calculate the pressure exerted on the floor when an elephant who weighs 2400N stands on one foot which has an area of 0.4m squared
Answers
Answer:
6000pa
Explanation:
force= 2400N
area= 0.4m
pressure=?
now,
p= f/a
p= 2400/ 0.4
therefore,P=6000 pa.
Related Questions
An atom y has 11 eleven protons 12 neutrons what is the number of electrons in it
Answers
Answer:
Electrons = 11
Explanation:
The amount of protons is = to the amount of electrons
The change in frequency of a wave as its source moves in relation to an observer.
A)
Ultrasound
B)
Frequency
C)
Doppler Effect
D)
Echo
Answers
Answer: B) Frequency
Explanation:
A 12 kg object speeds up from an initial velocity of 10 m/s north to a final velocity of 15 m/s north. Calculate the change in momentum
Answers
Answer:
60m/s
Explanation:
momentum = Mass × Velocity
Initial Momentum = 12 × 10
= 120
Final Momentum = 12×15
=180
Change in Momentum = 180 - 120
= 60m/s
Answer:
60Explanation:
formula for change in momentum = F =∆p/∆t
F∆t = ∆p
∆p = m(v - Vo)
∆p = 12(15-10)
=12(5)= 60
Is there a difference in how a black shirt or a white shirt affects our exposure to us radiation?
Answers
But there is definitely a difference in heat. If you insist on wearing a black shirt and you want to avoid having a heat stroke then you should probably consider bringing water, maybe an extra shirt and sun screen if you have to be outside for more than 10-15 minutes.
Under the sun, the black shirt absorbs all wavelengths (more light). A white shirt reflects the visible light that hits it.
heat follows the same laws of conservation of light energy. This means light energy and heat cannot be created or destroyed. The light and heat has to go somewhere.
The light doesn’t cause the heat but they follow the same rules so instead of visually seeing the lack of light, you feel the heat energy that is being absorbed by your shirt.
you are exposed to the same amount of radiation wearing a black shirt as you are the white shirt. The difference is the “color” (because some people don’t consider black and white a color) and how light reacts to it.
I hope I was able to help!! This was a great question :)!!
Based from the flow chart, what can you generalize about the formation of typhoons? How do typhoons develop?
Answers
Answer: Warm water from the ocean is needed to develop typhoon
Pls Rate this as Brilliant Answer thank you :) keep on learning
Typhoons form when strong winds blow into warm areas of the ocean. These winds pick up moisture and rise, bringing colder air with them. This creates pressure, causing the winds to move quickly. The winds revolve or spin around a central point known as an eye.
What is typhoon ?A typhoon is a mature tropical cyclone that forms in the Northern Hemisphere between 180° and 100°E. The Northwestern Pacific Basin is the most active tropical cyclone basin on Earth, accounting for nearly one-third of the world's annual tropical cyclones.
The Philippines is just above the equator and faces the western Pacific, with little else to absorb storm energy before it reaches land. Storms are fueled by warm, tropical waters, which produce approximately 20 typhoons per year.
Hurricanes and typhoons can wreak havoc on coastlines and hundreds of miles inland. They can generate winds of up to 155 mph, as well as tornadoes and microbursts.
Thus, Typhoons form when strong winds blow into warm areas of the ocean.
To learn more about typhoon, follow the link;
https://brainly.com/question/1933929
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The dog has ran 100 meters in 20 seconds and then 300 meters in 25 seconds what was the average speed of the dog over the entire time it was running
Answers
Explanation:
the speed of the dog was 400
Pleaseee can u help with q 3 and 4
Answers
Answer:
Number 4 is C.
Explanation:
Trust me
Answer:
number 3 = A and number 4 = c
An experiment is designed to test what color of light will activate a photoelectric cell the best. The photocell is set in a circuit that "clicks" in response to current. The faster the current, the more clicks per minute. In this experiment, the number of clicks in one minute is recorded for each color of light shining on the photocell. To change the color of light, a different color of cellophane is placed over the same flashlight and the flashlight is then located a specific distance from the photocell.
Which of the following was not kept constant?
the color of the light after it has passed through the cellophane
the source of the original light
the distance of the light from the photocell
the test for photocell activation
Answers
Answer:
the color of the light after it has passed through the cellophane
Explanation:
Since in the given experiment, there is an impact of various colors of light on the cell i.e. photoelectric that should be measured. The photocell should be placed in a circuit when the current would passed. For every color that falls on the photocell, the value of the current that passed via the cell represent an idea.
