Physics, 31.12.2021 04:10 mateoperkins
a concrete brick is placed on a polished wood board which is initially laying horizontally on the floor. the static coefficient of friction is 0.63 between the board and the brick. the kinetic coefficient of friction is 0.55 between the two surfaces. we gradually raise one end of the wood board so that the board is tilted to increasingly larger angles, θ, relative to the horizontal. calculate the critical angle, θcrit at which the brick will start to slide along the wood board.
Answers: 1
Physics, 22.06.2019 07:40, bellapimienta8
Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents
Answers: 2
Physics, 22.06.2019 18:30, dbryrob2557
In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km. h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.
Answers: 2
Physics, 22.06.2019 19:00, freddhendrickss
The built in flash in a compact camera is usally capable of giving correct exsposure for distance up to how many meters?
Answers: 1
a concrete brick is placed on a polished wood board which is initially laying horizontally on the fl...
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