Give Ideas to create hearing instruments to fix hearing problem in space, as you know sound waves can’t travel through empty space. 5 to 8 ideas and please use common words so the miss doesn’t know I’m cheating <3 ty again

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error

Can anybody me with this? ? (picture included.)

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.