In the given situation the color of light shows an independent variable and the dependent variable is clicks per minute or the current that passed through the cell
Answer:
A-the color of the light after it has passed through the cellophane
Explanation:
On planet Q, g = 2.24 m/s2. If the mass of planet Q is 8.96
1021 kg, what is the radius of planet Q?(G = 6.67 * 10-11 N
(m/kg))
a
8.95 x 1032 m
b 5.17 x 10 m
C 1.26 108 m
d 9.23 x 1024 m
e
4.72 x 106 m
Answers
Answer:
5.17 x 10^5
Explanation
The correct answer is (b) [tex]5.17*10^{5}m[/tex]
Let us consider an object of mass m on the planet Q.
On planet Q, let the acceleration due to gravity be g = 2.24 m/[tex]s^{2}[/tex]
Mass of the planet is M = [tex]8.96*10^{21} kg[/tex]
Let its radius be R
and the universal gravitational constant G = [tex]6.67*10^{-11} m/kg[/tex]
Gravitational Force acting on the object:
[tex]mg=\frac{GMm}{R^{2} }[/tex]
[tex]R=\sqrt{\frac{GM}{g} } \\R=\sqrt{\frac{6.67*10^{-11}*8.96*10^{21} }{2.24} }\\R=5.17*10^{5} m[/tex] is the radius of the planet Q.
Learn more about gravitational force:
https://brainly.com/question/17531377
pls help i’ll give brainliest if you give a correct answer!!
Answers
Explaining the incorrect answers:
-It’s not frictional force because friction only occurs when something is moving and also making contact. While there is contact in this scenario, the apple is not moving.
-There is no applied force; that would be something like a push.
-There is a gravitational force on the table, but it doesn’t keep the apple’s push in check. They are both pointed downwards, to the earth.
Hope this helps!
A 615 watt refrigerator runs 24 hours/day. How much energy is used per month (30 days)?
Answers
Answer:
14.76
Explanation:
If you put it in the calculator it would show
Use the image to answer the question. Which process enables the boy to see
over the wall?
A.diffraction
B.interference
C.reflection
D.refraction
Answers
HELLO
İ THİNK D
WHY D?
BCUESE SEN COK MALSİN ZAAA DAHA TÜRCE BİLMİYON MK
write any four importance of pressure
Answers
Answer:
Here is your ans
Explanation:
hope it helps you tq
A vector is defined by its direction and length; its location does not
matter.
A:True
B:False
Answers
False.
a quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another.Vectors are quantities that are fully described by magnitude and direction. Not Length!
Answer:
B.) False
Explanation:
Please put my answer as brainlist answer
I hope it helps you
HELP ME PLS
when your sence becomes sharper what is that
a.respitory system
b.circulatery system
c.nervouse system
d.muskeler and skeletal system
Answers
Answer:
it will option C ,hope it helps
Answer:
nervous system is your answer
The structure of an atom consists of ________.
A.
a proton surrounded by neutrons
B.
a nucleus surrounded by electrons
C.
a nucleus containing protons and electrons
D.
a "cloud" of protons, electrons, and neutrons
Answers
Answer:
The correct answer is B. a nucleus surrounded by electrons.
2. True or False: Molecules always vibrate at the same speed??
Answers
Answer:
False
Explanation:
There are 3 states of matter, and all states have molecules. These molecules vibrate in different speeds, depending on the mass, weight, and stae off matter of the object.
Una pelota de golf se suelta desde el reposo del techo de un edificio muy alto. Despreciando la resistencia del aire, calcule (a) la posicion y (b) la velocidad de la pelota despues de 1s, 2s y 3s.
Answers
Answer:
a) y = y₀ - 4.9, v = -9.8 m / s, b) y =y₀ - 19.6, v = - 19 m / s
c) y =y₀ - 44.1, v = - 29.4 m / s
Explanation:
To solve this exercise let us use the kinematic relations
y =y₀ + v₀ t - ½ g t²
v = v₀ - g t
They indicate that the body is released therefore the initial velocity is zero v₀ = 0
y = y₀ - ½ g t²
v = - gt
a) the position and velocity for t = 1s
y = y₀ - ½ 9.8 12
y = y₀ - 4.9
v = - 9.8 1
v = -9.8 m / s
the negative sign indicates that the velocity is directed downwards
b) t = 2 s
y =y₀ - ½ 9.8 2 2
y =y₀ - 19.6
v = - 9.8 2
v = - 19 m / s
c) t = 3 s
y = y₀ - ½ 9.8 3 2
y =y₀ - 44.1
v = - 9.8 3
v = - 29.4 m / s
Where do electrons spend most of their time?
Answers
Answer:
around the nuclei of each atom
Explanation:
Answer:
Before bonding, the atom's electrons spend most of their time around the nuclei of each atom.
Explanation:
Once bonded, the electrons spend most of their time between the two nuclei.
