Answer:
Tundra Biome
Explanation:
Permafrost is a type of soil that is frozen all year round. It consists of rocks, soils and ice. The ice or frost holds the earth materials together.
The tundra biome lies below the arctic circle close to the north pole. Most of the earth here is predominantly frozen all year round. A layer of glacier covers the surface and a deep lying layer of permafrost follows suit.
Some mountain tops capped with ice shows this tundra features.
Most tundras are termed cold deserts as they have little to no precipitation all year round. There is absence of vegetation cover as a result of low growing season of the plants.
battery
Explanation:
Electromagnets can be created by wrapping a wire around an iron nail and running current through the wire. The electric field in the wire coil creates a magnetic field around the nail. In some cases, the nail will remain magnetised even when removed from within the wire coil
Answer:
<h2>0.39m/s^2</h2>
Explanation:
Step one:
given data
mass m= 300kg
applied force F= 1000N
coefficient of friction μ= 0.3
Step two:
The net force Fn= applied force-friction force
Fn=F-F1
F1= limiting force
F1=μ*m*g
F1=0.3*300*9.81
F1=882.9N
the Net force= 1000-882.9
Fn=117.1N
Step three:
we know that
F=ma
Fnet=ma
a= Fnet/m
a=117.1/300
a=0.39m/s^2
Answer:
D. 3
Explanation:
First of all the mechanical advantage of a wedge is defined as the ratio of its slope length to its width.
Mathematically,
where,
IMA= Mechanical Advantage
L= slope length, and
w= width.
Given that,
slope length, L= 3.3 inches, and
width ,W= 1.1 inches
Then,
Mechanical Advantage, IMA
Answer:
1) For motion in two dimensions Cartesian co-ordinate system is generally preferred though polar co-ordinate system can be also used for problems involving circular motion.
2) For a general plane motion we can choose any frame depending on the problem that makes it easier to analyse but in general Cartesian coordinate system is preferred.
Explanation:
Motion of particles in space or in planes can be arbitrary in nature meaning that the particle can choose any path to travel. So for the cases of planar motion the Cartesian co-ordinate system is preferred as we are to deal with only 2 unknown position co-ordinates of the particle. But if the motion is circular such as around a circle then the analysis is much simplified by using polar co-ordinate system.
Similarly depending on the motion of the particle in space we can choose Cartesian or spherical or cylindrical co-ordinate system for easier analysis depending upon the nature of the problem.
