A work crew is using a pulley to lift a small piano up the outside of a building to a second-floor balcony. The piano has mass 180 kg. At a height of 3.0 m, what is the piano’s gravitational potential energy with respect to the ground? A. 9.8 J B. 180 J C. 540 J D. 5,300 J
Answers: 2
Physics, 21.06.2019 15:40
Rosa records the distance that a toy car rolls and the time it takes to cover the distance. what scientific practice is this? collecting data asking a question providing explanations communicating results
Answers: 3
Physics, 21.06.2019 21:40
Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?
Answers: 3
Physics, 22.06.2019 06:40
Determine the change in width a, height b, thickness t when a plate is subjected to the uniform distributed load and is made of material having modulus of elasticity e=230 gpa and poisson's ratio ν=1/3. given : a=400 mm and b= 300 mm also the uniformly distributed load in downward y direction of plate is 2 mn/m and in the positive x direction is 3 mn/m and t=20 mm
Answers: 1
A work crew is using a pulley to lift a small piano up the outside of a building to a second-floor b...
Mathematics, 17.02.2021 20:30
Chemistry, 17.02.2021 20:30
Mathematics, 17.02.2021 20:30
Mathematics, 17.02.2021 20:30
Mathematics, 17.02.2021 20:30
History, 17.02.2021 20:30
Mathematics, 17.02.2021 20:30
English, 17.02.2021 20:30
English, 17.02.2021 20:30
Biology, 17.02.2021 20:30
Mathematics, 17.02.2021 20:30