Which of the following will reduce the frequency of oscillation of a simple pendulum?
A car travelling at a uniform speed of 120km/hr passes two stations in 4minutes. Calculate the distance between the two stations.
A machine has an efficiency of 60%. If the machine is required to overcome a load of 30N with a force of 20N. Calculate its mechanical advantage.
A body weighing 10N in air is partially immersed in water. It displaces water of mass 0.3kg. What is the upthrust on the body?(g = 10m/s\(^2\))
A mercury-in-glass thermometer reads -20º at the ice point and 100º at the steam point. Calculate the Celsius temperature corresponding to 70º on the thermometer.
