Physics, 29.02.2020 01:27, steven2996
Diego is trying to lift a piano to the second floor of his house. Diego uses a pulley system and gives a big lift to the piano. The piano moves upward, then stops, and then it starts to fall to the ground.
Which list best describes the forces on the piano in the proper order?
A. positive force → balanced force → negative force
B. negative force → balanced force → positive force
C. positive force → unbalanced force → negative force
D. negative force → unbalanced force → positive force
Answers: 2
Physics, 21.06.2019 18:30, aaliyahmaile13
What is the conversion factor between kg/m^3 and g/m^3. express your experimental values for the densities in kg/m^3.
Answers: 1
Physics, 22.06.2019 07:20, Nadi4753
Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?
Answers: 3
Physics, 22.06.2019 11:00, Arielledt10
1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?
Answers: 1
Diego is trying to lift a piano to the second floor of his house. Diego uses a pulley system and giv...
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