subject
Physics, 23.09.2019 20:30 dailanniiii

Asoccer ball is released from rest at the top of a grassy incline. after 4.4 seconds, the ball travels 92 meters and 1.0 s after this, the ball reaches the bottom of the incline. what was the magnitude of the ball's acceleration, assume it to be constant? express your answer using two significant figures. a = nothing m/s2 request answer part b how long was the incline? express your answer using two significant figures. l = nothing m

ansver
Answers: 1

Another question on Physics

question
Physics, 22.06.2019 08:00
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
Answers: 2
question
Physics, 22.06.2019 11:20
The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)
Answers: 3
question
Physics, 22.06.2019 12:30
An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.
Answers: 2
question
Physics, 22.06.2019 14:00
If element x has 99 protons how many electrons does it have
Answers: 1
You know the right answer?
Asoccer ball is released from rest at the top of a grassy incline. after 4.4 seconds, the ball trave...
Questions
question
Chemistry, 20.05.2021 05:40
question
Mathematics, 20.05.2021 05:40
question
English, 20.05.2021 05:40
Questions on the website: 13722360