Answer:
Velocity = 0.5 m/s South (A)
Explanation:
You need to determine the average rate of velocity.
The equation you will use is velocity = displacement/time
The displacement is 30m South.
The time is 60 seconds.
Plug into the equation Velocity = 30m South/60 s
Velocity = 0.5 m/s South
Answer:
Explanation:
Given
Width of river=200 m
Speed of river=2 m/s
Speed of Boat relative to river=8 m/s
Boat leaves the bank west of north
Therefore velocity of boat w.r.t ground
Magnitude of boat speed
For direction
w.r.t to west
to cross the river its north component will help so
time taken
Answer:
1751399.8902 J
Explanation:
m = Mass of water = 74.6 kg
= Latent heat of fusion =
= 19.2°C
= 0°C
We have the equation for cold body
We have the equation
Energy rejected to the room is 26667799.8902 J
Energy supplied to the device is given by
The energy supplied to the device is 1751399.8902 J
Conservation tillage practices help reduce soil erosion and maintain soil nutrient levels.
<u>Explanation:</u>
The approach that helps in the reduction of doing tillage practices and also reducing its frequency. this is done for obtaining certain benefits for both environment and economic. This mainly focuses on providing sustainability by leaving some plants remaining in the soil.
It aims in decreasing the emission of gases of greenhouse effects like carbon dioxide. Using these practices helps in reducing the erosion and runoffs. This will promote health of the soil because the nutrients are not take off form the soil due to soil erosion and runoffs.