A mercury-in-glass thermometer reads – 20° at the ice point and 100° at the steam point. Calculate the Celcius temperature corresponding to 70° on the thermometer.
A. 41.0°C B. 50.0°C C. 62.5°C D. 70.0°C E. 75.0°C. Correct Answer: Option E – 75.0°C.A body weighing 10 N in air is partially immersed in water. It displaces water of mass 0.3 kg. What is the upthrust on the body? (g = 10 ms-2)
A. 13.0 N B. 7.0 N C. 3.3N D. 3.0N E. 0.3 N. Correct Answer: Option D – 3.0N
A machine has an efficiency of 60%. If the machine is required to overcome a load of 30 N with a force of 20 N. Calculate its mechanical advantage?
A. 0.7 B. 0.9 C. 1.5 D. 2.5 E. 10.0 Correct Answer: Option C – 1.5
A car travelling at a uniform speed of 120kmh−¹ passes two stations in 4 minutes. Calculate the distance between the two stations.
A. 8km B. 15km C. 22km D. 30km E. 60km Correct Answer: Option A – 8kmProducts
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