Explain why when a firefighter rescues a dog that has fallen through ice on a
lake, they put their ladder on the ice first and then crawl out to the dog on the
ladder.

Answers

Answer 1

Answer:

This can spread their weight.

Explanation:

The ladder has a much larger surface area than the firefighter. Hence, his weight is spread out much more than usual, decreasing the pressure on the ice, preventing the ice from breaking/cracking.

Hope this helped!

Answer 2
The answer is: it can spread their weight

Related Questions


For brainliest !!!!!!! Do it

Answers

Answer and Explanation:

Using a = F/m, we get:

Acceleration for Road A = 480/62 = ~7.74 m/s^2

Acceleration for Road B = 240/62 = ~3.87 m/s^2

Acceleration for Road C = 600/62 = ~9.68 m/s^2

If the net force becomes higher than 600N and the mass stays constant, the acceleration will increase proportionally to how much the force increases and the acceleration will be greater than the acceleration when the force is 600N.

I hope this helps! :)

UWU plz help 50 points!!
A sprinter accelerates from the starting blocks with an acceleration of 2.5 m/s/s. They accelerate for a total of 8 seconds.
a. How far will they run while accelerating? Explain how you found your answer.
b. How fast are they moving after those 8 seconds? Explain how you found your answer

Answers

Answer:

i think its 20m for b

Explanation:

A 50 km/hr wind is blowing due northwest what are the components of the wind in the northern
and western direction?

Answers

Answer:

The components of the wind in the northern direction is approximately 35.36 km/hr

Similarly, the components of the wind in the western direction is approximately 35.36 km/hr

Explanation:

The given parameters are;

The magnitude of the speed of the wind, v = 50 km/hr

The direction of the wind = The northwest direction

Therefore;

Given that the angle between the northern and western direction = 90°

The angle in the northwestern direction, θ = 90°/2 = 45°

Therefore;

The components of the wind in the northern direction = [tex]v_y[/tex] = v × sin(θ)

Substituting the values, we have;

The components of the wind in the northern direction = [tex]v_y[/tex] = 50 × sin(45°) = 50/√2 ≈ 35.36 km/hr.

Similarly, the components of the wind in the western direction = vₓ = 50 × cos(45°) = 50/√2 ≈ 35.36 km/hr

Calculate the pressure exerted by the elephant (24000 Newtons) on the ground, assuming that
the total area of its feet is 0.8 m2.​

Answers

Answer:

3000 Pa

Explanation:

The pressure exerted by the elephant can be found by using the formula

[tex]p = \frac{f}{a} \\ [/tex]

f is the force

a is the area

From the question we have

[tex]p = \frac{2400}{0.8} \\ [/tex]

We have the final answer as

3000 Pa

Hope this helps you

a train covers half of its journey with a speed of 20 metre per second and the other of with the speed of 30 metre per second the average speed of the pain during the whole journey is​

Answers

Answer:

25 meters per second

Explanation:

2 halves so you find the average of the two by adding 20+30=50 then dividing it by number of halves, this is 2.

50/2=25

Brenda is telling a classmate that we really don’t need to worry about droughts because the supply of water on Earth is constant. Explain to Brenda and her classmate why droughts are a real concern.

Answers

Droughts are a real concern because although water is constant, water is not evenly distributed amongst every location on Earth. Many places experience a monsoon season or other extremely wet period, but many other places feature a more desert terrain and climate. In there locations, there is little to no water accessible.

Also, if a normally wet location is experiencing a drought, plants and agriculture that rely on an abundance of water could die, limiting food sources.

Answer:

the reason droughts are a real concern is because even though water is constant doesnt mean its constant everywhere. Rain sometimes cant or wont fall in certain places, to drink sea water you've got to prepare it. even if rain falls heat can cause it to not rain to much or not rain at all.

How to Calculate weight

Answers

Answer:

Weight is a measure of the force of gravity pulling down on an object. It depends on the object's mass and the acceleration due to gravity, which is 9.8 m/s2 on Earth. The formula for calculating weight is F = m × 9.8 m/s2, where F is the object's weight in Newtons (N) and m is the object's mass in kilograms.

Explanation:

We do not use water instead of mercury in a barometer.. why.​

Answers

Answer:

Required Answer:-We don't use water as Water don't expand when it came in connection of temperature.

Which body system includes protection of internal organs and blood cell formation? (4 points)

a
Integumentary system

b
Muscular system

c
Skeletal system

d
Cardiac muscular system

Answers

Answer:

The answer is C Skeletal System

I believe the answer would be C which is the skeletal system.


