Answer:
Explanation:
The impulse equation is
Δp = FΔt, where Δp = final momentum - initial momentum, F is the Force exerted on an object, and Δt is the change in time. In this equation,the entire right side defines the impulse. In other words, FΔt is the impulse; thus the change in momentum an object experiences is due to its change in impulse and is directly proportional to it.
Therefore, once we find the change in momentum, that is the impulse the object experiences. Δp = final momentum - initial momentum, where
p = mv and p is momentum.
so
and
so
; therefore,
Δp = 25.0 - 17.5 = 7.5
which is the unit for momentum
1st question: Meteorology <span>is an important discipline of Earth and space science that focuses on events in the atmosphere
2nd question: </span><span>Scientists of this discipline also research Earth’s changing climate.
3rd question: </span><span>Geology is another discipline of Earth and space science. It examines different types of rocks to learn about how Earth was formed.
4th question: </span><span>Two useful tools that geologists use are hammer and lens, used to break apart and examine rocks. </span>
Answer:
for the body to float, the density of the body must be less than or equal to the density of the liquid.
Explanation:
For a block to float in a liquid, the thrust of the liquid must be greater than or equal to the weight of the block.
Weight is
W = mg
let's use the concept of density
ρ_body = m / V
m = ρ_body V
W = ρ_body V g
The thrust of the body is given by Archimedes' law
B = ρ_liquid g V_liquid
as the body floats the submerged volume of the liquid is less than or equal to the volume of the block
ρ_body V g = ρ_liquid g V_liquid
ρ_body = ρ liquid Vliquido / V_body
As we can see, for the body to float, the density of the body must be less than or equal to the density of the liquid.
It is both.
<span>It is a physical change because when you chew your food you break it up into smaller pieces and are therefore changing its size and shape which are physical changes. </span>
<span>However, digestion begins in the mouth. When we chew our food, it mixes with enzymes from our saliva and begins to break down the food. Digestion is a chemical change.</span>
Should be able to pull it off the same way you got it on
