A gas-turbine power plant operates on the simple Brayton cycle between the pressure limits of 100 and 1600 kPa. The working fluid is air, which enters the compressor at 40°C at a rate of 1100 m3/min and leaves the turbine at 650°C. Assume a compressor isentropic efficiency of 85 percent and a turbine isentropic efficiency of 88 percent. Use constant specific heats with cv = 0.821 kJ/ kg·K, cp = 1.108 kJ/kg·K, and k = 1.35.

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

false.

explanation:

this statement is false. after falling for 5 seconds, its speed will not be 100 m/s.