Physics, 30.06.2019 03:30 brittneyzenger001
Nora tied a string around a tennis ball, and then she swung it in a circle in front of her to demonstrate a planet orbiting the sun. she explained that her hand represented the sun, the ball represented a planet, and the string kept the ball from leaving the "orbit" around her hand. why doesn't the string work in the same way as gravity? a. the string holding the ball in orbit is a contact force; gravity is a noncontact force. b. the string only pulls one way; gravity pulls both ways. c. the string keeps the distance between the bodies the same; gravity makes the distance vary. d. there is no difference between the two systems.
Answers: 2
Physics, 21.06.2019 18:00, mya1318
Amanometer is used to measure the air pressure in a tank. the fluid used has a specific gravity of 1.25, and the differential height between the two arms of the manometer is 34 in. if the local atmospheric pressure is 12.7 psia, determine the absolute pressure in the tank for the cases of the
Answers: 3
Physics, 22.06.2019 14:10, chuchi24
The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).
Answers: 3
Nora tied a string around a tennis ball, and then she swung it in a circle in front of her to demons...
Mathematics, 01.11.2019 06:31
Mathematics, 01.11.2019 06:31
Mathematics, 01.11.2019 06:31