How fast will a bug that is going 640cm in 320 seconds travel across the
floor? *
O 2 seconds
O 2.56 cm/s
O 40,000 seconds
O 2 cm/s

Answers

Answer:

2 cm/s

Explanation:

As, 640cm/320s = 2cm/1s

Therefore, 2cm/ s

I will mark a brainluest, And good ponits, Please help me out​

Answers

Answer:

gas, liquid and the last one is opaque solid

Explanation:

Answer:

gas, liquid and the last one is opaque solid

Explanation:

Kinetic energy of 110 j and velocity of 70 m/s what is the mass

Answers

Answer:

0.04kg

Explanation:

Explanation in pics:

The formula for kinetic energy is KE = 1/2mv². So now the question asks for the mass, not KE. So we need to rearrange the formula so that we are calculating the mass. So, the formula for mass is m=KE/(1/2v²). Now we just substitute the values into the formula. Then just follow what it shows in the pic

Which of the following best describes inertia?
A. Rowing a boat
B. Moving forward in your seat when the car suddenly stops
C. A rocket taking off from the launching pad
D. A bicycle requires less force to move than a car

Answers

I think B I’m not quite sure

Betsy created the following mnemonic device to help her remember the order of the planets starting from the Sun: “Most Very Elegant Mammals Sleep Just Until Noon”. Why doesn’t her mnemonic work?
a) She has Saturn and Jupiter in the wrong order.
b) She has Mercury and Venus in the wrong order.
c) She has Uranus and Neptune in the wrong order.
d) She has Earth and Mars in the wrong order.

Answers

Answer:

A

Explanation:

The order of the planets in the solar system, starting nearest the sun and working outward is the following: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune

The specific heat capacity of oxygen is 918 J/kg °C. The specific heat capacity of water is 4181 J/kg °C. Which substance will require more energy to raise its temperature by 1°C?

Oxygen and water

Answers

Answer:

Water

Explanation:

Answer:

So, water has a specific heat of exactly 1.00 calorie per gram per °C. Because one calorie is equal to 4.18 J, it takes 4.18 J to raise the temperature of one gram of water by 1°C. In joules, water's specific heat is 4.18 J per gram per °C.

The answer is water.

If we drop two iron balls, one ball is bigger than another one, from
same height which will fall first to ground? Explain why.

Answers

Answer:

The bigger one. Ignoring air resistance, they will fall at the same speed, but the bigger one will hit first because it sticks out lower.

Explanation:

Select all the correct answers.
Which situations describe an elastic collision?
(A) Two glass marbles bounce off each other.
(B) Rodrick flops onto his sofa and sinks into the cushion.
(C) A tossed water balloon flattens when it lands on the grass.
D) A bowling ball knocks over five pins.

Answers

I believe there are two correct answers, and those answers are A and D

Please answer these three multiple choices!
Would appreciate a loooottttt today!!

Answers

Answer:

Q2 [ C ]

Q4 [ C]

Q5 [ C]

if u want the steps write a comment

A storage tank contains a liquid at depth y where y=0 when the tank is half full. liquid is withdrawn at a constant flow rate q to meet demands. the contents are resupplied at a sinusoidal rate 3qsin2(t). the equation can be written for this system as the

Answers

Answer:

y(t) = [tex]\frac{3Q}{2A} ( t - 1/2 sin2t ) - \frac{Q}{A} t + C[/tex]

Explanation:

Given data :

storage tank contains a liquid at depth ; Y

when tank is half full ;  y = 0

flow rate = q

sinusoidal rate = 3Q [tex]sin^{2} (t)[/tex]

Determine how the equation can be written for this system

solution is attached below

note ; from the question it can be seen that the surface area ( A )  is constant

3. A student fills a plastic bottle full of water. He make a hole in the bottle half-way up,
and another hole at the bottom.
(a) Does the water come faster out of the hole in the middle or the hole at the bottom?
Explain your answer.​

Answers

Answer:

It would go out the bottom hole faster.

Explanation:

It goes down the bottom hole faster because the water would get poured out the bottom before they even flipped the water bottle.

What does the big ‘2’ in 2CO2 mean?



Please help quickly i'm in science class

Answers

Answer:

It means you multiply everything after the "Big two"

Explanation:

What is the end product of mitosis?
A. Four gametes
B. Two identical nuclei
C. One complete zygote
D. A cell with one set of chromosomes

Answers

Answer:

It is B

Explanation:

I did the test

From the given options, the end product of mitosis is Two identical nuclei (option b)

Mitosis is a fundamental cellular process that occurs in somatic (non-reproductive) cells, aiming to create two genetically identical daughter cells from one parent cell. It consists of several stages: prophase, metaphase, anaphase, and telophase.

During prophase, the chromatin (a combination of DNA and proteins) condenses into visible chromosomes, and the nuclear membrane disintegrates. In the subsequent stage, metaphase, the chromosomes align at the cell's equator, ensuring each daughter cell receives an equal number of chromosomes.

Next comes anaphase, where the paired chromosomes are pulled apart and move towards opposite poles of the cell. The final phase, telophase, involves the formation of two separate nuclei around the separated chromosomes.

