<span>B.Water molecules will transfer heat as they move from the lower part of the bucket to the boat through all the condutions</span>
Answer:
Explanation:
The sun is made up of 6 parts. Namely:
- The core
- The radiation zone
- The convection zone
- The photosphere
- The chromosphere and
- The corona
The convection area is just above the radiation zone. As materials from the suns core are heated, they rise above the radiation zone towards the EDGE of the convection area then sinks back again into the radiative zone for more heat.
The radiative zone is 12.6 million Fahrenheit hot and is just above the core.
The core of the son is not solid but plasma whose motion is like gas. Its temperature stands at 48 million Fahrenheit
Cheers
Answer:
A simple machine having a velocity ratio of 3 simply means that the ratio of the distance moved by effort to the distance moved by load is equal to 3.
Explanation:
A simple machine can be defined as a type of machine with no moving parts but can be used to perform work.
Basically, a simple machine allows for the transformation of energy into work. The six simple machines are;
I. Inclined plane.
II. Screw.
III. Wheel and axle.
IV. Lever.
V. Wedge.
VI. Pulley.
Mathematically, the velocity ratio of a simple machine is given by the formula;
Hence, a simple machine having a velocity ratio of 3 simply means that the ratio of the distance moved by effort to the distance moved by load is equal to 3.
Over the course of a long drive, as a result of alternating between braking and acceleration and of course steering, tires get heated up. When this happens, the air within the tires gets heated up, causing the air within the tire to expand. This expanding air exerts force on the tire from inside thus increasing tire pressure.
Answer:
v₂ = - 1.29 m / s
, K₁ / Em = 0.996
, K₂ / Em = 0.004
Explanation:
This is an exercise for the moment, where the system is formed by the shotgun, the man arm and the bullet, in this case the forces are internal therefore the moment is conserved
Initial. Before shooting
p₀ = 0
Final. After shooting
= m v₁ + M v₂
Where index 1 is for the bullet and index 2 for the shotgun, arm and man set
The mass of the bullet is m = 0.04 kg
The mass of the set M = 3.0 + 12.5 = 15.5 kg
p₀ =
0 = m v₁ + M v₂
v₂ = - m / M v₁
v₂ = - 0.04 / 15.5 400
v₂ = - 1.29 m / s
The mechanical energy is equal to the kinetic energy, let's calculate the energy for each of the two elements
K₁ = ½ m v₁²
K₁ = 1/2 0.04 400²
K₁ = 3200 J
K₂ = ½ M v₂²
K₂ = ½ 15.5 1.29²
K₂ = 12.90 J
The total energy of the system is the sum of the energy of each component
Em = K₁ + K₂
Em = 3200 + 12.90
Em = 3212.9 J
The fraction of transmitted energy is
To the bullet
K₁ / Em = 3200 / 3212.9
K₁ / Em = 0.996
To the system
K₂ / Em = 12.9 / 3212.9
K₂ / Em = 0.004