Answer:
As the skydiver falls to the Earth, she experiences positive acceleration only due to gravity.
Explanation:
As the skydiver falls to the Earth, she experiences friction in the form of air resistance which tries to slow her down and is proportional to the her velocity. So it cannot have a positive acceleration as it acts in opposite direction to slow her down.
Inertia during skydiving is experienced when we open an parachute, the parachute slows down the speed of are descent hence changing our inertia of motion with a velocity.
Only the Earth's, gravitational field has an positive acceleration as it pulls us towards the Earth, hence increasing our velocity.
Answer: 13.2678 kg
Explanation: Well, 13.2678 kg is 29.25 in mass and kg.
<h2>Answer: J. J. Thomson
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Thomson conducted a series of experiments on cathode ray tubes, which led him to the discovery of electrons.
This is how on April 30th, 1897 Thomson announced the discovery of the electron (although at that time he called it a corpuscle)
This discovery was considered one of the milestones in science of the late nineteenth century, since it allowed to have a new conception of the structure of matter and its interaction with energy.
It should be noted that from this discovery, Thomson proposed a new model of the atom that although erroneous, remained valid for years and served as the basis for new postulates and research on the subject.
Answer:
The magnification of the lens is 0.7
Explanation:
We have,
Height of an object is 5 cm
Object is placed 4.25 cm from a lens
Image is formed 3.00 cm behind the lens.
It means u = -4.25 cm
v = -3 cm (behind the lens)
Magnification of the lens is given by :
So, the magnification of the lens is 0.7
