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.a block of wood of 1.5kg mass floats on water with 68 percent of its volume submerged. a lead block is placed on the wood and the wood is the fully submerged with the lead entirely out of the water. find the mass of the lead block?
Determine the force of gravitational attraction between the earth (m = 5.98 x 10^24 kg) and a 70-kg physics student if the student is standing at sea level, a distance of 6.38 x 10^6 m from earth's center.
Solve the gold density
1. p= 19300 kg÷ 1 m³
2. p=38600kg÷ 2 m³
Solve the water density at 4°C
1. p=2000kg ÷ 2 m³
2.p=4000kg÷ 4 m³
In an isentropic process, the volume of 500g of an ideal gas (cp = 0.52kJ/kg-K, cv= 0.32kJ/kg-K) was increased from 20L to 100L. If the initial pressure of the gas was 760kPa, compute for the final temperature in oK.
A plane flies from base camp to lake A, a distance of 280 km at a direction of 20 degrees north of east. After dropping off supplies, the plane flies to lake B, which is 190km and 30 degree west of north from lake A.
The centrifugal air compressor of a gas turbine receives air
from the ambient atmosphere where the pressure is 1 bar and
the temperature is 300K. At the discharge of the compressor,
the pressure is 4 bar and the temperature is 480K and the
velocity is 100 m/s. The mass flow rate of air is 15kg/s. (a)
Determine the power required to drive the compressor and
(b) Explain why the given air exit temperature is more or less
than the reversible adiabatic compression temperature.
A thermometric thermometer reads 3.2 microvolts at the triple point of water. Determine it's reading when placed in a lecture theater of 27°c
Find the center of mass of each of the following: (a) Athin wire bent into the form of a three-sided, block-shaped "Ll"with each segment of equal length b (b) A quadrant of a uniform circular lamina of radius b (c) The area bounded by parabola y =x2/b and the line y =b (d) The volume bounded by paraboloid of revolution z = (x2 +y2)/b and the plane z = b
you strike
a tuning fork and find that the first harmonic/fundamental resonance is produced when the air column length or height or depth
at 0.166 m. If the speed of sound is 340 m/s, what is the frequency of sound wave produced by the tuning fork in Hz?
