explanation:
- Property of all ionic compounds make them electrolytes;
- An electrolyte is a compound that conducts an electric current it is also in the form of aqueous solution or in the molten state, the ionic compounds are electrolytes because they dissociate into ions.
- Most of the unique properties come from the hydrogen bonds which holds the water together.
- when a solutes break away from the crystal, the negatively and positively charged ions become surrounded by solvent molecules and it dissolves the ionic crystal.
As the box compresses the spring, the spring performs
-1/2 (85 N/m) (0.065 m)² ≈ -0.18 J
of work on the box. By the work energy theorem, the total work performed on the box (which is done only by the spring since there's no friction) is equal to the change in the box's kinetic energy. At full compression, the box has zero instantaneous speed, so
<em>W</em> = ∆<em>K</em> ==> -0.18 J = 0 - 1/2 (2.5 kg) <em>v</em> ²
where <em>v</em> is the box's speed when it first comes into contact with the spring. Solve for <em>v</em> :
<em>v</em> ² ≈ 0.14 m²/s² ==> <em>v</em> ≈ 0.38 m/s
This might sound wrong, but it's right.
The electron microscope.
that is the answer
1.4 x 1/1000 x 60
= 0.0014 x 60
= 0.084 km/min
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