Who exerts more pressure? a) A girl of 50 kg, wearing heels with an area of 1 cm2. b) An elephant of 4000 kg with foot area of 250 cm2.

Answers

Answer 1

Answer:

The girl exerts more pressure.

Explanation:

Pressure can be defined as the force exerted normally or perpendicularly per unit area.

i.e P = F/A

Girls

Area of the heel = 1cm² = 10^(-4) m²

Force = mg = 50 × 10 = 500N

Pressure =

[tex] \frac{500}{10 ^{ - 4} } [/tex]

[tex] = 5 \times {10}^{6}[/tex]

Elephant

Area = 250cm² = 2.5 x 10^(-2)b m²

Force = mg = 40000N

Pressure =

[tex] \frac{40000}{2.5 \times {10}^{ - 2} } [/tex]

[tex] = 1.6 \times {10}^{6} [/tex]


Related Questions

A 10cm tall object is placed perpendicular to
the principal axis of a convex lens of focal length
30cm. The distance of the object from the line is
20cm.find the i)position ii)nature and iii) size of
the image formed.

Answers

My answer is in the picture

Swipe the pictures to see the others

The larger the number of charges flowing through the wire, the larger is the ____________ flowing in the wire.

Answers

Answer:

The larger the number of charges flowing through the wire,the larger is the current flowing in the wire.

Explanation:

if the wire is large then large amount of current flows through the circuit.but if the wire is small then a smaller amount of current will pass through.

I hope this helps

Mass is measured in
a) Litters
b) Centimeter
c) Newton
d) Kilogram

Answers

Answer:

d) Kilogram.

Hope it helps you

Mass is measured in

a) Litters

b) Centimeter

c) Newton

d) Kilogram

What mass of water in grams will fill a tank 100cm long, 50cm wide, 30cm high?​

Answers

Answer:

150,000grams

Explanation:

100*50*30=150,000

Also 1ml water= 1 grams

Answer:

150,000³

Process:

You multiply 100cm x 50cm x 30cm. The reason you do this is because the "mass" will be the volume of the tank of water. A "small 2" would represent a two dimensional area, whereas the "small 3" would represent a 3 dimensional area.

define null point
define null point ​

Answers

Answer:

In physics a null is a point in a field where the field quantity is zero as the result of two or more opposing quantities completely cancelling each other

11. What is the resolution of this ruler? 6-centimeters​

Answers

six cm - centimeters

maize is called monocot why?​

Answers

Answer:

Rice, wheat, maize all have one cotyledon in their seed, so they are monocots. Explanation: The monocot plants have a single cotyledon. They have a fibrous root system, leaves in monocots have parallel venation.

Explanation:

State which type of variable is plotted on the x-axis
and which type is plotted on the y-axis.

Answers

Answer:

Often the independent variable is plotted on the x-axis - and example might be time (an experiment where time is measured by a watch or an independent mechanical device)

The dependent variable is often plotted on the y-axis - and example here might be the velocity or the acceleration,

It may be the responsibility of the experimenter to determine the value of the dependent variable by some type of measurement

Nikki has a momentum of 45 Kilogram meters per second and a mass of 30 Kilograms. What is her velocity?

Answers

Answer:

45/30

Explanation:

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Nikki has a momentum of 45 Kilogram meters per second and a mass of 30 Kilograms. then her velocity would be 1.5 meters per second

What is momentum?

It can be defined as the product of the mass and the speed of the particle, it represents the combined effect of mass and the speed of any particle, and the momentum of any particle is expressed in Kg m/s unit.

Mathematically the formula of the momentum is

P = mv

where P is the momentum of the particle

m is the mass of the particle

v is the velocity by which the particle is moving

As given in the problem Nikki has a momentum of 45 Kilogram meters per second and a mass of 30 Kilograms

P = 45 Kilogram meters per second

m = 30 Kilograms

By substituting the values of the momentum and the mass in the formula of the momentum

P = mv

45 = 30 ×v

v = 45/30 meters per seconds

v = 1.5 meters per seconds

Thus, Nikki weighs 30 kilograms and moves at a 45 kilogram per the second momentum. subsequently, her velocity would be 1.5 meters per second.

