Physics, 06.02.2020 01:48 kloeydrea08
Aphysics teacher performing an outdoor demonstration suddenly falls from rest off a high cliff and simultaneously shouts "." when she has fallen for 3.0 s, she hears the echo of her shout from the valley floor below. the speed of sound is 340 m/s. (a) how tall is the cliff? (b) if we ignore air resistance, how fast will she be moving just before she hits the ground? (her actual speed will be less than this, due to air resistance.)
Answers: 3
Physics, 22.06.2019 01:00
Asuppose a suitcase has a mass of (m) 30 kg and a net force (n) of 10 kg*m/s. what is the acceleration rate of the suitcasein m/s? show your work to support your answer.
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Physics, 22.06.2019 04:50
The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.
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Physics, 23.06.2019 05:00
Which of the following is a transformer used for? alternate a voltage produce a voltage increase or decrease a voltage eliminate a voltage
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Aphysics teacher performing an outdoor demonstration suddenly falls from rest off a high cliff and s...
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