Explanation

 Intelligence is influenced by multiple factors, including:

• heredity (genetics)
• environment (upbringing, social interactions)
• education (access to learning resources and opportunities)

Explanation

9th of Dhu'l-Hijjah: This is the Day of Arafat.

. After performing the dawn (Fajr) prayer at Mina, leave for Arafat on the morning of the 9th of Dhu'l-Hijjah.

Explanation

Pharaoh changes his mind and gives chase until he corners the fugitives at the Red Sea, whereupon Moses, at God's command, causes the waters to part so that the Israelites can pass safely across

Explanation

(b) How the carbohydrates, proteins, and fats are digested in humans? (5)

Carbohydrates:
Carbohydrates are broken down into glucose by enzymes like amylase in the mouth and small intestine.

Proteins:
Proteins are broken down into amino acids by pepsin in the stomach and proteases in the small intestine.

Fats:
Fats are emulsified by bile and then broken down into fatty acids and glycerol by lipase in the small intestine.

Explanation

Given:

1. The horizontal distance from Ali to the base of the tree = 10 m.
2. The vertical distance from Ali’s eyes to his feet = 1.5 m.
3. The hypotenuse from Ali’s eyes to the top of the tree = 15 m.

Step-by-step solution:

1. Let the height of the tree be $h$. Since Ali’s eyes are 1.5 m above the ground, the height of the tree above Ali’s eyes is $h - 1.5$.

2. Using the Pythagorean theorem in the triangle formed:

   $$$$10^2+(h−1.5)^2=152

3. Simplify:

   $$$$100+(h−1.5)^2=225

4. Subtract 100 from both sides:

   $$$$(h−1.5)^2=125

5. Take the square root of both sides:

   $$h - 1.5 = sqrt{125}$$ $$h-1.5\approx 11.18$$

6. Add 1.5 to both sides to get $h$:

   $$$$h=11.18+1.5=12.68 m

Explanation

The Cabinet Mission Plan, proposed in 1946, was a plan to establish a three-tiered federal government in British India: 

1. Central government: Limited to power over defense, foreign relations, currency, and communication 
2. Groups of provinces: Three groups, A, B, and C, focused on the three parts of India: Northwest India, Eastern India, and central portions of India 
3. Individual provinces: Placed at the bottom of the structure

Explanation

Ahmad stands at point D, 2m in front of a spotlight at point A. He is 1.6m tall and is facing the wall of a building which is 10.5m away from him. How tall (BC) is his shadow on the wall of the building (5 marks)

To find the height $BC$ of Ahmad's shadow on the wall of the building, we can use the properties of similar triangles.

Given:

1. Ahmad's height $DE = 1.6$ m.
2. Distance from the spotlight at $A$ to Ahmad at $D$is $2$ m.
3. Distance from Ahmad at $D$ to the wall at $B$ is $10.5$ m.
4. Total distance $AB = 2 + 10.5 = 12.5$m.

Using similar triangles:

$$$$BCAB=DEAD​

Substitute the values:

$$frac{BC}{12.5} = frac{1.6}{2}$$ $$BC = 12.5 times frac{1.6}{2} = 12.5 times 0.8 = 10 text{ m}$$

Height $BC = 10$ m.

Explanation

If y is directly proportional to x², it means that:

y ∝ x²

This can be written as an equation:

y = kx²

where k is the constant of proportionality.

Given Information:

We are given that y = m for a particular value of x. Let's call this value x₁.

So, we have:

m = kx₁²

Doubling the Value of x:

Now, we double the value of x. Let's call this new value x₂. So, x₂ = 2x₁.

We want to find the new value of y, let's call it y₂, when x = x₂.

Using the proportionality equation:

y₂ = kx₂²

Substitute x₂ = 2x₁:

y₂ = k(2x₁)²

y₂ = 4kx₁²

Substituting the value of kx₁² from the first equation:

We know that kx₁² = m. So, we can substitute this into the equation for y₂:

y₂ = 4m

Explanation

Explanation

The scintillation nuclear radiation detector detects the alpha rays per second. When the energy of the alpha rays (Eα) in MeV increases, the number of counts (Nc) on the detector also increases linearly as shown in the table below. 

Draw the graph of Nc as a function of Eα (MeV) and find the energy of the unknown alpha ray if the number of counts is 31600.