Two air carts of mass m 1 = 0.84 kg and m 2 = 0.42 kg are placed on a frictionless track Cart 1 is at rest initially, and has a spring bumper with a force constant of 690 N/M cart 2 has a flat metal surface for a bumper and moves toward the bumper of the stationary cart with an initial speed v = 0.68 m/s. (a) What is the speed of the two carts at the moment when their speeds are equal? (b) How much energy is stored in the spring bumper when the carts have the same speed? (c) What is the final speed of the carts after the collision?
Two air carts of mass m 1 = 0.84 kg and m 2 = 0.42 kg are placed on a frictionless track Cart 1 is at rest initially, and has a spring bumper with a force constant of 690 N/M cart 2 has a flat metal surface for a bumper and moves toward the bumper of the stationary cart with an initial speed v = 0.68 m/s. (a) What is the speed of the two carts at the moment when their speeds are equal? (b) How much energy is stored in the spring bumper when the carts have the same speed? (c) What is the final speed of the carts after the collision?
Two air carts of mass m1 = 0.84 kg and m2 = 0.42 kg are placed on a frictionless track Cart 1 is at rest initially, and has a spring bumper with a force constant of 690 N/M cart 2 has a flat metal surface for a bumper and moves toward the bumper of the stationary cart with an initial speed v = 0.68 m/s. (a) What is the speed of the two carts at the moment when their speeds are equal? (b) How much energy is stored in the spring bumper when the carts have the same speed? (c) What is the final speed of the carts after the collision?
question about how the author got the equation in the red box from, as it makes no sense
No Chatgpt please will upvote h
Helicobacter pylori (H. pylori) is a helically-shaped bacterium that is usually found in the stomach. It burrows through the gastric mucous
lining to establish an infection in the stomach's epithelial cells (see photo). Approximately 90% of the people infected with H. pylori will
never experience symptoms. Others may develop peptic ulcers and show symptoms of chronic gastritis. The method of motility of H.
pylori is a prokaryotic flagellum attached to the back of the bacterium that rigidly rotates like a propeller on a ship. The flagellum is
composed of proteins and is approximately 40.0 nm in diameter and can reach rotation speeds as high as 1.50 x 103 rpm. If the speed
of the bacterium is 10.0 μm/s, how far has it moved in the time it takes the flagellum to rotate through an angular displacement of 5.00
* 10² rad?
Zina Deretsky, National Science
Foundation/Flickr
H. PYLORI CROSSING MUCUS LAYER OF STOMACH
H.pylori Gastric Epithelial
mucin cells
gel
Number
i
318
Units
um
H.pylori…
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