Explanation:
weight=mass ×acceleration
weight=25×9.8
=245
Answer:
Taurus constellation
Explanation:
Because Taurus constellation is mostly seen In the Northern Hemisphere, the bull passes through the sky from November to March, but the constellation's at its most visible in January. Taurus covers 797 square degrees.
Right ascension: 4 hours
Declination: 15 degrees
Best visible between latitudes 90 degrees and minus 65 degrees
Physical change changes the form of a chemical substance
Answer:
C
Explanation:
If a pulley system has an efficiency of 74.2%, then only that fraction of the work performed will be useful. 74.2%=0.742. 0.742*200 is about 148J. Hope this helps!
Answer:
0.231 N
Explanation:
To get from rest to angular speed of 6.37 rad/s within 9.87s, the angular acceleration of the rod must be

If the rod is rotating about a perpendicular axis at one of its end, then it's momentum inertia must be:

According to Newton 2nd law, the torque required to exert on this rod to achieve such angular acceleration is

So the force acting on the other end to generate this torque mush be:
