why floating is important in swimming?​

Answers

Answer 1

Answer:

floating is important in swimming because if you are ever in a bad position possibly in the ocean and get tired of swimming you can float.

Explanation:


Related Questions

A major league pitcher can throw a baseball with a kinetic energy of 150 J. How much work must the pitcher do to the ball to give it that much KE?


A.) 150 J

B.) 0 J

C.) can't tell without knowing the mass of the ball

D.) 75 J

Answers

Answer:

A= 150 J

Explanation:

Kinetic energy is the energy of an object in motion.

The formula for kinetic energy is ;

K.E = 1/2 * m *v²  where m is mass and v is velocity

Work done is equal to change in kinetic energy

W= Δ K.E

Given that K.E = 150 J

Taking that the ball was stationary before it was thrown, this makes its initial kinetic energy to be 0 J so the work done will be

W=  Δ K.E

W= 150 - 0

W= 150 J

Materials such as rubber, plastics, and glass do not carry electrical currents and
are known as

Answers

i’m pretty sure it’s an insulator

Ifa truck starts from rest and it has acceleration of 4 m/s for 5 second
calculate its final velocity. What will be the distance travelled by the track
during the time interval?

Answers

Answer:

Distance 50m

final velocity 20ms^-1

[tex]s = ut + \frac{1}{2} a {t}^{2} \\ = 0 \times t + \frac{1}{2} \times 4 \times {5}^{2} = 50m[/tex]

[tex]v = u + at \\ v = 0 + 4 \times 5 \\ v = 20ms^{ - 1} [/tex]

NEED IT ASAP!!!!!!!!!!!!!!!!!!!!!

Answers

A, if this is not correct, please choose D.

Petter performed an experiment to test which of the three compounds his teacher game him was an ionic compound. Which compound (A, B, or C) is most likely an ionic compound?

Answers

B because it conducts electricity which means it contains a metal hope this helps

A 64 kg swimmer jumps, with a velocity of 4.2 m/s, off the front of a 25 kg kayak when the kayak is moving forward at a velocity of 3.2 m/s. What is the velocity of the kayak after the swimmer jumps off

Answers

Answer:

3.88m/s

Explanation:

Using the law of conservation of momentum

m1u1+m2u2 = (m1+m2)v

m1 and m2 are the masses

u1 and 2 are the initial velocities

v is the final velocity

Given

m1 = 64kg

u1 = 4.2m/s

m2 = 25kg

u2 = 3.2m/s

Required

Final velocity v

Substitute the given values into the formula

64(4.2)+25(3.2) = (65+25)v

268.8+80 = 90v

348.8 = 90v

v = 348.8/90

v = 3.88m/s

Hence the velocity of the kayak after the swimmer jumps off is 3.88m/s

A .5kg ball is tied to a 1 meter long string and swung in a vertical circle at a velocity of 4 m/s. Find the tension in the string at:
A-Top of the Circle
B-Bottom of the Circle

Answers

Answer:

A-Top of the Circle

Please mark me branilist

ccording to Newton's Second Law, what effect will doubling the mass of an object have?

Answers

As the mass of an object is increased, the acceleration of the object is decreased.

please help answer worth 15!!

Answers

Answer:

Correct answers are B and C.

Explanation:

The line segment which exhibits a positive uniform accelaration if and only if [tex]\Delta v > 0[/tex] for [tex]\Delta t > 0[/tex]. According to this statement, the line segments B and C exhibits positive uniform accelerations, whereas line segments A and D have a constant velocity and line segments E exhibits a negative uniform acceleration.

Hence, correct answers are B and C.

These data tables show the distance of various galaxies from Earth in millions of light-years (Mly) at different times. Which table supports the theory of expansion in the formation of the universe?

Answers

Answer: it’s b

Explanation:

I had two attempts to do the test first I picked c but I did it again it’s b .

Many people experiment with a gateway drug.
A. before they try other drugs.
B. after they've tried other drugs.
C. only once.

Answers

B. After they’ve tried other drugs.

Answer:B

Explanation:onec thwy tried others

What group of the periodic table is this atom in?

Answers

Answer:

Group 3

Explanation:

In groups moving from top to bottom in a group, valency remains same because number of valence electron remains same.

eg . valency of first group elements = 1

valency of second group = 2

valency of third group = 3

Hope it is useful

A sound wave traveling through dry air has a frequency of 16 Hz, a wavelength of 22 m, and a speed of 350 m/s. When the sound wave passes through a cloud of nitrous oxide, its wavelength changes to 16 m, while its frequency remains the same. What is its new speed? (The equation for the speed of a wave is v= f x 1.)
A. 350 m/s
B. 16 m/s
C. 5,600 m/s
D. 256 m/s​

It's D

Answers

Answer:

D. 256 m/s

Explanation:

[tex]f[/tex] = Frequency of the wave = [tex]16\ \text{Hz}[/tex]

[tex]\lambda[/tex] = Wavelength = [tex]16\ \text{m}[/tex]

Speed of a wave is given by

[tex]v=f\lambda[/tex]

[tex]\Rightarrow v=16\times 16[/tex]

[tex]\Rightarrow v=256\ \text{m/s}[/tex]

The speed of the wave as it passes through the cloud of nitrous oxide is [tex]256\ \text{m/s}[/tex].

