Answer:
The speed of light changes as it moves between media. This causes refraction. Angles of refraction can be calculated using known speeds or wavelengths. Beyond the critical angle, light is reflected.
The answer is true. The table does show an object moving with changing speed.
That would be the dump truck. Momentum depends on how heavy a certain object is in motion. The more weight it has the harder it is to stop.
An impulsive force is a force that is acting only during a short time, I mean, for an instant. Impulse is a physics magnitude define by the product of the impulsive force and the time that it was acting.
Is there any mistake in my English? Please, let me know.
1. Developing renewable energy technology
- Efficient energy storage and smarter grids .
- renewable and rechargeable batteries and fuel cell
2. Saving endangered wildlife
-smart collars for endangered species and reducing human - animal conflict
-Gene sequencing for detecting and researching on deadly animal diseases.
3. Adopting a smarter lifestyle
- smart homes that promote energy saving and green - living .
- electric cars which are three times more conventional vehicles .
Hope this helps :)
