Answers: 2
Physics, 22.06.2019 02:10
How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by
Answers: 2
Physics, 22.06.2019 04:30
Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?
Answers: 1
Physics, 22.06.2019 18:00
The protons in a nucleus are approximately 2 ✕ 10^−15 m apart. consider the case where the protons are a distance d = 1.93 ✕ 10^−15 m apart. calculate the magnitude of the electric force (in n) between two protons at this distance.
Answers: 1
Physics, 22.06.2019 21:40
Ahair dryer is basically a duct in which a few layers of electric resistors are placed. a small fan pulls the air in and forces it through the resistors where it is heated. air enters a 1200 w hair dryer at 100 kpa and 22°c and leaves at 47°c. the cross-sectional area of the hair dryer at the exit is 60 cm2. neglecting the power consumed by the fan and the heat losses through the walls of the hair dryer, determine (a) the volume flow rate of air at the inlet and (b) the velocity of the air at the exit.
Answers: 1
Adriana, Oscar, and Soledad are enjoying a day at the beach. They are body surfing and
playing on t...
Mathematics, 23.12.2020 08:00
Biology, 23.12.2020 08:00
Mathematics, 23.12.2020 08:00
Mathematics, 23.12.2020 08:00
Mathematics, 23.12.2020 08:00
History, 23.12.2020 08:00
Biology, 23.12.2020 08:00
Mathematics, 23.12.2020 08:00
Spanish, 23.12.2020 08:00
Mathematics, 23.12.2020 08:00
Mathematics, 23.12.2020 08:00
Mathematics, 23.12.2020 08:00
Arts, 23.12.2020 08:00