subject
Physics, 12.01.2021 14:10 carlo123

IF the hot air in aballon
have a density equal to 3/4
minimum ballon volume is required to lift a total load of 500kg the density of air at 0°c at the atmospheric pressure is 1.29kg/m^3

ansver
Answers: 2

Another question on Physics

question
Physics, 22.06.2019 22:30
Am i correct on these two physics questions?
Answers: 2
question
Physics, 23.06.2019 02:30
Atrain is traveling at 30.0 m/s relative to the ground in still air. the frequency of the note emitted by the train whistle is 262 hz. the speed of sound in air should be taken as 344 m/s. what frequency (f approach) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and approaching it? what frequency (f recede) is heard by a passenger on a train moving at a speed of 18.0 m/s relative to the ground in a direction opposite to the first train and receding from it?
Answers: 1
question
Physics, 23.06.2019 07:30
Aspring has a relaxed length of 33 cm (0.33 m) and its spring stiffness is 6 n/m. you glue a 76 gram block (0.076 kg) to the top of the spring, and push the block down, compressing the spring so its total length is 15 cm. you make sure the block is at rest, then at time t=0 you quickly move your hand away. the block begins to move upward, because the upward force on the block by the spring is greater than the downward force on the block by the earth. calculate y vs. time for the block during a 0.09-second interval after you release the block, by applying the momentum principle in three steps each of 0.03-second duration.
Answers: 1
question
Physics, 23.06.2019 08:10
Aweather forecaster uses doppler radar to predict the track of a storm near the town of meadowlands. when the doppler signal is pointed at the storm from the town's center, the frequencies of the waves appear to be decreasing. what should the weather forecaster predict? a. that the storm will move around the edges of meadowlands without hitting the tosis center o b. that residents should be prepared, because it is impossible to know whether the storm will hit o c. that the storm is moving toward meadowlands and that residents should be prepared d. that the storm is moving away from meadowlands and is not likely to hit the town
Answers: 3
You know the right answer?
IF the hot air in aballon
have a density equal to 3/4
minimum ballon volume is required t...
Questions
question
Computers and Technology, 21.07.2019 01:10
question
Computers and Technology, 21.07.2019 01:10
question
Social Studies, 21.07.2019 01:10
Questions on the website: 13722363