Learn more about momentum from here

brainly.com/question/17662202

#SPJ4

Two trucks left the warehouse at the same time and drove in
the same direction along a straight road. One truck drove at 68
km/h while the other drove at 57 km/h. Find theirs distance
apart after2 hours.

Answers

Truck a
V = 68km/h
t = 2hours

Distance = speed * time

D = 68 * 2

D = 136km




Truck B

Speed = 57km/h

t = 2 hours

Distance = speed * time

D = 57 * 2

D = 114km


Distance travelled by truck A = 136 km

Distance travelled by truck B = 114km

Distance apart = 136km - 114km = 22km

Hence both the trucks will be 22kms apart.

Hope this helps. Plz let me know if you have any doubts.

Which of your groups should you NOT change anything for? (in other
words, everything stays the same for this group)
A.Experimental
B.Control
C.Quantitative
D.Qualitative

Answers

Answer:

B

Explanation:

The control is something that is meant to not be changed, the control is a comparison of the experimental.

how is light reflected from a prism​

Answers

Answer:

White light entering a prism is bent, or refracted, and the light separates into its constituent wavelengths. Each wavelength of light has a different colour and bends at a different angle. The colours of white light always emerge through a prism in the same order—red, orange, yellow, green, blue, indigo, and violet.

White light entering a prism is bent, or refracted, and the light separates into its constituent wavelengths. Each wavelength of light has a different colour and bends at a different angle. The colours of white light always emerge through a prism in the same order—red, orange, yellow, green, blue, indigo, and violet.

what are the major parts of the ear?​

Answers

Explanation:

1.The parts of the ear include:

External or outer ear, consisting of: Pinna or auricle. This is the outside part of the ear. ...

2.Tympanic membrane (eardrum). The tympanic membrane divides the external ear from the middle ear.

3.Middle ear (tympanic cavity) , consisting of: Ossicles. ...

4.Inner ear , consisting of: Cochlea.

Explanation:

The major parts of ear are:-

1) Outer ear

PinnaExternal auditory canalTympanic membrane

2) Middle ear

MalleusIncusStapes

3) Inner ear

CochleaSemicircular canalsVestibule

7. A train is traveling with an initial velocity of 20.1 m/sec. If the brakes can apply a maximum
acceleration of -0.0500 m/sec”, how long will it take the train to stop?

Answers

The time that takes for the train that is traveling with an initial velocity of 20.1 m/s to stop is 402 seconds.    

The time that will take for the train to stop can be calculated with the following kinematic equation:

[tex] v_{f} = v_{i} + at [/tex]   (1)

Where:

[tex] v_{f}[/tex]: is the final velocity = 0 (when it stops)

[tex] v_{i}[/tex]: is the intial velocity = 20.1 m/s

a: is the acceleration = -0.0500 m/s²

t: is the time =?

By solving equation (1) for t, we have:

[tex] t = \frac{v_{f} - v_{i}}{a} = \frac{0 - 20.1 m/s}{-0.0500 m/s^{2}} = 402 s [/tex]

Therefore, it will take 402 seconds for the train to stop.  

To find more about acceleration and velocity go here: https://brainly.com/question/2136991?referrer=searchResults

I hope it helps you!

pls help question are in the picture

Answers

i think the answer is 1.81

Which statement is true?

A. When a gas condenses to a liquid, it absorbs energy.
B. When water boils, it releases energy.
C. When ice melts, it absorbs energy.
D. When water freezes, it absorbs energy.

Answers

Explanation:

The correct answer is option B

Answer:

C. When ice melts, it absorbs energy.

Explanation:

When ice melts, it is getting hotter by absorbing energy and changes from a solid to a liquid. This is an endothermic reaction.

