Answer:
See the answers below.
Explanation:
We must apply the definition of density which is the ratio of mass to volume.
[tex]Ro=m/v[/tex]
where:
Ro = density = 2560 [kg/m³]
m = mass [kg]
v = volume [m³]
With the column height data and column radius we can calculate the volume, since it resembles the volume of a cylinder. In this way the volume of a cylinder is defined by the following expression.
[tex]V=\pi *r^{2}*h[/tex]
where:
r = radius = 45 [cm] = 0.45 [m]
h = height = 2.72 [m]
[tex]V = \pi *(0.45)^{2}*2.72 \\V = 1.73 [m^{3} ][/tex]
a)
The mass can be calculated as follows.
[tex]m=Ro*V\\m=2560*1.73\\m= 4428.8 [kg][/tex]
ii)
Pressure is defined as the relationship of force over an area.
The area can be calculated with the radius of the cylinder.
[tex]A=\pi *r^{2}\\A = \pi *(0.45)^{2}\\A = 0.636 [m^{2} ][/tex]
Therefore
[tex]P=F/A\\where:\\F=m*g\\F=4428.8*9.81\\F=43446.53[N][/tex]
[tex]P=43446.53/0.636\\P=68312.15[Pa]\\P=68.31[kPa][/tex]
iii)
If the pressure is very large we must analyze the pressure equation again.
[tex]P=\frac{F}{A}[/tex]
We can see that the pressure depends on the strength (weight) and the area of the column. In this way if we increase the value of the area (denominator) we see that the pressure decreases.
If the new Radius is 50 [cm] = 0.5 [m]
[tex]A=\pi *(0.5)^{2}\\A = 0.785 [m^{2} ][/tex]
Now we can calculate again the pressure.
[tex]P=43446.53/0.785\\P=55317.84[Pa]=55.32[kPa][/tex]
We can see the reduction in pressure.
If you drop a baseball and a soccer ball at the same time which will hit the ground first?
Answer:
Baseball
Explanation:
If two objects are the same size but one is heavier, the heavier one has greater density than the lighter object. The heavier object would fall and hit the floor first. In other words the baseball would hit the ground first.
HOPES THIS HELPS YOU!!! PLEASE MARK AS BRAINLIEST???
Question 2 (10 points)
NEED HELP ASAPPPPPPP!!!!
To stop the soccer ball, and gain control of it is called what?
(a) winning
(b) trapping
(c) stopping
(d) kicking
Answer:
traping
Explanation:
Answer:
B. Trapping
Explanation:
Explain the process used to translate the chemical equation below into a chemical equation written in words. Use details to support your answer.
MgO+C=CO(g)+Mg
Answer:
See explanation
Explanation:
We have to first put down the balanced reaction equation;
MgO+C------->CO2(g)+Mg
We then have to identify each specie in the reaction equation. The reactants are;
Magnesium oxide and carbon
The products are
Carbon dioxide and magnesium metal
So the word equation is as follows;
Magnesium oxide + carbon ----> carbon dioxide + magnesium
In a sentence form;
One mole of magnesium oxide reacts with one mole of carbon to yield one mole of carbon dioxide and one mole of magnesium metal.
pain... physical, mental, emotional?
what is potential displacement?
Answer:
The answer to this question is given below in this explanation section.
Explanation:
"potential displacement"
in geometry and mechanics a displacement is a vector whose length is a shortest distance from the initial to the final position of a point p undergoing motion.it quantifies both the distance and direction of the net or total motion along a straight line from the initial position to the final position of the point trajectory.A displacement may be identified with the translation that maps the initial position to the final position.
A displacement ,may also described as a relative position that is as the final position xf of the point to the point relatively to its initial position xi.The corresponding displacement vectors can be defined as the difference between the final and initial positions.
s=xf-xi=Δx
in considering motion of objects over time,the instantaneous velocity of the object is the rate of change of the displacement as a function of time.The instantaneous speed then is distinct from velocity or the time rate of change of the position vector.if one considers a moving initial position or equivalently a moving origin.
From motion over a given interval of time,the displacement divided by the length of the time interval defines the average velocity which is a vector and differ thus from the average speed,which is a scalar.
At night, within how many feet of approaching a vehicle from the rear must you dim your high beam headlights
Answer: 500 ft
Explanation:
High beam headlights help one to see better at night as the range of vision is greatly expanded. They can however, blind drivers coming on the opposite lane.
