Answer:
C) Mass
Explanation:
The mass of an object divided by its volume equals the density.
Hope this helps!
Answer:NO
Explanation:
No the mold should not be of the same size as that of sculpture because the material from which molds is made may shrink or expand depending upon its properties .
For example grey cast iron shrinks on cooling.
We need to make mold bigger in general so that if there is a need of finishing it can be done easily without altering the size of sculpture.
A group of cells together
Answer:
![m=18000kg](https://tex.z-dn.net/?f=m%3D18000kg)
Explanation:
From the question we are told that:
Crane Length ![l=20m](https://tex.z-dn.net/?f=l%3D20m)
Crane Mass ![m_a=3000kg](https://tex.z-dn.net/?f=m_a%3D3000kg)
Arm extension at lifting end ![l_l=15m](https://tex.z-dn.net/?f=l_l%3D15m)
Arm extension at counter weight end ![l_c=5m](https://tex.z-dn.net/?f=l_c%3D5m)
Load ![M_l=5000kg](https://tex.z-dn.net/?f=M_l%3D5000kg)
Generally the equation for Torque Balance is mathematically given by
![T_1 *l_c-(m_a*g) *l_c-(T_2)*l_l=0](https://tex.z-dn.net/?f=T_1%20%2Al_c-%28m_a%2Ag%29%20%2Al_c-%28T_2%29%2Al_l%3D0)
![mg*5 *-(3000*9.8) *5-(5000*9.8)*15=0](https://tex.z-dn.net/?f=mg%2A5%20%2A-%283000%2A9.8%29%20%2A5-%285000%2A9.8%29%2A15%3D0)
![m=18000kg](https://tex.z-dn.net/?f=m%3D18000kg)