Answer:
1. His heart rate is high and could indicate a problem.
2. If you understand your limitations, you are less likely to be frustrated.
3. When you learn to lift weights with the proper body mechanics, good form becomes a habit.
A.
True
4. Yes, low weight does not mean that their hearts and lungs are healthy.
5.Probably not since that system deals mostly with mobility.
Your foot has been stepped on, twice! Both times, a 100 kg person put all their weight on the heel of their shoe upon your foot. The first person was wearing flats, and their heel had an area of 60 cm2. The second person was wearing high heels, and their heel had an area of 9 cm2. What can you say about the two pressures on your foot
The pressure exerted by the shoe of the second person is 6.6 times the pressure exerted by the shoe of the first person.
Se know that pressure is defined as the ratio of force to area. A person that has a mass of 100 Kg has a weight of 100Kg × 9.8 m/s^2 = 980 N. This is the force exerted on your feet.
Now, the area of the first person's shoe = 60 cm2 or 0.006m^2 hence the pressure exerted by the first person is;
P = F/A = 980 N/0.006m^2 = 1.63 × 10^5 Nm-2
The area of the second person's shoe is 9 cm2 or 0.0009m^2 hence the pressure exerted is;
P = 980 N/ 0.0009m^2
P = 1.08 × 10^6 Nm-2
Hence, the pressure exerted by the shoe of the second person is 6.6 times the pressure exerted by the shoe of the first person.
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Define power and discuss how to determine power worth 4 points
Power is, summarized, how fast something is done using energy. More specifically, power is the amount of energy transferred or converted per unit time.
To determine power, you use the following formula:
[tex]P=\frac{W}{Δt}[/tex]
(formatting is messed up, the denominator is Δt)
P - power
W - work
Δt - elapsed time
Hope this helps, have a wonderful day :D
A kickball is kicked straight up at a speed of 22.4 m/s. How high does it go?
Answer:
25.6 meters
Explanation:
have a good day
it took David 2 seconds to lift a 5 Newton bag of toys from the floor to the top of the top shelf, which is 3 meters tall. How much power did David use?
A. 3.3 W
B. 6.1 W
C. 7.5 W
D. 14 W
Fill in the blank to balance the equation: ___ AgI + Na₂S → Ag₂ + 2NaI
Answer:2AgI + Na2S → Ag2S + 2NaI I am pretty sure this is the answer
Explanation:
If Kathy accelerates from rest in her car at 3.62 m/s? for 12.3 s, what will her final velocity be?
Answer:
15.66(s)
Explanation:
3.62+12.3
I NEED ANSWERS ASAP!!!!! Suppose you apply a force of 75 N to a 25-kg object. What will the acceleration of the object b? (Remember a=F/m)
225 m/s2
25 m/s2
3 m/s2
25N
Answer:
C. 3m/s^2
Explanation:
As galáxias são maiores do que os enxames de estrelas?
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Responder \;\;a}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
As galáxias são geralmente maiores do que os aglomerados de estrelas. Como disse Geller ~ As galáxias são como as cidades em que vivem os aglomerados de estrelas. As galáxias podem ter cerca de milhares ou mais aglomerados de estrelas ~
I hope it helps ~
1. The longest banana split ever made was 8.04 km long (needless to say, more than one banana
was used). If an archer were to shoot an arrow horizontally from the top of Mount Everest, which
is located 8848 m above sea level, would the arrow's horizontal displacement be larger than 8.04
km? Assume that the arrow cannot be shot faster than 100.0 m/s, that there is no air resistance,
and that the arrow lands at sea level.
Answer: If an archer were to shoot an arrow horizontally from the top of Mount Everest, which is located 8848 m above sea level, would the arrow's horizontal
Explanation:
A block weighing 30kg is moved at a constant speed over a horizontal surface by a force of 100 N applied parallel
to the surface
What does the "constant speed" tell you about the forces acting on the block?
Draw body diagram for the block.
[
A giant rat is running at +4 m/s. After 2 seconds, his velocity is +20 m/s. What is his acceleration?
Answer:
8m/s²
Explanation:
the formula to find acceleration is: a=v-u/t
v refers to the final velocity
u refers to the initial velocity
so, a=20-4/2
a= 8m/s²
Umm please help?? Please right it on your own words so I don’t get in trouble.
PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!
Nadine knows that she should do some balance training, but she does not know much about it. She already has a full exercise schedule and is worried that she cannot fit in another intense workout session. What is the BEST advice for Nadine?
A.
She can add a few simple exercises to her regular routine.
B.
She really does not need to worry about it if she is stretching.
C.
She won’t get much out of her other workouts if balance isn’t addressed.
D.
She should find at least half an hour to go to the gym and work on balance.
PLEASE NO LINKS
I'm not that sure but I think the answer is D.
Cause without balance most exercises will not be easy to do.
But I suggest u wait for another person to answer.
She already has a full exercise schedule and is worried that she cannot fit in another intense workout session. She should find at least half an hour to go to the gym and work on balance. Thus option D is correct.
What are the benefits of doing exercise ?physical activity can lead to improve the muscle strength workout on maintenance oxygen and vitamins for tissues and allows the cardiovascular device to work more efficiently, when the heart and lung fitness enhance, energy will be enhanced.
The specificity, progression, overload, variation, and reversibility practicing often and always is so vital if you need to improve your performance.
The training help in development in fitness application are overload, progression, and specificity, increase the repetitions, a quantity of weight, or length of time in an exercise you are familiar with, you are making use of overload.