It is therefore prudent to ensure that when using high beam headlights, you dim them when a car is coming towards you. The appropriate distance to do so is a minimum of 500 ft from the car.
give me much information about Hubble space telescopes as possible you can. I have final research thing and I need ti write about Hubble telescope but I want to get more information from you guys. I’m giving you A LOT of points!!! (This is astronomy class) posted this again fir other people to answer :)
If the specific heat of water is 4.18 J/gC, what is the approximate increase in thermal energy when the temperature of 10 g of water is raised from 15°C to 35°C?
Answer:
840
Explanation:
Multiply the specific heat and mass. Then subtract the initial temperature from the final one to get 20. Now multiply all your numbers together.
A stunt woman falls into a net. Assume she experiences upward acceleration magnitude while touching the net. Thanks :)
Answer:
I think its C or A
Explanation:
WILL MARK BRAINIEST!!!!!! (Fill in the blanks with the possible answers at the bottom)
1. A Shallow __ is a good indicator of tsunamis, but sends data very slowly and cannot detect earthquakes. *
2. A __ is caused by a sudden shift in the ocean crust which displaces the water. *
3. Tsunamis are common at __ plate boundaries, since large earthquakes release the built up pressure, resulting in a quick vertical movement of the plate. *
4. A tsunamis is possible, but unlikely at a __ plate boundary where two plates are moving sideways past each other. *
5. The Indonesian Earthquake of 2004 had a 9.1__, which was the third largest ever recorded in human history. *
ALL POSSIBLE ANSWERS!!!!
A. Earthquake,
B. Tsunami,
C. Magnitude,
D. Sensor,
E. Transform,
F. Convergent,
G. Divergent.
Which expression is equivalent to 5(2+7)? 0 2(5+7) O 2 + 7(5) O 5(2)+7 O 5(2)+5(7)
Answer:
5(2)+5(7)
Explanation:
5(2)+5(7)=10+35=45
Select the correct rocks.
Identify the igneous rocks.
Answer:
Red Volcano Rock and the Lava Rock Covered in Sulphur
Explanation:
Igneous Rocks are formed by volcanoes, lava, and magna. Sandstone is sedimentary and Slate is metamorphic. The other two are literally formed by volcanoes.
Answer:
Red Volcano Rock and the Lava Rock Covered in Sulphur
Explanation:
HELP PLEASE BOYLES LAW
Answer:
3 L
Explanation:
From the question given above, the following data were obtained:
Initial volume (V₁) = 2 L
Initial pressure (P₁) = 0.75 atm
Final pressure (P₂) = 0.5 atm
Final volume (V₂) =?
Using the Boyle's law equation, the new volume (i.e final volume) of the Ne gas can be obtained as:
Initial volume (V₁) = 2 L
Initial pressure (P₁) = 0.75 atm
Final pressure (P₂) = 0.5 atm
Final volume (V₂) =?
P₁V₁ = P₂V₂
0.75 × 2 = 0.5 × V₂
1.5 = 0.5 × V₂
Divide both side by 0.5
V₂ = 1.5 / 0.5
V₂ = 3 L
Thus, the new volume of the Ne gas is 3 L
Why do Kepler's laws describe?
Answer:
The shape of an orbit
Explanation:
Answer:
The geometry of an orbit
Explanation:
AYE PECKS
Static stretching is done by slowly moving a joint towards its maximum range of motion. You will feel a gentle pulling sensation in the muscle being stretched.
True or False
Answer:
True
Explanation:
It is true that you will feel a gentle pulling sensation in the muscle being stretched when Static stretching is done by slowly moving a joint.
What is static stretching?Static stretching is most likely the most well-known and time-honored method of stretching. This entails extending a muscle to its maximum length and then maintaining that position for at least 15 to 20 seconds.
With each stretch, the emphasis is frequently on focusing on a specific muscle group.
Hence it is true that you will feel a gentle pulling sensation in the muscle being stretched when Static stretching is done by slowly moving a joint.
To learn more about the static stretching refer to the link;
https://brainly.com/question/1237629
A child is on a sled moving down a hill at 27.6 m/s. The combined mass of the sled and child is 60.6 kg. The momentum of the child and sled is ____.
Answer:
1672 kgm/sExplanation:
The momentum of an object can be found by using the formula
momentum = mass × velocity
From the question we have
momentum = 60.6 × 27.6
1672.56 kg.m/sHope this helps you
HELP!! I need an explanation for this question!
Assuming a constant force, and hence a constant acceleration a, we have by Newton's second law,
4.0 N = (1.2 kg) a → a = (4.0 N) / (1.2 kg)
and by definition of average velocity,
a = (5.0 m/s - 2.0 m/s) / t
where t denotes the time for which the force is applied.
