Physics, 18.10.2019 17:10 kellersweeney
Aroller coaster has a "hump" and a "loop" for riders to enjoy (see picture). the top of the hump has a radius of curvature of 12 m and the loop has a radius of curvature of 15 m. (a) when going over the hump, the coaster is traveling with a speed of 9.0 m/s. a 100-kg rider is traveling on the coaster. what is the normal force of the rider’s seat on the rider when he is at the peak of the hump? compare this with the normal force he would experience when the coaster is at rest. (b) what is the minimum speed the coaster must have at the top of the loop in order for the rider to remain in contact with his seat? is this speed dependent on the mass of the rider?
Answers: 2
Physics, 21.06.2019 22:30, celibe9391
What is the earliest point in the universe that we can observe? why can’t we see back further than this?
Answers: 2
Physics, 22.06.2019 07:00, Angelanova69134
Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j
Answers: 1
Physics, 22.06.2019 12:50, shollydot1379
Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass
Answers: 3
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