2. A 5 kg block moves with a constant speed of 10m/s to the right on a smooth surface where frictional forces are
considered to be negligible. It passes through a 2.0 m rough section of the surface where friction is not negligible,
and the coefficient of kinetic friction between the block and the rough section 4, is 0.2. What is the change in the
kinetic energy of the block as it passes through the rough section?
A. 20 J of energy is removed from the block.
C. 250 J of energy is removed from the block.
B. 20 J of energy is added to the block.
D. 250 J of energy is added to the block.
Answers: 2
Another question on Physics
Physics, 21.06.2019 17:10
An air-standard stirling cycle operates with a maximum pressure of 600 psia and a minimum pressure of 10 psia. the maximum volume of the air is 10 times the minimum volume. the temperature during the heat rejection process is 100°f. calculate the specific heat added to and rejected by this cycle, as well as the net specific work produced by the cycle. use constant specific heats at room temperature. the properties of air at room temperature are r
Answers: 2
Physics, 21.06.2019 22:30
Abug is 12 cm from the center of a turntable that is rotating with a frequency of 45 rev/min . what minimum coefficient friction is required so that the bug stays on the turntable?
Answers: 1
Physics, 22.06.2019 18:30
Two trains leave a station at the same time, train a travels at a constant speed of 16 m/s. train b starts at 8.0 m/s but accelerates constantly at 1.0 m/s squared. after 10.0 seconds, which train has the greater speed?
Answers: 1
You know the right answer?
2. A 5 kg block moves with a constant speed of 10m/s to the right on a smooth surface where friction...
Questions
Biology, 22.09.2019 18:50
Mathematics, 22.09.2019 18:50
History, 22.09.2019 18:50
Mathematics, 22.09.2019 18:50
Chemistry, 22.09.2019 18:50
Biology, 22.09.2019 18:50
English, 22.09.2019 18:50
History, 22.09.2019 18:50
Social Studies, 22.09.2019 18:50
Mathematics, 22.09.2019 18:50
