Answer:
The value in Newton is 
The value in pounds is 
Explanation:
From the question we are told that
The mass of the spacecraft is 
The distance above the earth is 
Generally the gravitational force with respect to the earth is mathematically represented as
Here 
is the mass of earth with value 
is the radius of the earth with value 
G is the gravitational constant with value 
So
Converting to pounds
Answer: The blocks
Explanation:
When the sprinter takes off, he/she presses hard on the block.
The blocks apply an equal and opposite force to the sprinter according to Newton's 3rd law of motion.
The reaction force from the blocks gives the sprinter the initial acceleration to begin the race.
I think the correct answer is the third statement, electron from escaping from the tube containing the triode. The negative charge on the grid repels any electron in the tube. As a result,the flow of current is controlled. If the field is that strong, all current flow will stop resulting to maintaining the electron cloud in the tube.
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