Answer:

D. 256 m/s​

Explanation:

d. d as in dog

Which factor should change when comparing the boiling times of the liquids?
A. The surface area of the boiling vessel
B. The type of liquid inside the boiling vessel
C. The original temperature of the boiling vessel
D. The volume of liquid inside the boiling vessel

Answers

Answer:

B

Explanation:

cause it be like that

B. The type of liquid inside the boiling vessel.

Which liquid is used in boiling point?

Paraffin oil is used for boiling factor willpower as it has a very excessive boiling factor and so it could be used to hold a high temperature within the boiling factor and melting factor equipment without lack of the substance.

Boiling is the process by which a liquid will become a vapor whilst it's miles heated to its boiling point. The alternative from a liquid segment to a gaseous segment occurs while the vapor pressure of the liquid is identical to the atmospheric stress exerted on the liquid.

Learn more about a boiling point here: https://brainly.com/question/40140

#SPJ2

Which correctly describes how the energy of a wave on the electromagnetic
spectrum depends on wavelength and frequency?
O A. Energy decreases with decreasing wavelength and decreasing
frequency
B. Energy increases with decreasing wavelength and decreasing
frequency
O C. Energy increases with decreasing wavelength and increasing
frequency
D. Energy decreases with increasing wavelength and increasing
frequency

Answers

Answer:

C. Energy increases with decreasing wavelength and increasing frequency

Explanation:

Pleaseeeee help me with b, c, and d. There are no angles.

Answers

Answer:

a. 150 J

b. 150 J

c. 0 J

d. 0 J

Explanation:

The given parameters are;

The horizontal force with which the man pulls the canister, F = 50 N

The distance he moves the vacuum cleaner, d = 3.0 m

a. Work done, W = Force applied, F × Distance moved by the force, d

Therefore, for the work done by the 50 N force on the canister, we have;

W = 50 N × 3.0 m = 150 N·m = 150 J

b. Given that he pulls the canister at a constant speed, we have;

The acceleration of the canister, a = 0 m/s²

Therefore, the net force on the canister, [tex]F_{NET}[/tex] = F - [tex]F_{Friction}[/tex]  = m × a

Where;

m = The mass of the canister

a = The acceleration of the canister

F = The applied force = 50 N

[tex]F_{Friction}[/tex] = The force of friction

∴ [tex]F_{NET}[/tex] = m × a = m × 0 m/s² = 0 N

Therefore;

[tex]F_{NET}[/tex] =  F - [tex]F_{Friction}[/tex] = 0 N

From which we have;

F = [tex]F_{Friction}[/tex] = 50 N (The applied force, F is equal to the force of friction,

The work done by friction = The force of friction × The distance in which the force of friction acts

∴ The work done by friction = [tex]F_{Friction}[/tex] × d - 50 N × 3.0 m = 150 J

The work done by friction = 150 J

c. The normal force, N acts perpendicular to the force of friction

The distance the canister moves in the perpendicular direction, [tex]d_p[/tex] = 0 m

∴ The work done by the normal direction = N × [tex]d_p[/tex] = N × 0 m = 0 J

The work done by the normal direction = 0 J

d. The vacuum weight, W, acts on the same line as the normal force but in the opposite direction to the normal force, N

Therefore, the weight, W, acts perpendicular to the line of motion of canister

The distance the canister moves in the direction of the weight, [tex]d_{wieght}[/tex] = 0 m

Therefore, the work done by the weight = W × [tex]d_{wieght}[/tex] = W × 0 m = 0 J

The work done by the weight = 0 J

if a snail moves 6.5in/min, how many miles per hour does the snail travel?​

Answers

Answer:

Unit Conversion

6.5in/min× 1ft/12in× 1 mile/5280ft= 0.001231 m/min0.001231 m/min× 60 min/1hr= 0.0738 miles/hr

Respostas
2 M
3 M
5 M
7 M
8 M

Answers

8M.
Because it would acumúlate to it

NEWTONS SECOND LAW LAB REPORT

Answers

Answer:

Newton's second law states that the acceleration of an object is directly related to the net force and inversely related to its mass. Acceleration of an object depends on two things, force and mass.

Explanation:

here this may help.

What is the main idea of this text of "Phillis Wheatley"

Answers

Answer:

The main idea of the text is to tell you how Phillis wheatley grew up and what the person life was like

Which example provides a complete scientific description of an object in motion?