At the end of mitosis, the single parent cell has divided into two genetically identical daughter cells, each containing a complete set of chromosomes. These daughter cells are fully functional and capable of carrying out their specific tasks within the organism.

So, the correct Answer: B. Two identical nuclei.

To know more about mitosis here

https://brainly.com/question/32255070

#SPJ6

How much time does it take a rhino running at 40 m/s to run 250 m?​

Answers

Answer:

Rhinoceroses are odd-toed ungulates native to sub-Saharan Africa and southern Asia, though all five living species have hugely contracted in range and number due to the influence of humans. Despite their titanic, tank-like bulk, rhinos can be amazingly swift: The fastest may reach at least 50 kilometers per hour (31 mph).

Explanation:

sana makatulong

Scientists often use models to study the movement of continents. Why might scientists use a model to show this movement? A. Extremely fast movement is not easily observed directly. B. Extremely slow movement is not easily observed directly. C. Extremely complex movement is not easily observed directly. D. Extremely dangerous movement is not easily observed directly.​

Answers

Answer: the answer is B. Extremely slow movement is not easily observed directly.

Extremely slow movement is not easily observed directly.

What are Continents?

One of Earth's seven major landform divisions is the continent. The continents are Asia, Africa, North America, South America, Antarctica, Europe, and Australia, in order of largest to smallest.

Geographers typically include all the islands connected to a continent when identifying it. For instance, Japan is a country that belongs to Asia. Normally, all of the Caribbean Sea islands and Greenland are regarded as being in North America.

The combined area of the continents is roughly 148 million square kilometers (57 million square miles). Most of Earth's land surface, but not all of it, is made up of continents. Islands that are not physically a part of continents make up a minuscule amount of the overall land area.

Therefore, Extremely slow movement is not easily observed directly.

To learn more about Continents, refer to the link:

https://brainly.com/question/949445

#SPJ5

A motorcyclist drives around a bend with a 20 m radius, with a constant velocity of 3 m/s. The motorcyclist and the motorcycle have a combined mass of 50 kg. What is the motorcyclist’s centripetal acceleration?

Answers

Answer:

[tex]a=0.45\ m/s^2[/tex]

Explanation:

Given that,

The radius of a bend, r = 20 m

Velocity of motorcyclist, v = 3 m/s

The combined mass of motorcyclist and the motorcycle is 50 kg

We need to find the motorcyclist’s centripetal acceleration. The formula used to find the centripetal acceleration is given by :

[tex]a=\dfrac{v^2}{r}\\\\a=\dfrac{(3)^2}{20}\\\\a=0.45\ m/s^2[/tex]

So, the acceleration of the motorcyclist is [tex]0.45\ m/s^2[/tex].

Halp meeeeeeeeeeeeeeeeee

Answers

Answer:

1º all

2º 1

3º 2

4º the same

Explanation:

The sum of two component vectors is referred to as the
vector.
Addition
Quantitative
Subtraction
Resultant

Answers

resultant is the correct answer!

Which combustion product is a deadly gas that you cannot see or smell? O sulfur dioxide O carbon monoxide O carbon dioxide O sulfur monoxide​

Answers

Answer:

carbon monoxide

Explanation:

You place a drop of blue food coloring in a cup of cold water and another drop of food coloring in a cup of hot water. Which observation is correct and why? A The food coloring in the hot water will spread more slowly than in the cold water because water molecules move more slowly when hot. B The food coloring in the hot water will spread more quickly than in the cold water because water molecules move more quickly when hot. C The food coloring in the cold water will spread more quickly than in the hot water because water molecules move more quickly when cold. D The food coloring in the cold water will spread at the same rate at the food coloring in the hot water because water molecules at any temperature move at the same rate.

Answers

Answer:

B food coloring will move quicker in hot water because the molecules move faster when they are hot

Explanation:

SCIENCE! aaaaand my physics text book

Option B is correct:  The food coloring in the hot water will spread more quickly than in the cold water because water molecules move more quickly when hot since they have more kinetic energy.

Kinetic energy of the molecules:

According to the question, we place a drop of blue food coloring in a cup of cold water and another drop of food coloring in a cup of hot water and then observe the spreading of the blue color in both the cups.

Option B will be correct because the kinetic energy of the molecules of a gas or a liquid is directly proportional to the absolute temperature of the gas or the liquid.

High kinetic energy means that the molecules will have higher velocity, which will make it easier for any solvent to dissolve in water since it will spread faster.  

So the cup which has water at a higher temperature will have a faster spread of the food coloring.

Learn more about kinetic energy:

https://brainly.com/question/12669551?referrer=searchResults

Which of the following is most likely to produce a loud echo? Explain your answer.
Talking in a furnished, carpeted room

Singing in a tiled shower

Yelling across an open field

Answers

Number 3

plzlzllzllz mark as a brainiest!

Answer:

b

Explanation:

yes

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