Answer:
Static friction acts on stationary objects while kinetic friction acts on those in motion. Static friction is always greater or equal to kinetic friction. This can explain why objects often take more force to get in motion than it takes to continue their motion.
The coal is urned to heat up water. this produces steam. the steam turns a turbine that turns a generator which provided energy yhat can be transferred into electrisity
Answer:
time require is 23.33 hours
Explanation:
given data
time t1 = 7 hours
time t2 = 10 hours
to find out
how long it take to fill vat if both pipe left open
solution
we consider here vat volume is v
so speed = volume / time .................1
inlet speed = v / 7 .................2
outlet speed = v / 10 ..................3
so from equation 2 and 3
net speed is = v / 7 - v / 10
net speed = 3
/70 × v
so here time is
time = v / net speed
time =
time = 70 / 3 = 23.33
so time require is 23.33 hours
Answer:
Explanation:
Initial potential energy of the given spacecraft is given as
so we have
so we have
now total work done to move it to infinite is given
W = 0 - U
Explanation :
Distance is total path travelled by an object during its entire journey. It is a scalar quantity i.e only magnitude.
Displacement is the shortest distance covered by an object. It is basically the change in position of object. It is a vector quantity i.e direction as well as magnitude.
When an object is travelling in a straight line and stops at the end point, then both distance and displacement are same.
When an object is travelling in a straight line and then changes its direction or we can say come backwards then the magnitude of distance and displacement are different.