accurate answers
_____ does not contain any neutrons in its nucleus. Ans✓✓✓ Hydrogen
_____ increases the toughness and ductility of steel when added to it.
Ans✓✓✓ Vanadium
_____ is a material's ability to be greatly lengthened and reduced in
cross-sectional area without breaking. Ans✓✓✓ Ductility
150°F is equivalent to: Ans✓✓✓ 65.6°C
82 degrees on the Fahrenheit scale is equal to _____ K on the Kelvin
scale: Ans✓✓✓ 300.5
A 1 kg pipe wrench is dropped from a height of 25 m. In km/h, its
velocity at impact will be: Ans✓✓✓ 79.7 km/h
A 6 m long cantilever beam carries a concentrated load of 45 kN at its
free end. What is the shear force at the wall? Ans✓✓✓ 45 kN
A beam 34 m long overhangs as shown. It carries a distributed load of
100 kN/m and a concentrated load of 400 kN as shown. Calculate the
reactions at the supports. https://ibb.co/yPcHt9x Ans✓✓✓ R1 =
1173.33 kN, R2 = 426.67 kN
,A beam is simply supported at both ends and carries a concentrated load
of 1000 N in the middle. The types of stress that are set up in the beam
are: Ans✓✓✓ Shear stress and bending stress
A body can be put into equilibrium by applying an additional force equal
in magnitude but opposite in direction to the: Ans✓✓✓ Resultant
A Cupola furnace is used to produce cast iron by: Ans✓✓✓ Melting pig
iron together with predetermined amounts of scrap iron, steel and
limestone.
A cylindrical tank has its axis vertical. It is 2 m in diameter and its mass
is 800 kg. When it is filled to 2 m high with oil, the total mass is 5050
kg. What is the relative density of the oil? Ans✓✓✓ 0.6764
A diagram that shows the stress caused by forces acting perpendicular to
the beam at every cross section along the length of a beam is called the
_____ diagram. Ans✓✓✓ Shear
A load exerted upon rivets will produce ________ stress in the rivets:
Ans✓✓✓ Shear
A man walks 3.2 km due east and then 4 km in a direction 20° west of
south. Find the distance between his final position and his starting point.
Ans✓✓✓ 4.18 km
, A mass of 50 kg is suspended as shown. Find the force in the suspension
cord P in Newtons. https://ibb.co/yPw7gqc Ans✓✓✓ 598.8 N
A mass of 50 kg is suspended as shown. Find the magnitude of force F
required to keep the load in equilibrium. https://ibb.co/yPw7gqc
Ans✓✓✓ 343.35 N
A material with a high Brinell number is: Ans✓✓✓ Very hard
A neutron has: Ans✓✓✓ No electrical charge
A number taken to the third power is said to be??: Ans✓✓✓ Cubed.
A perfect gas is compressed under conditions of constant temperature to
a volume of 30 m³. If the final pressure of the gas is 450 kPa gauge and
the initial volume was 135 m³, what was the initial pressure? (Assume
atmospheric pressure to be 101.3 kPa) Ans✓✓✓ 21.2 kPa gauge
A perfectly elastic material: Ans✓✓✓ Shows no sign of strain due to
loading when the load is removed
A piece of copper absorbs 50 kJ of heat while its temperature rises from
20°C to 70°C. Calculate the mass of the copper. Ans✓✓✓ 2.58 kg