Answer:
57 kg
Explanation:
Mass of seesaw = 20 kg
Length of seesaw = 4 m
Mass of child on the longer end = 30 kg
The weight of the seesaw acts at the center i.e. 2m
The algebraic sum of moments of all forces about any point is zero, hence, using the fulcrum as the reference point:
[x * 9.8* 1.5] - [20 * 9.8* (2.5 - 2)] - [30 * 9.8 * 2.5] = 0
=> 14.7x = (20*9.8*0.5) + 735
14.7x = 98 + 735
14.7x = 833
=> x = 833/14.7
x = 57 kg
The generation of more potent telescopes to observe the Universe made things easier/better for us to research and explore our solar system.
<h3>What are technological advances in Astronomy research?</h3>
The technological advances in Astronomy research are all those devices and strategies aimed at enhancing our ability to explore the Universe, which is represented by telescopes that generate high-resolution images.
Therefore, with this data, we can see that technological advances in Astronomy research are associated with the development of potent telescopes which facilitate the observation of other celestial bodies from the Earth.
Learn more about technological advances in Astronomy here:
brainly.com/question/20797642
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Answer:
17867.36 Pa
Explanation:
height, h = 1.72 m
density of blood, d = 1.06 x 10^3 kg/m^3
acceleration due to gravity, g = 9.8 m/s^2
Pressure P = h x d x g
P = 1.72 x 1.06 x 1000 x 9.8
P = 17867.36 Pa
Answer:
a) 0.0025 rad/s
b) 20.15 m/s2
c) 0 m/s2
Explanation:
Unit conversion:
3220 km = 3220000m
29000km/h = 29000 km/h * 1000m/km * 1/3600h/s = 8056 m/s
a) The angular speed:
b) The radical acceleration:
c) Assume constant velocity, the tangential acceleration of the spaceship would be 0.