11 An unstretched spring is 12,0 cm long. A load of 5.0N stretches it to 15.0cm. How long will it be under a load
of 15N? (Assume that the spring obeys Hooke's law.)

Answers

Answer: Approximately 22 cm

=========================================================

Explanation:

The unstretched spring is 12.0 cm long. When adding a load of 5.0 N, it stretches to 15.0 cm. This is a displacement of 15.0 - 12.0 = 3.0 cm, which is the amount the spring is stretched.

Convert this displacement to meters (so that it fits with the meters unit buried in Newtons).

3.0 cm = (3.0)/100 = 0.03 m

Apply Hooke's Law to find the spring constant k

F = -kx

5.0 = -k*(0.03)

k = -(5.0)/(0.03)

k = -166.667 approximately

Now we must find the displacement x when F = 15 newtons

F = -kx

-kx = F

x = F/(-k)

x = -F/k

x = -15/(-166.667)

x = 0.089 approximately

x = 0.1

The displacement to one decimal place is about 0.1 meters, which converts to 100*0.1 = 10 cm

So the spring will be stretched to about 12cm+10cm = 22 cm

Who has the greater velocity, an astronaut who has just completed an orbit of the Earth or you when you have just traveled from home to school? Explain.

Answers

Answer:

the answer is

Explanation:

constant acceleration

because when the object's velocity is changing then the object is accelerating or decelerating

as acceleration describe changing of velocity so the answer is constant acceleration

Acceleration is defined as the rate of change of velocity.

Acceleration = (Change in velocity) / time taken

Acceleration = (Final velocity - initial velocity) / time

As the object velocity changes by the same amount in each second, it means the acceleration is constant.

Hope I can help u

plzz can anyone solve this

plzzzz guys tomorrow is my exam ..
plzz​

Answers

Answer:

i hope it helped U

stay safe stay happy

Please help ???????.......

Answers

Answer:

300,000=3×10^3

.000012=1.2×10^-6

ASAP If the initial pressure of a gas is 100 kPa, initial volume is 1.0 L, and final pressure is 25 kPa, what is the final volume?

When no one answers your question...

Answers

The final volume is 4.0 liters.

We can calculate the final volume with Boyle's law:

[tex] P_{i}V_{i} = P_{f}V_{f} [/tex]  (1)

Where:

[tex] P_{i}[/tex]: is the initial pressure = 100 kPa

[tex] V_{i}[/tex]: is the initial volume = 1.0 L

[tex]P_{f}[/tex]: is the final pressure = 25 kPa

[tex]V_{f}[/tex]: is the final volume =?

Hence, the final volume is:

[tex] V_{f} = \frac{P_{i}V_{i}}{P_{f}} = \frac{100 kPa*1.0 L}{25 kPa} = 4.0 L [/tex]

Therefore, the final volume is 4.0 liters.

You can learn more about  Boyle's law here: https://brainly.com/question/21184611?referrer=searchResults

I hope it helps you!

If a diver displace water with a weight of 500N what is the upthrust on the diver?​

Answers

Answer:

500N

Explanation:

Basically the weight of water displaced is the amount of upthrust. The upthrust is equal to the weight of the water moved by the submerged part of the body and therefore is equal to 500N.

Hope this helps!

A train is moving with the velocity of 10m/s . It attains an acceleration of 4m/s after 5 sec . find the distance covered by train at that time.

Answers

Jdndbxndbsjanwndnfbdbdjdjd

S=1/2(u+v)t

i. u as subject
ii. V as subject

Answers

Answer:

i. [tex]u=\frac{2s}{t}-v[/tex]

ii. [tex]v=\frac{2s}{t}-u[/tex]

Explanation:

i.)

[tex]s=\frac{1}{2}(u+v)t\\\\2s=(u+v)t\\\\\frac{2s}{t}=u+v\\\\\frac{2s}{t}-v=u[/tex]

ii.)

