Suppose you want to build a house on the edge of a hill that overlooks a deep valley. what measures could you take to be sure your home will not have problems due to weathering or erosion

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.