I need all or some answers to these questions
1 answer:
1. it`s due to the gravitational pull of earth which causes Moon to orbit the Earth.
2. No,it`s not always noticeable.You must have heard that earth pulls apple so it falls downward but the fact is apple also pulls earth but the pull isn`t noticeable.
3. I have only one thing that is the distance between the masses.
4. The quantity of matter contained in a body is called it`s mass whereas weight of an object is the force of attraction with which it is attracted towards the centre of a planet.Mass of an object is constant everywhere bt weight of an object varies from place to place.Mass is measured by beam balance whereas Weight is measured by spring balance.
5. You will fall back on the surface of earth.It happens because of the force of gravity of the earth.
6. If u jump on the moon u will float away(I guess).
7. Weightlessness is a condition where weight of an object is experienced to be zero.The mass doesn`t change as it remains constant everywhere.I will add an image for this one which may help you.
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Answer:
a. A = 0.0859 m^2
b. A = 0.0178 m^2
Explanation:
Two flat surfaces are exposed to a uniform, horizontal magnetic field of magnitude 0.47 T. When viewed edge-on, the first surface is tilted at an angle of from the horizontal, and a net magnetic flux of 8.4 103 Wb passes through it. The same net magnetic flux passes through the second surface. (a) Determine the area of the first surface. (b) Find the smallest possible value for the area of the second surface.
take note that the question has not specified th angle which the surface is tilted so i assume the angle is at to the horizontal
flux = BAcos()
B=magnetic flux in Weber
A=area of the flat surface in m^2
=the angle to the horizontal
a) 8.4 x10^-3= (.47)Acos(78)
alpha has to be the angle from the normal and not the horizontal so 90-12=78,
8.4 x10^-3
/(.47)cos(78)
A = 0.0859 m^2
b) If flux remains the same then for it to be the smallest possible area it needs to be perpendicular to the magnetic field so alpha would be 0.
8.4 x10^-3 = (.47)Acos(0)
A = 0.0178 m^2