Answer:
2. the force of the stone's gravity polling up on the Earth
Explanation:
As we apply the force on the stone, the acting gravity on the stone resists as a reaction force. But that also depends upon the angle of force applied. There will be less force required on the horizontal component than vertical relative to gravity. But the force of friction aided by gravity always resists as a reaction force.
The answer for <span>electromagnetic radiation released during radioactive decay i</span>s C. He
Answer:
Option B
Explanation:
A gaseous, highly reactive non-metal
Answer:
a)3.86 ×10³m/s
b)4.83× 10⁷ s
Explanation:
a)
The speed that a satellite at a given radius must travel so as to orbit in the presence of gravity is given by;
where;
G is the universal gravitational constant given as 6.67 × 10⁻¹¹ N.m²/kg²
m is mass of Earth given as 5.972×10²⁴kg
r is the radius at which the satellites orbit
v is the speed of satellite
r is obtained by the sum of distance from center of Earth and height of satellite from earth
Height of satellite from earth= 11000 nautical miles
1 nautical mile=1.852 km
11000 nautical miles =?
11000*1.852 = 20372 km
1 km = 1000 m
20372 km=?
=20372000m
=2.04×10⁷ m
r= 6.38×10⁶ m +2.04×10⁷ m
r=2.68×10⁷ m
Substitute values in equation;
b)The formula for period is
where T is the period of the satellite
Substituting values
<span>experimental? I hope that helps :)</span>