performance task 1 questions Flashcards
What is the SI unit of Luminous Intensity?
candela
An aircraft engine developed a forward thrust of 15 kN, if the gross mass of aircraft is 100 tons and flying at the speed of 1000 kph, calculate the horse power rating of the engine?
5585 hp
What is the degree of restitution of perfectly elastic collision?
1
What is the final volume of a 0.4 L gas initially at 18 0 C at 740 mm of mercury, on which the temperature decreased to freezing point at 1 atm pressure?
A 10 kg object stay at rest at the height of 100 ft, what is the velocity at the distance 50 ft above the ground?
If a block of unknown substance is placed in a basin of water and it floats, the density of the block:
should be less than 1 g/cc
What is the change in potential energy of 10 kg mass vertically situated at 10 ft?
295 J
How much does 30 lbf weighs in moon if g=5.47 ft/s^2 in moon and g= 32.2 ft/s^2 on earth?
5.1 lbf
How much work can an electric bulb do if it uses 25 watts for 0.0833 hours?
7.5kj
A net force of 100 N is applied to a 5 kg mass that is initially at rest. After 10 seconds, the body would have traveled a distance of ?
1000m
You are designing an electronic circuit element made of 23 mg of silicon. The electric current through it adds energy at the rate of 7.4 mW. If your design doesn’t allow any heat transfer out of the element, at what rate does its temperature increase? The specific heat of silicon is 705 J/kg•K.
What is the momentum posses by a 40 lbm projectile at the speed of 420 mph?
The permissible number of electron in K shell is
2
How many moles does a 56 g of CO2 have?
1
A substance that have the same molecular mass but different molecular structure?
isomer
