The pendulum of the Charpy impact machine has a mass of 50kg and a radius of gyration of 1.75 A k m = . If it is released from rest when 0 o  = , determine its angular velocity just before it strikes the specimen S located at 90o  = .

** urgent** the voltage across the primary winding is 350,000 v, and the voltage across the secondary winding is 17,500 v. if the secondary winding has 600 coils, how many coils are in the primary winding? a- 30 coilsb- 583 coilsc- 12,000 coilsd- 332,500 coils

If the pressure in a gas is doubled while its volume is held constant. true or false

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 3.00 ms . you then use the resistor and capacitor to make a low-pass filter. what is the crossover frequency fc?