Why can videos be streamed from one computer to another with excellent quality?
Answers
Answer:
(d) they are transmitted using digital signals
Explanation:
i just did the quiz an got it right
Answer:they are transmitted using digital signals
Explanation:
When the distance between two charges decreases, the electric force.
Question 8 options:
A. Decrease
B. Only decreased if both charges are opposites
C. Increase
D. Only increase if both charges are positive
Answers
Answer:
Increase.
Explanation:
The force between two charges is given by :
[tex]F=\dfrac{kq_1q_2}{d^2}[/tex]
Where
k is electrostatic constant
d is the distance between two charges
The force is inversely proportional to the distance between charges. It means when the distance between two charges decreases, the electric force will increase. Hence, the correct option is (c) "increase".
PLS ANSWER FAST TIMED TEST WILL GIVE BRAINLY!!!!!!!!!
True or False?
It is easier to carry an empty backpack than a backpack full of books. This is an example of Newton’s 2nd law.
Answers
Answer:
The answer iis true
Explanation:
It is much easier to carry your backpack when it is empty rather than when it's full of textbooks (or soaked from the rain).
I REALLY NEED HELP THIS IS DUE IN AN HOUR
A person records a bird call as an analog wave. The sound is then stored on a computer as a digital signal. When a person wants to listen to the bird call, it needs to be converted back into an analog wave. What is an advantage of storing the bird call as a digital?
Answers
Answer:
In analog technology, a wave is recorded or used in its original form. In digital technology, the analog wave is sampled at some interval, and then turned into numbers that are stored in the digital device. On a CD, the sampling rate is 44,000 samples per second. An analog recording is considered unlimited. Therefore, it can move to a higher and higher resolution without losing its original quality.
ANSWER QUCIK
PLS THANK YOU
Answers
Chemical energy in the battery of the mobile phone
a golf club is swung and strikes a golf ball with a force of 12.2 N. The golf ball accelerates at 265.2 m/s2. Calculate the mass of the golf ball. Show your work and include the correct unit.
Answers
Answer:
[tex]0.046\ kg[/tex]
Explanation:
[tex]We\ are\ given\ that,\\Acceleration\ produced\ on\ the\ golf\ ball\ due\ to\ Force\ exerted=265.2\ m/s^2\\Magnitude\ of\ the\ Force\ exerted\ over\ the\ Golf-Ball=12.2\ N\\We\ know\ that,\\'The\ force\ acting\ on\ an\ object\ is\ equivalent\ to\ the\ product\ of\ it's\ mass\\ and\ the\ acceleration\ produced'.\\Or,\\F=ma\\Let\ the\ mass\ of\ the\ golf\ ball\ be\ m,\\Hence,\\12.2=265.2\ m\\m=\frac{12.2}{265.2}=0.046\ kg[/tex]
which is not a cinstellation?
Answers
Answer:
The Big Dipper
Explanation:
if a town was 90 miles away and you travel at 45 mph how long would it take to get there
Answers
Answer:
t = 2 hours
Explanation:
Given that,
Distance of the town, d = 90 miles
Speed, v = 45 mph
We need to find the time to get there. The speed of an object is given by :
[tex]v=\dfrac{d}{t}[/tex]
Where
t is time
[tex]t=\dfrac{d}{v}\\\\t=\dfrac{90}{45}\\\\t=2\ h[/tex]
So, the required time is 2 hours.
This tasty snack starts as a kernel and is “popped” then
covered in salt, butter, caramel, peanuts, you name it.
Through thermal energy we've learned to heat things, you
could use conduction, convection and/or radiation. Describe
1 cooking option in detail including whether it is convection,
conduction or radiation. Must be at least 2 sentences.
Answers
Conduction in a pan with hot oil on a stove element.
Convection by an air popper and warm air rising over a heating element... no direct contact with heat source.
Radiation is what occurs in a microwave. Invisible radiant heat activates water molecules in the popcorn.
All the above heat the kernel over 100 Celsius. Water vaporizes/boils (latent heat) and erupts through the kernel.
Mmmm popcorn watch out for the lipids (fat in the oil and butter)
emergency plsss is copper stronger than bricks or that's all the way the opposite pls write ur answer clearly n' I will give 15 points and mark brainliest who answers first so hurry up
Answers
Complete the sentence. Friction always ____________
a. helps the motion
b. opposes the motion
c. both of these
d. none of these
Answers
Answer:
B- Opposes the motion
Explanation:
When two object touches each other. friction acts in a opposite direction to the motion of the object
A marble rolling across a flat surface will not roll forever. This is due to friction. The marble rubs against the flat surface, slowing down until it finally stops.