Answers

The explantion to it is c

the gravitational potential energy of an object is due to
a .its mass
b .its acceleration due to gravity
c. its height above the earth' s surface
d .all of these​

Answers

d. all of these

look at the picture to know from where we get this law with application on it

A 68-kg skydiver has a speed of 52 m/s at an altitude of 670 m above the

ground. Determine the kinetic energy possessed by the skydiver, KE =

1/2mv^2*

Answers

Answer:

91936J

Explanation:

We know that kinetic energy= 1/2 mv^2

M= mass = 68 Kg

v= velocity= 52 m/s

KE=1/2 × 68 × (52)^2

KE= 1/2 × 68 × 2704

KE= 91936J

The capacitance of each capacitor is 1μF. Find the total capacitance

Answers

* don’t use this I need points* 180

What is the momentum of a 31.2 kg object traveling at a velocity of 2.1 m/s?

Answers

Answer:

p = 65.52 kg m/s

Explanation:

p = m × v

p = 31.2 × 2.1

p = 65.52 kg m/s

what keeps both the cars pressed down on the road? ​

Answers

Answer:

Gravity

Explanation:

Timed! I would really appreciate some help! thank you!
Andy runs for 30 minutes at a speed of 10km/h. How far did he run? (Hint: remember to convert the minutes to hours before calculating distance.) *

3km
5km
150km

Answers

Answer:

x = 5[km]

Explanation:

We must convert the time from minutes to hours.

[tex]t=30[min]*\frac{1h}{60min}= 0.5[h]\\[/tex]

We know that speed is defined as the relationship between space and time.

[tex]v=x/t[/tex]

where:

x = space [m]

t = time = 0.5 [h]

v = velocity [m/s]

Now replacing:

[tex]x = 10[\frac{km}{h} ]*0.5[h]\\x=5[km][/tex]

Explain the answer for the below Question

Answers

The answer is 60m because to calculate the distance travelled in a velocity-time graph, you must calculate the area underneath the line.

drawing of a ray diagram showing how image is formed between principal focus and centre of curvature.​

Answers

Answer:

When the object is placed between centre of curvature and principal focus of a concave mirror the image formed is beyond C as shown in the figure and it is real, inverted and magnified.

solution

When a car is going at a constant velocity down the freeway, is the net force zero or not zero assuming no friction?

Answers

Answer:

Zero

Explanation:

The net force acting on an object moving with constant velocity is zero. This is an accordance with the Newton's first law of motion.

Newton's first law of motion states that a body will continue in its state of rest or constant motion unless it is acted upon by an external force.

Since this body is moving with uniform motion, it is not accelerating. When a body is acceleration, the net force on it is not zero.

But this one is moving with uniform motion. The net force on the body is balanced and zero.

Other Questions
PLEASE HELP QUICK !!! Please help me with this final math question asap. I will mark brainliest Thank you so much! Question 5/5 Mr. Smith has 5 1/2 acres of land for sale. He divided the land into 1/2-Acre lots. How many lots are for sale? Coffee costs $1.75 a pound. How much would 3.2 pounds of coffee cost? PLS HELPPPP I WILL GIVE BRAINLIEST 6(4-1)? - 5(2) =ILL MAKE BRAINLYIST And therefore if any two men desire the same thing, which nevertheless they cannot both enjoy, they become enemies; and in the way to their End, . . . endeavour to destroy, or subdue one an other. [Hence, life in the state of nature is] . . . nasty, brutish, and short.Hobbes calls life in the state of nature nasty, brutish, and short, becausepeople are powerless and weak. government is overbearing and abusive. government is powerless and useless.people must constantly fight enemies. ___ organisms only need one cycle of cell division to create offspring Which expression is equivalent to (7^3)^-2 Find the slope of each line why physiological can occur during hibernation? What is the correct amino acid sequence for the given DNA sequence? TACACGTTCACCA) methionine, valine, lysine, tryptophanB) methionine, cysteine, lysine, tryptophanC) methionine, cysteine, arginine, serineD) serine, valine, lysine, stop Mr Rumpole believes that the mean income of lawyers is now more than $65 thousand per year. Which is the correct set of hypotheses to test this belief? Question 25 (5 points)Which version of the sentence is most concise? (5 points)aObOdThis paper will be about the fact that water conservation starts at home.Water conservation at home is as important as major policy changes.The reasons water conservation is important are actually quite significant.Water conservation is important due to the fact that it affects us all. Sun rays reaching earth is that conduction, convection or radiation Which expression is equivalent to (81x4y16)12 for all positive values of x and y?40.5x4y16 I WILL GIVE U BRAINLIEST IF UR CORRECTWhich of the following is always a result of a chemical reaction?Hint: The questions says always.. only one best answerA. BubblesB. Fire or smokeC. Temperature changeD. A new substance Selena earns $13.15 for every hour she works at the bakery. She already has $14 in her purse. Use x for the number of hours she works. By using the equation below complete the square, write the equation of the circle in standard form from the following equation. Then determine the center and radius ofa circle. 10y + x2 = -18+ 5x - y2 Reflexionamos sobre aprendizajes para autoevaluarnos Los aprendizajes que hemos realizado con facilidad, qu es aprendizajes que nos han costado mucho desarrollar pero lo logramos, los aprendizajes que an nos faltan reforzar