Answer:
area is 2d volume is 3d
Explanation:
Area refers to the size of two-dimensional surface. Volume refers to the size of a three-dimensional space.
Answer:
16.5 kwh and 59400 kJ.
Explanation:
kWh is a measure of energy that is equivalent to the power in kw times the number of hours the device worked.
In this case, it would be equal to:
![E_{kwh}=5.5kw*3h=16.5kwh](https://tex.z-dn.net/?f=E_%7Bkwh%7D%3D5.5kw%2A3h%3D16.5kwh)
1 kw also means 1kj of energy spent per second. With this, we calculate the amount of energy in kJ spent by the resistance:
![E_{kJ}=5.5\frac{kJ}{s}*3h*\frac{3600s}{1h} = 59400 kJ](https://tex.z-dn.net/?f=E_%7BkJ%7D%3D5.5%5Cfrac%7BkJ%7D%7Bs%7D%2A3h%2A%5Cfrac%7B3600s%7D%7B1h%7D%20%3D%2059400%20kJ)
The third choice is correct
Answer:
4.62 N-s
Explanation:
recall that the formula for impulse is given by
Impulse = Force x change in time
in our case, we are given
Force = 14 N
change in time = 0.33s
Simply substituting the above into the equation for impulse, we get
Impulse = Force x change in time
Impulse = 14 x 0.33
= 4.62 N-s