A student sits on a rotating stool holding two
2 kg objects. When his arms are extended
...
Physics, 01.03.2021 07:30 robert7248
A student sits on a rotating stool holding two
2 kg objects. When his arms are extended
horizontally, the objects are 1 m from the axis
of rotation, and he rotates with angular speed
of 0.61 rad/sec. The moment of inertia of the
student plus the stool is 6 kg m2
and is assumed to be constant. The student then pulls
the objects horizontally to a radius 0.27 m
from the rotation axis.
Calculate the final angular speed of the
student.
Answer in units of rad/s.
part 2
Calculate the change in kinetic energy of the
system.
Answer in units of J.
Answers: 2
Physics, 21.06.2019 17:00
If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction
Answers: 1
Physics, 21.06.2019 22:30
According to the tide table below what time of day will the highest tide occur?
Answers: 1
Physics, 22.06.2019 02:50
Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.
Answers: 3
Physics, 22.06.2019 03:30
Aplane flies a distance d from west to east at a constant speed vp , with respect to the air in a time twe . on the return trip, the plane flies a distance d from east to west at a constant speed vp , with respect to the air in a time tew . on both trips the wind blows from west to east at a constant speed va , with respect to the ground 1) what is tew in terms of vp, va, and d, as needed? tew=dvp tew=dvp+va tew=dva tew=dvpâ’va tew=12dvp tew=12dvp+va tew=12dvpâ’va your submissions: b submitted: saturday, january 26 at 6: 49 pm feedback: feedback will be given once all questions have been attempted and the grade cluster button has been pressed. 2) what is twe in terms of vp, va, and d, as needed? twe=dvp twe=dvp+va twe=dva twe=dvpâ’va twe=12dvp twe=12dvp+va twe=12dvpâ’va your submissions: d submitted: saturday, january 26 at 6: 49 pm feedback: feedback will be given once all questions have been attempted and the grade cluster button has been pressed. 3) assuming d = 2300 miles, vp = 400 miles/hr, and twe = 4 hours, what is va, the speed of the wind with respect to the ground? va = 100 miles/hr va = 575 miles/hr va = 200 miles/hr va = 175 miles/hr va = 975 miles/hr 4) once again, assuming d = 2300 miles, vp = 400 miles/hr, and twe = 4 hours, what is tew, the time it takes the plane to fly a distance d miles from east to west? tew = 5.75 hours tew = 11.5 hours tew = 7.67 hours tew = 8 hours tew = 10.2 hours
Answers: 2
Mathematics, 03.12.2021 02:40
Mathematics, 03.12.2021 02:40
Mathematics, 03.12.2021 02:40
Mathematics, 03.12.2021 02:40
Chemistry, 03.12.2021 02:40
Mathematics, 03.12.2021 02:40
Chemistry, 03.12.2021 02:40
Biology, 03.12.2021 02:40
Mathematics, 03.12.2021 02:40