Physics, 22.02.2020 00:44 ezequiel2k
Dwayne ‘The Rock’ Johnson needs to escape from the fourth floor of a burning building (in a movie). He ties a rope around his waist and ties the other end to a 63 kg desk. Then he climbs out of a window and begins to lower himself down. The rope becomes taut when he lets go of the window sill. Then the desk begins to slide on the floor and he starts to accelerate downwards (starting from rest). Dwayne has a mass of 118 kg. The smooth window sill acts as a frictionless pulley. The desk is 10 m from the window. The kinetic friction of the desk sliding on the floor is 370 N. How fast is he travelling when the desk reaches the window? (Hint: Unbeknownst to the audience, The Rock aced Physics 1200 and knows that the tension in the rope is not 370 N).
Answers: 2
Physics, 21.06.2019 18:00
Stars x and y are both bluish main sequence stars. star x has a higher absolute brightness than star y. how do the two stars compare? explain
Answers: 1
Physics, 21.06.2019 22:30
Acricket ball of 70g moving with a velocity of 0.5 m/s is stopped by a player in 0.5s what is the force applied to stop the ball
Answers: 1
Physics, 22.06.2019 03:00
If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?
Answers: 2
Physics, 22.06.2019 05:30
Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.
Answers: 1
Dwayne ‘The Rock’ Johnson needs to escape from the fourth floor of a burning building (in a movie)....
History, 30.11.2020 22:50
Mathematics, 30.11.2020 22:50
Mathematics, 30.11.2020 22:50
Geography, 30.11.2020 22:50
Mathematics, 30.11.2020 22:50