Answer:
The soil is comprised of various layers which are commonly known as the horizons, of which D is also a part of it. The D horizon is not always found. But it sometimes occurs below the B or the C horizon.
The materials that are present in this horizon are not affected by the weathering process. They are comprised of unaffected, raw mineral matter and are very hard and resistant like the parent rock. This layer gives rise to the formation of a much more complex layers that are comprised of numerous mineral matter.
you're most likely to find Bedrock
2. water being poured
3. triangular glass prism
4. 2 silver spoons
PLZ HELP!!
I just took the test and the two silver spoons was correct :)
PT HW 3.1
(linear) Kinetic Energy and Wor
1.a. A bicycler has a mass of 80. kg. He pedals the bike 100 min 20 seconds. What is
his kinetic energy (KE;)?
Given, Unknown:
Equation, Substitute:
Solution:
1.b. The bicycler (still 80.kg of mass) doubled his speed to 200m in 20 seconds, What
his new kinetic energy (KE)? What is the ratio of KE; and KE?
Given, Unknown:
Solution
Equation, Substitute:
1.c. The bicycler doubled his speed. What happened to his KE?
2.a. Car A has a mass of 250. kg. It's engine accelerates it from 0.0 to 20. m/s in 6.0
ndo (a) what is the car's acceleration in m s?
tio hstitute:
Solution:
Answer:
1.a) 1 kJ
1.b) 4 kJ
ratio 1:4
1.c) 4 times as before
2.a) 3.33 m/s2
Explanation:
1.a) bicycle's velocity =Displacement/time
=100/20 m/s
=5 m/s
bicycler's KE =1/2 *mass*(velocity)^2
=1/2*80*5^2
=1000 J = 1 kJ
1.b) bicycle's new velocity =200/20 m/s
=10 m/s
bicycler's new KE =1/2*80*10^2
=4000 J = 4 kJ
Ratio= KE 1 :KE new
= 1 :4
1.c) when bicycler's speed was doubled it increased the KE by 4 times (2^2). because In KE we consider the square of the speed , so the factor we increase the speed , the KE will get increased with the square value of it
ex : speed is triple the prior value , then the KE is as 3^2 times as before. that is 9 times
2.a) car acceleration = (20-0)/6 m/s2
= 3.33 m/s2
What is the final speed of the car after this work is performed?
Answer:
9.43 m/s
Explanation:
The law of conservation of energy requires that the total energy before and after transformation must be equal. Kinetic energy of car and rocket combined equals the parachute energy and that of car.
Final energy of car will be 66120-36733=29,387 J
Kinetic energy, and making v the subject of the formula then
Where m is the mass and v is velocity.
Substituting 29387 J for KE and 661 kg for m then
As the fuel burns, the shuttle accelerates in the creases because the acceleration of an object caused by a net force is inversely proportional to the size of the net force.
The rate at which velocity, measured in terms of speed and direction, changes over time is known as acceleration. Anything is said to have been accelerated when it goes faster or slower in a straight line.
Because the direction is always shifting, motion on a circle accelerates even while the speed is constant.
Acceleration is the term used to describe a change in an object's speed or direction. Velocity changes at an acceleration rate. Recall that velocity consists of two elements: speed and direction.
To know more about Acceleration, visit-brainly.com/question/2303856
#SPJ2
A.
only at angles less than 45°
B.
only at angles greater than 45°
C. only at 45°
at any angle between -90° and 90°
D.
E.
only at 0°
Reset
ext
Answer:
b i think
Explanation: