B) The amount of work done
Answer:
b
Explanation:
The space shuttle, in circular orbit around the Earth, collides with a small asteroid which ends up in the shuttle's storage bay.
This form of collision is called inelastic collision. And inelastic collision momentum is conserved but the kinetic energy is not conserved. Hence the correct option is b. only momentum is conserved.
Answer:Mechanical ventilation system
Explanation:
Ventilation can be increased to safe levels by using mechanical ventilation system to bring in more fresh air.
There are many ways to provide ventilation for example
- providing ventilation fans in kitchens and bathrooms to remove allergens,moisture.
- A duct should be provided such that it provides fresh air to different rooms and provision should also be made to remove the poor air inside home.