Physics, 21.09.2019 01:30 catherinesquitieri
Two trains face each other on adjacent tracks. they are initially at rest, and their front ends are 50 m apart. the train on the left accelerates rightward at 1.15 m/s2. the train on the right accelerates leftward at 1.15 m/s2. (a) how far does the train on the left travel before the front ends of the trains pass? 25 m (b) if the trains are each 150 m in length, how long after the start are they completely past one another, assuming their accelerations are constant?
Answers: 3
Physics, 21.06.2019 23:30
Which lists the main components of darwin’s theory of evolution? a. random mutations drive evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms do not change. b. natural selection drives evolution; the evolution of a population happens slowly; organisms have common ancestors; organisms change over time. c. natural selection drives evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms change over time. d. random mutations drive evolution; the evolution of a population happens rapidly; organisms have common ancestors; organisms do not change.
Answers: 1
Physics, 22.06.2019 11:30
Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)
Answers: 3
Physics, 22.06.2019 15:00
A10 kg box initially at rest is pulled 18 meters across a horizontal, frictionless surface by a 40 n force. what is the block’s final velocity over the 18 meters?
Answers: 2
Physics, 22.06.2019 17:30
Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=
Answers: 2
Two trains face each other on adjacent tracks. they are initially at rest, and their front ends are...
History, 05.05.2020 09:08
Social Studies, 05.05.2020 09:08
Mathematics, 05.05.2020 09:08
Chemistry, 05.05.2020 09:08
Mathematics, 05.05.2020 09:08
Mathematics, 05.05.2020 09:08
Mathematics, 05.05.2020 09:08