Encouraging a child to study can be a challenging task, but with the right approach, you can help them develop good study habits and a love for learning. Here are some tips to get you started: 1. Create a Conducive Study Environment - Designate a study space: Set aside a dedicated area for studying, free from distractions and interruptions. - Ensure good lighting and seating: Provide a comfortable and well-lit space that promotes focus and productivity. - Minimize digital distractions: Consider using website blockers or apps that help minimize digital distractions. 2. Set Clear Goals and Expectations - Set specific goals: Help your child set achievable goals, both short-term and long-term. - Break down larger goals: Divide larger goals into smaller, manageable tasks to help your child stay focused. - Celebrate progress: Acknowledge and celebrate your child's progress, no matter how small. 3. Make Learning Fun - Use interactive learning tools: Incorporate games, puzzles, and inte...
Question 1 A source of sound wave of frequency 660Hz emits waves of wavelength 0.12m in air at 40 o C. What is the velocity of sound wave in air at this temperature? What would be the wavelength of sound wave from the source in air at 70 o C? Answer Frequency = f = 660Hz Wavelength= λ = 0.12m Temperature = 40+273 = 313K Velocity of sound wave at 40 0 C V = fλ = 660 x0.12 =79.2m/s Wavelength of wave at 70 0 C Note: to find the wavelength, we must find the velocity of the sound wave at 70 0 C. Velocity of sound wave is directly proportional to the square root of its temperature in kelvin. V 1 /V 2 = √T 1 /√T 2 V 1 = 79.2m/s T 1 = 313K T 2 = 70 + 273 = 343K 79.2/V 2 = √313/√343 79.2 2 /(V 2 ) 2 = 313/343 313(V 2 ) 2 = 79.2 2 x 343= 2151515.52 (V 2 ) 2 = 2151515.52/313 (V 2 ) 2 = 6873.9 V 2 = √6873.9 = 82.9m/s Since V=fλ then 82.9 = 660 x λ .λ = 82.9/660 =0.13m Question II A sound wave of v...