<span>Work equals
force times distance. When you move an object, you are exerting a force onto
it. By exerting a force on the object, you are actually displacing it from its
initial position. You cannot apply force to the object without altering its
position. Keep in mind that when you exert work, you are exerting energy too. So
the work must have a unit in joules in SI units. Force is in newtons or
kilogram meter per second squared. And distance is in meters. So you will have
newton-meter or joules. </span>
An object in a classroom that has a fixed point can be a pencil
24 hours x (60 mins/1hr) = 1440 mins
(10 kilometres/ min) x 1440 mins=14400 kilometres
Answer:
change in length is 3.397 cm
Explanation:
Given data
long = 91 m = 9100 cm
coefficient for concrete (a) = 1.2 × 10−5 ( ◦C)−1
temperature = 56 F = (56× 5/9) ◦C
to find out
how much spacing is needed to allow
solution
we know allow space is given by this formula
change in length = coefficient for concrete × given length × temperature .............1
put all value in equation 1
change in length = 1.2 × 10−5 × 9100 × (56× 5/9)
change in length = 3.397 cm
so change in length is 3.397 cm