This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
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Step 1: Answer Question 45. A) The small intestine is where most digestion and absorption happen. True B) The large intestine absorbs nutrients from food. False (It primarily absorbs water and electrolytes). Step 2: Answer Question 46. Three ways to prevent the dangers of electricity when using tools or devices are: • Use insulated tools. • Ensure your hands are dry before handling electrical devices. • Avoid overloading electrical sockets. Step 3: Answer Question 47. a) A circuit with two dry cells and one bulb: Imagine a diagram showing two dry cells (batteries) connected in series, meaning the positive terminal of one cell is connected to the negative terminal of the other. Wires connect the remaining positive terminal of the first cell to one terminal of a light bulb, and the remaining negative terminal of the second cell to the other terminal of the light bulb, forming a complete loop. b) Label all the parts of the circuit: • Dry cells (power source) • Wires (conductors) • Light bulb (load) Step 4: Answer Question 48. a) Some objects float in water while others sink due to their density. Objects that are less dense than water will float, while objects that are more dense than water will sink. b) Relative density is used in daily life activities such as: • Designing ships and boats to ensure they float. • Determining the purity of substances (e.g., milk, gold). Step 5: Answer Question 49. A glass containing ice cubes placed in open air becoming wet on its outer surface shows that: b) Air contains water vapour. (The cold surface of the glass causes the water vapor in the surrounding air to condense into liquid water droplets). Last free one today — make it count tomorrow, or type /upgrade for unlimited.