Match the facts to the examples. The force of gravity increases with an increase in the mass of objects. Acceleration due to gra
2 answers:
Answer:
1). The force of gravity increases with an increase in the mass of objects
A large, massive dog weighs more than a small dog.
2). Acceleration due to gravity is independent of the mass of objects
Two falling inflated balls of different masses land at the same time.
3). Air resistance increases with an increase in the surface area of objects
A crumpled ball of paper falls faster than a sheet of paper of the same mass.
Explanation:
1). Force of gravity on an object placed near the surface of earth is given by
F = mg
so here if mass of the object is more then it will have more gravitational force due to earth so massive dog weigh more than small dog
2). Acceleration due to gravity is acceleration of an object due to its gravitational force
so here for all objects near the surface of earth acceleration is due to gravity and remains constant.
So here if two different object will fall from same height under gravity then both will reach ground at same time.
3). Air drag or air resistance depends on area of object so if area of object is more then it will experience more air drag
This will show that if a paper is crumpled then its area will be less and then it will have less resistance while open paper has more area and due to its more resistance it will fall slowly than crumpled paper
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Answer:
C. 590 mph
Explanation:
Given:
- velocity of jet,
- direction of velocity of jet, east relative to the ground
- velocity of Cessna,
- direction of velocity of Cessna, 60° north of west
Taking the x-axis alignment towards east and hence we have the velocity vector of the jet as reference.
Refer the attached schematic.
So,
&
Now the vector of relative velocity of Cessna with respect to jet:
Now the magnitude of this velocity:
is the relative velocity of Cessna with respect to the jet.
(a) The net flux through the coil is zero.
In fact, the magnetic field generated by the wire forms concentric circles around the wire. The wire is placed along the diameter of the coil, so we can imagine as it divides the coil into two emisphere. Therefore, the magnetic field of the wire is perpendicular to the plane of the coil, but the direction of the field is opposite in the two emispheres. Since the two emispheres have same area, then the magnetic fluxes in the two emispheres are equal but opposite in sign, and so they cancel out when summing them together to find the net flux.
(b) If the wire passes through the center of the coil but it is perpendicular to the plane of the wire, the net flux through the coil is still zero.
In fact, the magnetic field generated by the wire forms concentric lines around the wire, so it is parallel to the plane of the coil. But the flux is equal to
where
is the angle between the direction of the magnetic field and the perpendicular to the plane of the coil, so in this case 
and so the cosine is zero, therefore the net flux is zero.
In fact, the magnetic field generated by the wire forms concentric circles around the wire. The wire is placed along the diameter of the coil, so we can imagine as it divides the coil into two emisphere. Therefore, the magnetic field of the wire is perpendicular to the plane of the coil, but the direction of the field is opposite in the two emispheres. Since the two emispheres have same area, then the magnetic fluxes in the two emispheres are equal but opposite in sign, and so they cancel out when summing them together to find the net flux.
(b) If the wire passes through the center of the coil but it is perpendicular to the plane of the wire, the net flux through the coil is still zero.
In fact, the magnetic field generated by the wire forms concentric lines around the wire, so it is parallel to the plane of the coil. But the flux is equal to
where