Explanation:
In general, hot wet climates accelerate chemical weathering while cold dry climates accelerate physical weathering. Although the rate of weathering depends on the type of rock, rocks in tropical climates experience the highest rates of weathering because of the combination of high heat and heavy rainfall.
Answer:
Explanation:
Let the potential difference between the plate is V . Then in the first case
Electric field E between plate
E₁ = V / d
where d is separation between plate
When the plate separation becomes d / 2
Electric field E between plate
E₂ = V / d /2
= 2 V / d =2E₁
Or twice the earlier field
Answer:
<em>45.375m</em>
Explanation:
To get the distance travelled by the body we will use the equation of motion
S = ut + 1/2at²
u is the initial speed = 0m/s
a is the acceleration
t is the time = 5 seconds
We need to get the acceleration first:
According to Newton's second law,
Fm is the moving force = Wsin theta
Ff is the frictional force = 1500N
m is the mass = W/g
m = 4000/9.8
m = 408.16kg
Substitute the given values in the formula and get the acceleration:
Get the required distance:
Recall that S = ut+1/2at²
S = 0(5) + 1/2*3.63*5²
S = 0+0.5*3.63*25
S = 45.375m
<em>Hence the distance travelled by the body in 5 seconds if the force of friction is 1500N is 45.375m</em>
Explanation:
work done is expressed as:
w=fd
where did force and d is distance
w=30*10
=300J
w is said to be done when a load is moved at a distance.
Answer:
My arms are doing a negative work
Explanation:
When you set something on the ground, the displacement of the object set towards the ground is in the downward direction. which means that, in this case, there is a downward displacement.
As the object is set on the ground, the force exerted by the arms on the object acts in the upward direction.
Summarily, direction of force is upwards while the direction of displacement is downwards.
Since the force and displacement act in opposite direction, a negative work is said to be done.