[tex]s=\frac{1}{2}(u+v)t\\\\2s=(u+v)t\\\\\frac{2s}{t}=u+v\\\\\frac{2s}{t}-u=v[/tex]

Give an example for each of the following, where the force:
a) changes the direction of a moving object.
b) changes the speed of a moving object.
c) changes the shape and size of an object.
d) stops a moving object.
e) moves a stationary object.

Answers

Explanation:

A cricket player hitting the ball from opposite direction.A footballer kicking ball with more force.Heating of a plastic bottle.Applying brake of a car.rolling a stopped marble on a table.

a).  The gravitational forces between the Earth and the Sun bends the Earth's motion along a curving path instead of a straight line.

b).  The gravitational forces between the Earth and a falling rock make the rock fall faster and faster.

c).  The force of a pressurized stream of hot air makes a balloon get rounder and bigger.

d).  The gravitational forces between the Earth and a rock tossed straight up make the rock go slower and slower, and eventually stop.  (In the next instant,  it starts falling, as described in answer-b.))

e).  The acoustic and emotional force of your mother's voice 15 minutes before the school-bus arrives causes you to turn over, sit up, and start putting on your socks.

if u can solve these with work i will literally love u forever

Answers

Answer:

I cant open it neither I can download it!

Worth 10 points! I will give brainliest!! Please help!!! See picture!

Answers

it contains iron. so it aligns with the magnetic Field lines

Answer:

The last option

Explanation:

10. Numerical problems:

b. A stone is thrown vertically upwards with an initial velocity of 20 m/sec.find the maximum height it reaches and the time taken by it to reach the height. (g = 10 m/s2).

c. A car is moving at a rate of 72 km/hr. How far does the car move when it stops after 4 seconds?

d. A bus starts from rest. If the acceleration is 2 m/s2, find
1. the distance travelled.
2. the velocity after 2 seconds.

e. A stone is thrown vertically upward with the velocity of 25 m/s. How longo it take to reach the maximum height? Also calculate the height.


with process please ​

Answers

Answer:

a)20 m,2s

Explanation:

Given

Initial velocity=20 m /sec

g=10 m/s square

v =0m/s

h =?

t =?

now,

v = U +gt

=v=20 +10t

Or,10t=20

Or,t=20

10

therfore ,2 s.

Again,

h=ut -1 gt square

2

Or, h=20×2-1×10(2)square (multiply and cut )2×5 =10

; 2

Or,40-5×4

therefore , 20m

For question e,

u = 25 ms-1
v = 0 m/s
a = -10m/s^2

We have to find time and distance,

For time,

v = u + at

Which can be rephrased as,

v - u/a = t

t = 0 - 25 / -10

t = 2.5 secs

Hence, the stone takes 2.5 secs to reach the maximum height.

To calculate the maximum height attained by the stone, we have to calculate distance/ displacement .

The formula for calculating distance is,

s = ut + 1/2at^2

s = 25 * 2.5 + 1/2 * -10 * 2.5 * 2.5

s = 62.5 + (- 31.25)

s = 62.5 - 31.25

s = 31.25mts

Hence, the maximum distance travelled by the stone is 31.25 meters.

Hope this helps you. Plz let me know if you have any doubts.

No links please, links never work, this is science not physics
Which two claims about cats are most likely to be based on science?

A. Cats are the best animals to keep as pets.
B Whiskers help cats sense distances when hunting prey.
C. Cats spend more time sleeping than most other predators.
D. Seeing a black cat is likely to bring you bad luck.

Answers

Answer:

b and c are the answers

A is an opinion, D is a superstitious belief because they haven’t found Jesus obviously

a radioactive element has a half-life of 30 days. calculate the mass of the element that remains after 20 days if 100g of the element decays. Also, calculate the decay constant.

Answers

Explanation:

the answer is in the image above

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