Why was the P-51 so fast?

Why was the P-51 so fast? Over the years, new features and technology were added to the P-51 to keep it updated with the times. These updates began as early as 1942 when the Mustangs were equipped with the British Merlin engine for speed. Adding the Merlin engine increased the speed of the P-51A (original […]

What is the full form of emus?

What is the full form of emus? An electric multiple unit or EMU is a multiple-unit train consisting of self-propelled carriages using electricity as the motive power. What is EMU and DMU train? Electric multiple unit (EMU) or Diesel multiple unit (DMU) refers to coaches/cars used for mostly suburban areas. These trains have multiple self […]

What can stop a muscle contraction?

What can stop a muscle contraction? Muscle contraction usually stops when signaling from the motor neuron ends, which repolarizes the sarcolemma and T-tubules, and closes the voltage-gated calcium channels in the SR. Ca++ ions are then pumped back into the SR, which causes the tropomyosin to reshield (or re-cover) the binding sites on the actin […]

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