HNC Engineering - General Knowledge #1

Newton determined that Force = mass x acceleration. Which law is this?

• Newtons First Law

• Newtons Second Law

• Newtons Third Law

• Newtons Fourth Law

Which of the following has the lowest density?

• Blood

• Aluminium

• Mayonnaise

• Ice water

if 2a+3b=12 and if 5b=13-a, what is a/b equal to?

• 2.5

• 1

• 3

• 1.5

In a built in (Encastre) beam with a single point load at the midpoint, describe the slope at either end?

• The slope will be the same at both ends

• There is no slope

• The slope will be different at both ends

• I don't even know what Encastre means!

Which of these SUVAT equations is correct?

• v² = u² - 2as

• s = (u + v)t

• s = vt + ¹/₂at²

• v = (u² + 2as)^0.5

Which of these is closest to the speed of sound in 20degC air?

• 300 m/s

• 767 mph

• 1500 km/h

• 12 km/s

A 3D object of mass 2kg and dimensions 100cm x 100cm x 10cm is suspended under liquid of density 1000kg/m³ by a rope tethered to the ground. What is the tension in the rope? Take gravity to be 10m/s²

• 80

• 100

• 1,000,000

• 120

In Engineering, why are logs most useful?

• They float on water

• They allow us to calculate unknown indices

• We can use them as fuel for fires

• They make maths a lot harder

How many seconds are there in an average year?

• 30758400

• 86400

• 31556952

• 22118400

In which material does sound travel the fastest?

• Diamond

• Water

• Iron

• Air