[Komal Bisht]

When repairing an electric switch at your home, it is crucial for an electrician to use rubber gloves for various important reasons. Rubber gloves serve as a protective barrier between the electrician’s hands and the electrical current, ensuring their safety and preventing electrical accidents.

1.INSULATION : Rubber gloves are excellent insulators that prevent the flow of electricity through the body. When working with electrical components, there is always a risk of accidental contact with live wires or exposed parts. If the electrician were to touch these components without protective gloves, the electrical current could pass through their body, leading to electric shock or even electrocution. Rubber gloves, being non-conductive, act as a barrier, preventing the electric current from passing through and protecting the electrician from harm.

2. SHOCK PREVENTION : Rubber gloves provide insulation against potential electrical hazards. Electrical systems are designed to carry a specific amount of voltage, which can cause harm if directly exposed to the body. By wearing rubber gloves, the electrician minimizes the risk of electrical burns, as the gloves act as a layer of protection against the heat generated by electrical currents.

Additionally, rubber gloves offer protection against other potential hazards encountered during electrical repairs. They act as a shield against accidental contact with sharp edges or objects, preventing cuts, scrapes, or puncture wounds. Moreover, they provide insulation against chemical substances that may be present in electrical components or wiring, safeguarding the electrician from potential skin irritations or burns caused by corrosive materials.

In summary, electricians should use rubber gloves while repairing an electric switch at your home to ensure their safety. Rubber gloves serve as a protective barrier, preventing electrical current from passing through the body and minimizing the risk of electric shock, burns, cuts, and exposure to hazardous substances. By wearing rubber gloves, electricians can confidently work on electrical systems, knowing they have taken necessary precautions to protect themselves from potential dangers.

[Komal Bisht]

Yes, it is possible to cultivate plants without soil by employing alternative techniques such as hydroponics, aeroponics, and aquaponics. These methods provide several advantages and opportunities for plant growth:

1. Hydroponics involves growing plants in a nutrient-rich water solution, bypassing the need for soil. This method ensures efficient nutrient absorption, disease prevention, and faster growth rates due to optimal growing conditions.

2. Aeroponics cultivates plants in an air or mist environment without soil, where plant roots are suspended and receive a fine mist of nutrient-rich water. This approach promotes rapid growth and maximizes nutrient uptake, as plants can direct their energy toward growth and yield.

3. Aquaponics combines hydroponics and fish farming, utilizing fish waste as a natural fertilizer for plant growth. The plants purify the water for the fish while receiving essential nutrients, leading to sustainable and resource-efficient cultivation.

These methods offer advantages such as precise nutrient delivery, controlled environments, reduced water usage, and the ability to grow plants in areas with poor soil quality. It is important to note that successful implementation requires proper knowledge and management of these systems.

[Komal Bisht]

To find the area of a square park, length of one side of square should be known.

The perimeter of the square park is 480m (given) , hence we can calculate the length of one side by dividing the perimeter by 4 (since a square has four equal sides).

Length of one side = Perimeter / 4 = 480m / 4 = 120m

Now that we know the length of one side, we can calculate the area of the square park by squaring the length of one side.

Area of square park = (Length of one side)^2 = 120m^2 = 14,400m^2

Therefore, the area of the square park is 14,400 square meters.

[Komal Bisht]

To find the number of possible values for b in the quadratic equation x^2 + bx + 72 = 0, which has 2 distinct integer roots, we can use the fact that the product of the roots of a quadratic equation is equal to the constant term divided by the coefficient of the squared term. Also the sum of roots is equal to the coefficient of x which is -b/x^2.

In this case, the constant term is 72 and the coefficient of the squared term is 1. Therefore, the product of the roots is 72.

To have 2 distinct integer roots, the product of the roots must be factorable into two different pairs of integers whose difference is not zero.

The factors of 72 are: 1, 72 2, 36 3, 24 4, 18 6, 12 8, 9.

Therefore, there are 6 possible values for b in the given quadratic equation.

Pair (1, 72): For this pair, the sum of the roots is 1 + 72 = 73. Since the sum of the roots of a quadratic equation is equal to the negation of the coefficient of the linear term (b), we have b = -73.

Pair (2, 36): The sum of the roots is 2 + 36 = 38, so b = -38.

Pair (3, 24): The sum of the roots is 3 + 24 = 27, so b = -27.

Pair (4, 18): The sum of the roots is 4 + 18 = 22, so b = -22.

Pair (6, 12): The sum of the roots is 6 + 12 = 18, so b = -18.

Pair (8, 9): The sum of the roots is 8 + 9 = 17, so b = -17.

Therefore, the possible values for b in the given quadratic equation x^2 + bx + 72 = 0, with 2 distinct integer roots, are: b = -73, -38, -27, -22, -18, -17.