Answer:
The factors in the physical environment that are important to health include harmful substances, such as air pollution or proximity to toxic sites the focus of classic environmental epidemiology access to various health-related resources e.g. healthy or unhealthy foods, recreational resources, medical care.
Given: 280 watts power a day
Unknown: KwH=?in 30 days
Solution: 280 watt-hours per day/1000x30 days
.28 x 30=n
Answer:8.4 kwh
Answer:
750W
Explanation:
Given parameters:
Weight = 1 x 10³N = 1000N
Distance = 1.5m
Time = 2s
Unknown:
Power = ?
Solution:
Power is the rate at which work is done
Work is the force applied on a body to move it through a particular distance
Work = force x distance
Power = 
Now, work = 1000 x 1.5 = 1500J
So;
Power = 
= 750W
Answer:
M = 49.4kgm/s (towards the left)
Explanation:
Momentum is the product of mass and velocity of an object
Momentum = mass * velocity
Momentum of Object 1 with mass 1.66 kg moving to the right at 11.2 m/s, is expressed as:
M1 = 1.66 * 11.2
M1 = 18.592kgm/s
Momentum of Object 2 with mass 6.59 kg moving to the left at 10.4 m/s is expressed as:
M2 = 6.59 * -10.4
M2 = -68.536kgm/s (negative since it is moving towards the left)
The total momentum will be the sum of momentum along the x-component as shown:
M = M1+M2
M = 18.592kgm/s--68.536kgm/s
M = -49.944kgm/s
M = 49.4kgm/s (towards the left)
