Answer:
meters
Explanation:
See the remaining part of required information in the attached image
Solution
The formula for calculating velocity is equal to
Where v is the velocity, 
are time range for two acceleration vectors and angle between two acceleration vector respectively and r is the radius of the circle
Putting the give values in above equation we get
Acceleration is equal to
Radius is equal to
Putting the given values we get -
Answer:
Temporary magnets are made from soft metals,
Explanation:
they only retain their magnetism while near a permanent magnetic field or electronic current. Common temporary magnets include nails and paperclips, which can be picked up or moved by a strong magnet.
Answer:
Work done is 882000joule.
power is 29400watt.
Explanation:
given,
Mass(m)=500kg
Acceleration due to gravity(g)=9.8m/s²
Height(h)=6m
Time taken(t)=30s
Workdone=?
Power=?
now,
workdone=force*displaxement
= m*g*h
=500*9.8*6
=8,82,000joule
so, the work done by the man is 8,82,000joule.
then,
power=workdone/time taken
=8,82,000/30
=29,400watt
so, the required power to lift a load is 29,400watt.
