Physics, 19.02.2020 07:25 ajaymatthew15
Two train cars with the same mass (30,000 kg) are traveling in the same direction when they collide. Train Car A has a velocity of 10 m/s and Train Car B has a velocity of 5 m/s. What is their total momentum after the collision?
Answers: 3
Physics, 21.06.2019 22:00
There is a theory that indicates that dinosaurs became extinct when about 65 million years ago, a large asteroid hit the earth surface. dust caused by this collision blocked the sunlight reaching the earth's surface and many forms of life became extinct due to the cold. fearing this threat, how large the radius of an asteroid should you be looking for if the dangerous asteroid size is approximately the same as the one that killed the dinosaurs? available data suggests that about 18% of that asteroid's mass ended up as a dust spread evenly over earth after eventually settling out of the upper atmosphere. about 0.0180 g/cm^2 of dust, which is chemically different than the earth's rock, covered the earth's surface. typical asteroids have a density of about 1.9 g/cm^3. now that we know the size of the asteroid, how much energy was released during impact, assuming all of it was just the kinetic energy of the asteroid right before the impact?
Answers: 1
Physics, 22.06.2019 04:50
Waves that cause the most damage during an earthquake are a. surface waves c. s waves b. p waves d. ocean waves
Answers: 2
Physics, 22.06.2019 12:30
As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?
Answers: 1
Physics, 23.06.2019 00:30
Which of the following statements are evidence that gases do not always behave ideally? check all that apply.? a. co2 gas becomes dry ice (solid co2) at 1 atm and –78.5 °c. b. when two gases are mixed, they follow dalton\'s law of partial pressures. c. at 4 k and 1 atm, helium is a liquid. d. it is impossible to compress a gas enough so that it takes up no volume.
Answers: 3
Two train cars with the same mass (30,000 kg) are traveling in the same direction when they collide....
Computers and Technology, 26.03.2020 01:12
Mathematics, 26.03.2020 01:12
History, 26.03.2020 01:12
Mathematics, 26.03.2020 01:12
Computers and Technology, 26.03.2020 01:12
Mathematics, 26.03.2020 01:12
History, 26.03.2020 01:12
Mathematics, 26.03.2020 01:14
Spanish, 26.03.2020 01:14
Mathematics, 26.03.2020 01:15
Mathematics, 26.03.2020 01:15
Biology, 26.03.2020 01:16
Mathematics, 26.03.2020 01:16
Chemistry, 26.03.2020 01:17