Answer:
5.71 x 10^13 C.
Explanation:
We are given the following parameters or data or information and these data are going to help us in solving this particular Question or problem effectively and efficiently;
=> mass of Earth = 5.98 × 10^ 24kg, mass of Moon = 7.35 × 10^22 kg and the radius of orbit = 3.84 × 10^8m.
Recall that H =( G × m1 × m2) / r^2. where m1 and m2 are the masses of the two bodies amd r is the radius.
We will be making use of the formula below:
the value of Q to maintain the present orbit = √ { ( 7.35 × 10^22 ) × (5.98 × 10^24) × 4 × π × V.
the value of Q to maintain the present orbit = 5.71 x 10^13 C.
Answer:
Question 1 = A
Question 2 = C
Question 3 = A
Explanation:
Coal was excellent to help in the production of metals as they required high temperatures. The demand for coal also created a need for more efficient methods of transport. Those methods of transport used the steam engine. This allowed people to gather and use resources from further away and more efficiently.
The locomotive engine could generate more power and carry heavier loads. This made it one of the best options for delivering raw materials, such as coal, or the transport of people over long distances.
The tracks were designed to be uniform and that all the trains and their carriages would have to comply with the same design. The tracks also had to be separated to allow for carriages of different size to pass each other. Stephenson also created a timetable for all trains on his lines to follow and double tracks to avoid any collisions.
Answer: Mary Ellen Pleasant (August 19, 1814 – January 11, 1904) was a 19th-century entrepreneur, financier, real estate magnate and abolitionist. She was arguably the first African-American self-made millionaire, preceding Madam C. J. Walker by decades. She identified herself as "a capitalist by profession" in the 1890 United States census.
Explanation:
