Physics, 30.03.2020 22:18, nikitakhrabkov123
. Consider a fully extended arm that is rotating about the shoulder such that with a shoulder-to-hand length of 30 cm. If the arm is fully extended the speed of the hand uniformly increases from 1 m/s to 2.5 m/s in 3 seconds, determine the magnitude of the acceleration at the instant the speed of the hand is 2.0 m/s.
Answers: 3
Physics, 22.06.2019 01:30, ladyty2109
Kate is working on a project in her tech education class. she plans to assemble a fan motor. which form of energy does the motor convert most of its electric energy into? a. light energy b. motion energy c. sound energy d. thermal energy
Answers: 1
Physics, 23.06.2019 02:30, malakyi1
There are multiple tuning forks present in the room, and annie strikes one with a natural frequency of 400 hz. which of these other tuning forks will begin to vibrate through resonance and make the sound louder? a 200 hz tuning fork a 400 hz tuning fork a 800 hz tuning fork a 1600 hz tuning fork
Answers: 1
Physics, 23.06.2019 02:50, steves9994
You are your friend move a new refrigerator into his kitchen. you apply a horizontal force of 252 n in the negative x direction to try and move the 56 kg refrigerator. the coefficient of static friction is 0.61. (a) how much static frictional force does the floor exert on the refrigerator? give both magnitude (in n) and direction. magnitude n direction (b) what maximum force (in n) do you need to apply before the refrigerator starts to move?
Answers: 1
. Consider a fully extended arm that is rotating about the shoulder such that with a shoulder-to-han...
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