Traditional Culture Encyclopedia - Photography major - As the picture shows, it was taken with a high-speed camera.
As the picture shows, it was taken with a high-speed camera.
The actual length of the bullet is 2.0 cm. ..
According to the ratio of neutron bomb to Parker card in the photo, the width of Parker card is about 6cm.
So the time for the bullet to pass through Parker brand is t = XV = 0.02+0.06900 = 8.9×10-5s.
So the answer is: 8.9× 10-5.
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