Answer:
The building was moved to a distance of, S = 510.2 m
Explanation:
Given data,
The mass of the building, m = 1.45 x 10⁶ kg
The work done to overcome the force of resistance, E = 1 x 10⁸ J
The force of resistance of the building, 2% of building weight
Fₓ = 2 x 1.45 x 10⁶ x 9.8 / 100
= 284200 N
The work done on the building,
E = Fₓ · S
∴ S = E / Fₓ
= 1.45 x 10⁶ / 284200 N
= 510.2 m
Hence, the building was moved to a distance of, S = 510.2 m
Answer: please find the attached file for the solution.
Explanation:
In a velocity time graph for the motion of the body, the total distance covered by the body is area under the graph.
Please find the attached file for the solution.
Answer:
1) i. All these technologies use radio waves, including high-frequency microwaves.
ii. Microwave ovens emit in the same frequency band as some wireless Internet devices.
2. B. The earth absorbs visible light and emits radiation with a longer wavelength.
Explanation:
Electromagnetic radiations are generated when there is an interference between electric and magnetic fields traveling at right angles to each other. All electromagnetic waves forms a spectrum with respect to their frequency and wavelength. The higher the wavelength, the lower the frequency.
All these waves move with the same and constant speed, but are generated from different sources. From the given applications, X-ray has a high frequency, but low wavelength.
In the second case, infrared waves have longer wavelength than visible light.
Break into small particles. The heat causes the rock to break up and form pebbles or sand. Hope that helped. Have a nice day
