Inbox: 25 emails

Spam Folder: 15 emails

Priority – Personal: 3 emails (family, urgent personal matters)

Priority – School: 2 emails (important academic updates)

She receives 11 new emails. Some need urgent attention, others might be distractions, and a few could be dangerous. The spam filter will check and sort them accordingly.

Refer 'New Emails Received ' table from the referance image.

Email Sorting Rules

Priority – Personal: Family updates, urgent medical or personal matters.

Priority – School: Important school-related emails (meetings, scholarships, academic notices).

Inbox: Regular emails from known people or trusted sources (family, teachers, banks, useful services).

Spam Folder: Fake prize claims, phishing attempts, unknown senders asking for personal details, suspicious money offers.

Question Aisha's email system has automatically sorted the 11 new emails into different folders. Based on the rules, what will be the new total count for each folder?

Refer 'New Emails Received' table from the referance image.

How the Spam Filter Works

Inbox: Emails from known people (family, teachers, school, trusted companies, etc.) and useful updates.

Spam Folder: Emails from unknown senders, fake prize claims, urgent warnings, or emails pretending to be from a bank.

Question After sorting the emails, how many will be in Aisha’s Inbox, and how many will be moved to the spam folder?

To successfully launch 12 satellites into geostationary orbit, the chosen rocket must meet the following requirements:

Capacity: Must carry all 12 satellites

Fuel Requirement: Capacity to carry enough fuel to achieve escape velocity (11.2 km/s) and break free from Earth's gravity

Refer table for 'Satellite Categories and Weights' from the referance image.

Launch Vehicle Constraints

Each launch vehicle has:

Total Launch Mass – The maximum weight the rocket can carry, including satellites and fuel.

Rocket Structural Weight – The weight of the rocket itself, without any fuel or payload.

Fuel Factor - Determines the fuel required based on the weight of the satellites being carried.

Refer table for 'Rocket Options' from the referance image.

New Challenge

One Research Satellite has been removed due to technical issues and another communication satellite was replaced by one which is 3/4 of its weight.

Which launch vehicle should the engineers choose for the mission? Provide detailed calculations and reasoning for your answer.

To successfully launch 12 satellites into geostationary orbit, the chosen rocket must meet the following requirements:

Capacity: Must carry all 12 satellites

Fuel Requirement: At least 10,500 kg of fuel to achieve escape velocity (11.2 km/s) and break free from Earth's gravity

Refer table for 'Satellite Categories and Weights' from the referance image.

Original Plan

The mission initially included 12 satellites, and the selected rocket had to carry its total weight and the necessary fuel for launch.

New Challenge

Due to recent adjustments, one Research Satellite (900 kg) has been removed from the mission. This reduces the total payload weight, meaning the scientists must reconsider their rocket choice to ensure an efficient and successful launch.

Rocket Options

Rocket Alpha – Up to 18,500 kg

Rocket Beta – Up to 19,800 kg

Rocket Gamma – Up to 20,500 kg

Rocket Delta – Up to 21,000 kg

Which rocket should they choose for the most efficient launch?