What focal length is needed for objective lens
A grade school student plans to build a 38-power telescope as a science fair project. She starts with a magnifying glass with a focal length of 5.5cm as the eyepiece. What focal length is needed for her objective lens?
Expected delivery within 24 Hours
Determine 1) the energy flow rate of the oil at the inlet; 2) the difference of energy flow rate between the outlet and inlet; 3) the overall efficiency of the motor-pump system?
What is the displacement current if the voltage is increased at a known rate? At what t will the leaking current equal the displacement current?
A power plant burns gas with HHV of 55,000 KJ/KG to generate electricity of 10 MW. If the overall efficiency is 40%, how much natural gas needs to be burned every day?
Determine the minimum bolt diameter required to support an applied load of P = 155 kN if a minimum factor of safety of 2.0 is required with respect to both bolt shear and plate bearing failure.
A solid cube of wood having dimensions of 0.5 m3 is floating in water with 0.3 m of its dimension above the surface. What is the specific weight of the wooden cube?
A steam power plant operates on the ideal reheat Rankine cycle. Steam enters the high-pressure turbine at 8 MPa and 500 oC and leaves at 3 MPa. Steam is then reheated at constant pressure to 500 oC before it expands to 20 kPa in the low-pressure t
A 200-W vacuum cleaner is powered by an electric motor whose efficiency is 80%. (Note that the electric motor delivers 200 W of net mechanical power to the fan of the cleaners).
Derive an expression for the compressibility of air, represented by Tau, for 1: and Isothermal Process and 2: for an isentropic process.
1950806
Questions Asked
3,689
Active Tutors
1455674
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
A person using methamphetamine reports that activities they once enjoyed no longer feel rewarding and they now need increasing amounts of the drug to feel "nor
Which brain region, still maturing during adolescence, is responsible for assessing situations, making sound decisions, and controlling emotions and desires?
In quantitative research, explicit and implicit self-esteem do not always align, but self-esteem is more than just the gap between them.
Question: What behavior can sometimes be linked to people who lie on social media?
In the 1960s and 70s the Carlsberg Brewery in Copenhagen, Denmark had a policy that their employees could drink beer during breaks and take as much beer home
Ann has been coming to see you for three months. She was fired from her job a month ago and is struggling to make ends meet.
When a client appears to be misinterpreting intelligence or aptitude assessment results, it is important to address both the emotional impact and the accuracy