What do simple machines accomplish?
•simple machines reduce the total amount of work.
•...
Physics, 06.11.2019 22:31 herringalyssa
What do simple machines accomplish?
•simple machines reduce the total amount of work.
•simple machines keep the total amount of work the same, but make work easier.
•simple machines increase the total amount of work.
•simple machines keep the total amount of work the same, but make work more
difficult.
Answers: 3
Physics, 21.06.2019 17:10
Aspecial electronic sensor is embedded in the seat of a car that takes riders around a circular loop-the-loop ride at an amusement park. the sensor measures the magnitude of the normal force that the seat exerts on a rider. the loop-the-loop ride is in the vertical plane and its radius is 23 m. sitting on the seat before the ride starts, a rider is level and stationary, and the electronic sensor reads 740 n. at the top of the loop, the rider is upside down and moving, and the sensor reads 370 n. what is the speed of the rider at the top of the loop?
Answers: 1
Physics, 21.06.2019 22:00
Aroll in a paper machine is powered by a separately excited dc machine. operating point 1 (under load): the roll typically operates at 764 rpm and must provide 301 nm of torque to oppose the load of the paper. the armature voltage is 230v for this operating point operating point 2 (no load): when the load is removed the speed of the roll increases to 900 rpm (the field characteristics are unchanged) la ea dev m (a) calculate the maximum torque (units of nm) that the motor can supply with this applied voltage (b) calculate the value of the armature resistance, ra (in ohms) (c) at operating point 1 (loaded condition), the field current, i, and the total input power (armature field), are measured to be to be 10 a and 28,600 w respectively. use this information to calculate the value of the field resistance, rf (in ohms). (d) (d) at operating point 1 (loaded condition), calculate the motor efficiency. express your answer as a percent to at least 2 significant digits. (d) if the field voltage is reduced by 1/2, calculate the new stall torque (in nm) of the motor (f). if the field voltage is reduced by 1/2, calculate the new no-load speed (in rad/sec)
Answers: 1
Physics, 22.06.2019 00:00
Name three different units of energy used to measure heat and describe what type of situations each is usually used.
Answers: 1
Physics, 22.06.2019 12:00
You have a resistor and a capacitor of unknown values. first, you charge the capacitor and discharge it through the resistor. by monitoring the capacitor voltage on an oscilloscope, you see that the voltage decays to half its initial value in 2.70 miss . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?
Answers: 2
Mathematics, 06.12.2021 14:00
Biology, 06.12.2021 14:00
History, 06.12.2021 14:00
History, 06.12.2021 14:00
Mathematics, 06.12.2021 14:00
Mathematics, 06.12.2021 14:00
English, 06.12.2021 14:00
History, 06.12.2021 14:00
Mathematics, 06.12.2021 14:00
History, 06.12.2021 14:00
Business, 06.12.2021 14:00
Mathematics, 06.12.2021 14:00