Answer:
1) A = 0.25 m², 2) V = 0.5 m³, 3) m = 1500 kg, 4) W = 14700 N,
5) P = 58800 Pa
Explanation:
1) The area of the base is square
A = L²
A = 0.5²
A = 0.25 m²
2) The block is a parallelepiped
V = A h
V = 0.25 2
V = 0.5 m³
3) Density is defined
rho = m / V
m = rho V
m = 3000 0.5
m = 1500 kg
4) The weight of a body is
W = mg
W = 1500 9.8
W = 14700 N
5) The pressure is
P = F / A
in this case the force is equal to the weight of the body
P = 14700 / 0.25
P = 58800 Pa
Metallic bonds can occur between different elements to form alloy. In contrast to electrons that participate in both ionic and covalent bonds electrons are that participate in metallic bonds delocalize forming a sea of electrons around the positive nuclei of metals.
Answer:
2m/s
Explanation:
Total Distance = 300m+200m = 500m
Total Time = 100s+150s = 250s
Average Speed = Total distance travelled/Total time taken
=500m/250s
=2m/s
Answer:
The First Law of Thermodynamics relates internal energy or thermal energy, heat and work. There are some important things to consider. The first law will not tell you the amount of internal or thermal energy, but only how much it has changed. Heat is not temperature. Heat is the flow of energy from hot to cold objects. If heat flows into a system, we consider it positive. If heat flows out of a system, we consider it negative. Work can be done on or by the gas. If the volume increases, the gas is doing the work and we consider this negative. If work is done on the gas, the volume decreases and we consider this positive.
Answer:
0.0872
Explanation:
the solution to the problem can be found in the attachment section. Please go through and feel free to ask your doubts.