2. a 75.0 kg astronaut is training for accelerations that he will experience upon reentry. he is placed in a centrifuge (r = 10.0 m) and spun at a constant angular velocity of 15.3 rpm. answer the following: a. what is the angular velocity of the centrifuge in rad/s? b. what is the linear velocity of the astronaut at the outer edge of the centrifuge? c. what is the centripetal acceleration of the astronaut at the end of the centrifuge? d. how many g’s does the astronaut experience? e. what is the centripetal force and net torque experienced by the astronaut? give magnitudes and directions.

While studying chemical reactions and conservation of matter, sarah's class conducted a variety of experiments. sarah and her lab partner found the mass of a wax candle and placed the candle in a flask. the students lit the candle and let it burn to completion. all that was left was wax and charred candle wick. per their teacher's instructions, the students found the mass of the products. their data can be seen in the data table. formulate a hypothesis the students could test to explain why the experiment did not support the law of conservation of matter. a) the students could repeat the experiment using different candles; there might have been a flaw in the candle. b) the experiment should be repeatable. the students should run several trials and then take an average of the after mass in each trial. c) the students should have someone in the class check their measurement skills as they repeat the experiment. they may have made an error using the balance. d) the students should burn the candle in a container that has some type of lid so that any gas that is a product of the reaction can be contained and massed. submit

What determines the amount of inertia an object has

Assume you measured the mass of the cart to be (500 ± 1) g and the mass of the additional mass you put on the cart to be (500 ± 1) g as well. since the scale you are using in the lab cannot measure objects heavier than 600g you will have to sum up individual pieces and propagate the error. so what would be the mass and the standard error of the cart and the mass