Answer:
0.0048kg
Explanation:
Given parameters:
Height of flight = 8km = 8000m
Gravitational potential energy = 376J
Unknown:
Mass = ?
Solution:
To solve this problem;
Gravitational potential energy = mgh
m is the mass of the body
g is the acceleration due to gravity
h is the height of the helicopter
Insert the parameters and solve;
376 = m x 9.8 x 8000
376 = 78400m
m = 0.0048kg
Answer:
Please see below as the answer is self-explanatory.
Explanation:
- If the potential at B is lower than A, and the potential at C is lower than B, this means that there is an electric field, directed from A to C.
- If a positively-charged particle is released at rest at point B, it will be accelerated by the electric field (which is a force per unit charge, so it produces an acceleration) in the same direction than the field (because it is a positive charge) towards point C.
The law of universal gravitation says
<em>F</em> = <em>G</em> <em>m</em>₁ <em>m</em>₂ / <em>r </em>²
Plug everything in and solve for <em>r</em> :
2.58 × 10³ N = (6.67 × 10⁻¹¹ N•m²/kg²) (4.87 × 10²⁴ kg) (655 kg) / <em>r</em> ²
<em>r</em> = √[ ((6.67 × 10⁻¹¹ N•m²/kg²) (4.87 × 10²⁴ kg) (655 kg)) / (2.58 × 10³ N) ]
<em>r</em> ≈ 9.08 × 10⁶ m
Answer:
constant velocity means that both the speed and direction do not change . An object moving in a circular path with constant speed does not have a constant velocity because the direction of the velocity is constantly changing. This implies that an object moving at a constant speed in a circular path is accelerating
Noaa. The buoys transmit some of the data on a daily basis to NOAA through a satellite in space.