Answer: After serving as Second Lady from 1981 to 1989, Barbara Pierce Bush served as First Lady of the United States when her husband George H. W. Bush won the Presidency. She is also the mother of the 43rd President, George W. Bush, and of Florida's 43rd Governor, Jeb Bush.
Explanation:
Answer:
(a)
(b)
(c) Impossibly
Explanation:
Given:
- temperature of source reservoir,
- temperature of sink reservoir,
- heat absorbed by the engine,
- heat rejected by the engine,
(a)
Now the maximum theoretical efficiency of the engine:
(b)
Actual efficiency of the heat engine:
(c)
This is impossible because the actual efficiency can never be greater than the ideal (Carnot) efficiency of a heat engine.
Answer:
Please find the answer in the explanation.
Explanation:
Balancing the forces acting on a body is not enough to establish equlibrium because of the principle of moment say that:
1.) For equilibrium to be attained, the sum of clockwise moment must be equal to the sum of anticlockwise moments.
2.) The sum of upward forces must be equal to the sum of the downward forces
According to the definition of moment, is the product of force and perpendicular distance.
Therefore, the perpendicular distance is needed to be considered.
Answer:
Explanation:
Same numbers of protons but different number of neutron so i would go for A same atomic number different number of neutrons
Explanation:
A bearing if an angle is measured clockwise from north direction.
e.g Below the bearing of B from A is 025. (3 figures are always given). the bearing of A from B is 205°.