So,
(4.0 N) / (1.2 kg) = (3.0 m/s) / t → t = (3.0 m/s) (1.2 kg) / (4.0 N) = 0.90 s
crude oil coal and peat are examples of fossil fuels name another one
Answer:
petroleum and Natural gas are fossil fuels
Explanation:
Why is it generally easy to filter out particles in suspension?
Answer: A suspension is a heterogeneous mixture in which some of the particles settle out of the mixture upon standing. The particles in a suspension are far larger than those of a solution, so gravity is able to pull them down out of the dispersion medium (water).
Explanation:
1. How much heat is produced if you heat .25 kg water from 25 degrees C to 100 degrees C. The specific heat of water is 4180 J/kg C.
Answer:
Q = 78375 [J]
Explanation:
To solve this problem we must use the following ideal equation for the thermal energy of an element or substance depending on the temperature change.
[tex]Q=m*C_{p}*(T_{final}-T_{initial})[/tex]
where:
Q = heat [J]
m = mass = 0.25 [kg]
Cp = specific heat = 4180 [J/kg*C]
Tinitial = 25[°C]
Tfinal = 100 [°C]
[tex]Q =0.25*4180*(100-25)\\Q = 78375 [J][/tex]
HELP WILL MARK BRAINLIEST!!
Answer:15
Explanation:
A child tugs on a rope attached to a 0.62 kg toy with a horizontal force of 16.3 N. A puppy pulls the toy in the opposite direction with a force of 15.8 N. What is the acceleration of the toy
Answer:
[tex]a=51.77\ m/s^2[/tex]
Explanation:
Given that,
The mass of a toy, m = 0.62 kg
Force with which a child pull the toy = 16.3 N
The force with which the toy pulled in the opposite direction = -15.8 N
We need to find the acceleration of the toy. Let F be the net force acting on the toy. It is equal to :
F = 16.3 N - (-15.8 N)
= 32.1 N
Let a be the acceleration of the toy. Using Newton' second law of motion to find it.
F = ma
[tex]a=\dfrac{F}{m}\\\\a=\dfrac{32.1}{0.62}\\\\a=51.77\ m/s^2[/tex]
So, the acceleration of the toy is [tex]51.77\ m/s^2[/tex].
One scientist is using an electromagnetic wave to map the dust between stars. The electromagnetic wave has shorter wavelength than radio waves but longer wavelength than visible light. What electromagnetic wave is the scientist using? X-ray Infrared light Gamma ray Ultraviolet radiation
Q12. How much force is applied on the body when 150 joule of work
is done in displacing the body through a distance of 10m in the
direction of force?
Force = Work/distance
Force = 150/10
= 15 Newtons
Force = 15 Newtons
Therefore, 15 newtons of force is applied to the body when 150 joules of work
is done in displacing the body through a distance of 10m in the direction of the force.
define work and power
Answer:
Work and power is described below in complete details.
Explanation:
Work is described as the method of energy change to the movement of an object through the employment of force. This is ordinarily expressed as the outcome of power and displacement. The SI unit of work is Joule. Power is described as the quantity of energy conveyed in unit time. Power is a measure of the amount of work performed per unit of time.
A 400kg boulder sits on top of a 500m cliff. What is its PE when it reaches 250m from the ground?
Answer:0
Explanation:
gang sh
Answer:
980,000J
Explanation:
What does bubble universe mean
Answer:
Our universe may live in one bubble that is sitting in a network of bubble universes in space. ... The concept is known as a "parallel universe," and is a facet of the astronomical theory of the multiverse. The idea is pervasive in comic books, video games, television and movies.An electric heater is rated at 1500 W. If the heater is rated as 80% efficient, calculate the output
rate of energy
Answer:
Power = 1200 [W].
Explanation:
The efficiency of an electrical equipment is defined as the relationship between the power realized, over the power that is consumed. For this case, they give us the data of consumed power and efficiency in this way we can calculate the power that the equipment performs.
[tex]Efficency=\frac{Power_{done}}{P_{consumed}}\\0.8 = \frac{Power_{done}}{1500} \\Power_{done}=1500*0.8\\Power_{done} = 1200 [W][/tex]
This means that of the 1500 [W], 1200 [W] are actually used to get the job done. This is established by means of the first law of thermodynamics.
the photo shows a swimmer pushing off the side of a pool
Answer:
Every action has an equal and opposite reaction.
Explanation:
Answer:
An action-reaction force pair
Explanation:
How much time does it take to use 300 W of power to do 1800 J of work? Round your answer to the nearest whole
number
The time is
S.
Done
Intro
Answer:
6 seconds
Explanation: