Roy took 5 hours to complete a journey. For the first 2 hours he travelled at an average speed of 65 km/h. For the rest of the journey he travelled at an average speed of 78 km/h. What was the total distance of the journey

Agalvanometer has an internal resistance of 100 ω and deflects full-scale at 2.00 ma. what size resistor should be added to the galvanometer to convert it to a milliammeter capable of reading up to 4.00 ma, and how should this resistor be connected to the galvanometer?

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

Why is it important always to use horizontal bars in unit fractions when performing unit conversions?