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☆Chemical Compounds Names - ★ Acetic acid formula ➷  CH3COOH ★ Aluminium hydroxide formula ➷ Al(OH)3 ★ Acetate formula ➷ CH3COO- ★ Acetone formula ➷ C3H6O ★ Aluminium acetate formula ➷ Al2O(C2H3O2)4 ★ Aluminum bromide formula  ➷ AlBr3 ★ Aluminum carbonate formula ➷ Al2(CO3)3 ★ Aluminum chloride formula  ➷ AlCl3 ★ Aluminum fluoride formula  ➷ AlF3 ★ Aluminum formula ➷ Al ★ Aluminum iodide formula ➷ AlI3 ★ Aluminum oxide formula ➷ Al2O3 ★ Aluminum phosphate formula ➷ AlPO4 ★ Amino acid formula   ➷ R(NH2)-COOH ★ Ammonia formula  ➷ NH4 ★ Ammonium dichromate formula ➷ Cr2H8N2O7 BY ETHYL BENZOATE JOIN: @EthioSchool_12 😊

የአዲስ አበባ ከተማ ፣ የአራዳ ክ/ከተማ የናቹራሎች 2016ዓም 2ኛ ሴሚስተር ሞዴል ፈተና (Model Question) ⬇️  ፡፡

እንኳን ለብርሃነ ትንሳዔው አደረሳችሁ!! . . we hope you have an eggs-tra special Easter Sunday 😊🙌 ✨መልካም በዓል 🫶 @EthiopianStudentsTM

ሁሉም ተማሪ መሞከር አለበት 👇 Work, Energy, and Power: 1. (JEE Advanced level)    An object of mass 2 kg is thrown vertically upwards with an initial speed of 20 m/s. The air resistance is proportional to the square of the velocity and the force constant is 3 N s^2/m^4. The height achieved by the object before it starts coming down will be closest to:    A) 20 m    B) 25 m    C) 30 m    D) 35 m    2. (AP Physics C level)    A 50-kg runner runs up a staircase of 30 steps each 15 cm high in 6 s. When the runner reaches the top, his speed is 1 m/s. The average power delivered by the runner is closest to:    A) 500 W    B) 550 W    C) 600 W    D) 650 W 3. (Gaokao level)    A block of mass 'm' is gently placed on a spring of spring constant 'k'. The block is then pushed down compressing the spring by a distance 'x' and released. If the block loses half of its kinetic energy due to non-conservative forces before coming to rest, the coefficient of friction between the block and the surface is closest to:    A) 0.25    B) 0.30    C) 0.35    D) 0.40 4. (NCERT level)    Two blocks of masses 2 kg and 3 kg are connected by a light string over a pulley. The coefficient of kinetic friction between the 3 kg block and the surface is 0.2. If the 2 kg block is pulled to the right with a force of 10 N, the acceleration of the system is closest to:    A) 1 m/s^2    B) 1.5 m/s^2    C) 2 m/s^2    D) 2.5 m/s^2 5. (Jambo level)    A roller coaster car of mass 500 kg starts from rest at a height of 50 m above the ground. It rolls down a frictionless track and up a second hill with a height of 25 m. The speed of the car at the bottom of the second hill is closest to:    A) 30 m/s    B) 35 m/s    C) 40 m/s    D) 45 m/s ቀድሞ የሰራ መልሶቻቸሁን ወደ (@EntranceGroup9_12) : ከዛም መልሱን የምንለቅ ይሆናል ። 😊