Answer:
Force of 37.8 × 10^(6) N attracts the two charges
Explanation:
The force between two charges is given by
F = k*q1*q2/r²
Where q1 and q2 are 0.06 C and 0.07 C.
r is the distance between q1 and q2 which is equal to 3 m
k is a constant = 9 × 10^(9) N.m²/C²
F = (9 × 10^(9) × 0.06 × 0.07)/3²
F = 37.8 × 10^(6) N
Answer:
Both hemispheres receive the same amount of sunlight during <em>both autumnal equinox and vernal equinox
</em>
Explanation:
The vernal or spring equinox happens around March 20 or thereabouts yearly. Equinoxes and various seasons happen as the Earth orbits the Sun and the Earth's orbit. Thus, we have Autumn equinox and spring or vernal equinox. During the Northern hemisphere spring and summer, the northern hemisphere is tilted towards the sun while during the Autumn and winter the northern hemisphere is tilted away from the sun.
During the autumn and spring equinoxes, the earth is neither tilted away or towards the sun. This means that both northern and southern hemisphere receive equal sunlight during these periods: that is hours of daylight and night are roughly about the same.
Answer:
We could make a frictionless generator.
Explanation:
This would change life by making the cost for energy next to zero
Answer:
(a) 7 m/s
(b) 931 rad/s
(c) 0.716 s
Explanation:
Gravity would be exerting on the 2 masses
Since heavier, mass 1 (M) would be the one pulling down, while mass 2 is being pulled up.
So the net force on mass 1 is
This force would generate torque on the solid pulley
We can also calculate the pulley moments of inertia, with it being solid
From there we can calculate the angular acceleration of the pulley, which generates the entire system motion
Since the system is moved by a distance of d = 2.5m, the pulley would have turn an angle of
(c)The time it takes to get to this distance is
(b)The final angular speed of the disk is
(a) And so the perimeter speed of the pulley, which is also speed of mass 1 when it comes to d = 2.5 m is
