Answer:
help me please
Explanation:
Answer: 1.38 m/s to the right.
Explanation: We can solve this problem using the principle of conservation of momentum. The momentum of an object is defined as the product of its mass and velocity, and the total momentum of a closed system is conserved, meaning that the total momentum before a collision is equal to the total momentum after the collision.Let the initial velocity of the dart be v, and let the final velocity of the dart and the block be vf. The momentum of the dart before the collision is given by p = mv, where m is the mass of the dart. The momentum of the dart and block after the collision is given by (m + M)vf, where M is the mass of the block.Using the principle of conservation of momentum, we have:p = (m + M)vfSubstituting the given values, we get:0.012 kg v = (0.012 kg + 0.2 kg) 0.78 m/sSimplifying, we get:v = (0.212 kg) (0.78 m/s) / 0.012 kgv ≈ 1.38 m/sTherefore, the velocity of the dart just before it hits the block is approximately 1.38 m/s to the right.
Answer:
Between 23,000 to 54,000 Hz
A dog whistle typically emits sound at frequencies above 20,000 Hz but below 60,000 Hz, which is a range humans cannot hear but dogs can.
The frequency of sound emitted by a dog whistle is typically above the range of human hearing, which upper limit is around 20,000 Hz. However, since dogs can hear up to about 60,000 Hz, you would expect a dog whistle to emit sound at frequencies above 20,000 Hz but below 60,000 Hz. So, a frequency anywhere within the range 20,000 Hz and 60,000Hz would be suitable for a dog whistle.
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an increase in atmospheric carbon dioxide
an increase in biodiversity in the region
a decrease in the use of alternative energy
The immediate result of deforestation in the Amazon rain forest is an increase in atmospheric carbon dioxide.
Deforestation is the process of cutting down trees and clearing forest areas by burning them on a larger scale for the human purposes.
Here,
According to the information released by the government of Brazil in 2005, it was shown that about 10,000 square miles of the Amazon rainforest had been destroyed.
This is due to the enormous loss of forest habitat which caused because of the higher deforestation done over there on a larger scale.
The amazon rainforest is the largest rainforest in the world. Half of the rainforests of the planet is represented by the Amazon rainforest. It comprises most of the biodiversity in the earth.
As a result of deforestation and burning of trees, the Amazon rain forest has been destroyed.
As per the reports, the cattle sector of the Amazon was mostly responsible for the deforestation.
The deforestation and conversion of the forest areas into land area for cultivation and other purposes lead to the destruction of the Amazon forests. This is because, due to the increased level of deforestation and burning of trees, enormous amount of carbon dioxide was emitted and this resulted in a more temperature atmosphere that caused more destruction to the biodiversity of the Amazon rainforest.
Hence,
The immediate result of deforestation in the Amazon rain forest is an increase in atmospheric carbon dioxide.
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Answer:
An increase in atmospheric carbon dioxide since the trees were taking in carbon dioxide from the environment
Explanation:
the slope.
Answer:
Explanation:
Notice that nothing but the mass and height are given, and the mass is not really necessary. It will cancel when we do the problem.
So the potential energy at the top equals the Kinetic energy at the bottom.
PE_top = Ke_bottom
mgh = 1/2 m v^2 Divide by m
mgh/m =1/2 mv^2/m
gh = 1/2 v^2 Multiply both sides by 2
2gh = v^2
Givens
g = 9.81
h = 1.5
Solution
2*9.81 * 1.5 = v^2
29.43 = v^2
v = sqrt(29.43)
v = 5.425
Elements in the same group or family share important properties due to their similar electronic configurations and valence shell structure.
The periodic table is organized based on the electronic structure of atoms, specifically the arrangement of electrons in energy levels or shells. Elements within the same group or family of the periodic table have similar outer electron configurations, leading to shared properties and behaviors.
Elements in a group have the same number of valence electrons, which are the electrons in the outermost shell or energy level of an atom. Valence electrons are crucial because they determine an element's chemical reactivity and its ability to form bonds with other atoms.
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