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Write the complete chemical symbol for the ion with 29 protons, 27 electrons,
and 31 neutrons.
Answer: Cu+2
Explanation:
A train travel south at the
speed of 120 km/h in 1. 6 hours
Calculate it's displacement
Velocity: 120 miles/hr
Now Distance= Speed × Time
Now Velocity and speed have the same magnitude. Velocity being a vector quantity has a definite direction. Whereas speed is a scalar quantity,it indicates only the magnitude an doesn't define any direction.
Hence Distance = Velocity x time
Distance = 3.5 × 120 = 420 miles
[tex]\\ \sf\longmapsto Displacement=Speed(Velocity)\times Time[/tex]
[tex]\\ \sf\longmapsto Displacement=120(1.6)[/tex]
[tex]\\ \sf\longmapsto Displacement=192km[/tex]
I =
Q = 240 C
t= 300 s
How do the molecules move in the frozen lake?
1. They don't move
2. In place
3. Away from each other
4. Around each other
pls help me i give brainliest
Answer:
a
Explanation:
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does cool air have more or less air pressure than warm air
Answer:
cold
Explanation:
cold air is more dense than warm air, therefore it has a higher pressure
describe the motion of a baseball from pitch to being caught in the outfield, use as many concepts as u can
Answer:
Image result for describe the motion of a baseball from pitch to being caught in the outfield, use as many concepts as u can
The rotation of the baseball in combination with the way the seam is spinning through the air causes the ball to move in different patterns. A few common pitches are the fastball, curve ball, slider, and the screwball. Each of these pitches has a different spin because of how the player grips the ball.
Explanation:
Answer:
When a baseball is pitched, hit and flies in the air, one or more of the physical principles formulated over 300 years ago by Sir Isaac Newton act on it. Folklore tells how the mathematician and physicist first realized the law of gravity while observing a falling apple. Had Newton watched a baseball game instead, he might have formulated all three laws of motion by the seventh-inning stretch.
Be safe! tell me if im wrong pls. hope it helps you :D
-------------------------------is the time measuring device in which periodic motion is produced by mechanical winding.
Answer:
Pendulum ClockExplanation:
Explanation ---> Pendulum Clock is a time measuring device which was possible by the discovery of oscillation in which to and fro motion is present.A roller coaster is at the top of a 102 m hill and a mass of 120 kg. The coaster (at this
moment) has
energy.
[tex]\\ \sf\longmapsto P.E=mgh[/tex]
P E means potential energy[tex]\\ \sf\longmapsto P.E=102(120)(10)[/tex]
[tex]\\ \sf\longmapsto P.E=122400J[/tex]
Shortlest wavelength?
A flute plays a note with a frequency of 266 Hz. What is the speed of sound if the wavelength is 1.3 m? 102 m/s 205 m/s 346 m/s 692 m/s
Answer:
the speed of sound if the wavelength is 346 m/s
When a flute plays note with a frequency of 266 Hz and the wavelength is 1.3 m then speed of sound will be 346 m/s. Hence option C is correct.
What is Speed ?Speed is a rate of change of distance with respect to time. i.e. v=dx÷dt. Speed can also be defined as distance over time i.e. speed= distance ÷ time it is denoted by v and its SI unit is m/s. it is a scalar quantity. Speed shows how much distance can be traveled in unit time.
To find dimension for speed is, from formula
Speed = Distance ÷ Time
Dimension for distance is [L¹] ,
Dimension for Time is [T¹],
Dividing dimension of distance by dimension of time gives,
[L¹] ÷ [T¹] = [L¹T⁻¹]
Dimension for speed is [L¹T⁻¹].
For a any wave, there is relation between speed c, wavelength λ and frequency ν which is given by,
c = λν
Given,
wavelength = 1.3 m
frequency = 266 Hz
Speed = ?
Putting all values in the equation,
Speed = 1.3 m× 266 Hz = 345.8 m/s ≅ 346 m/s
Hence option C is correct.
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What are the four things that are dependent on the size of an electromagnetic force?
The four things that are dependent on the size of an electromagnetic force are magnitude of force, distance, current and the magnetic strength.
What is electromagnetic force?An electromagnetic force is generated from a strong electric field associated with a magnetic field. A looping current generates a magnetic field around it where, the direction of magnetic field lines are perpendicular to the electric field.
The strength of electromagnetic field definitely depends on the wire size, number of turnings, material of coli and its magnetic strength. There are both electromagnetic force of attraction and repulsion as well.
The things which are dependent on the electromagnetic force are the distance over it can act, the loop current, magnetic strength and its magnitude of magnetic field.
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what's the answer? and is my answer correct?
Answer:
it's correct
Explanation:
answer is 3.6
What is the electric current if a resistance of 100 Q and voltage of 12.0 V?
A.0.120 A
B.9.00 A
C.12.0 A
D.25.0 A
Answer:
letter A
Explanation:
yan po tamang sagot
What is the period of an object that makes 20 revolutions a minute?
Is it 4 seconds or is it 5 seconds or is it 2seconds or is it 3 seconds?
Answer: 3 seconds
Explanation: I hope this helps!
Why does plasma challenge what we know about matter? How does it confirm what we already know?
Being made of charged particles, plasmas can do things gases cannot, like conduct electricity. And since moving charges make magnetic fields, plasmas also can have them. In an ordinary gas, all the particles will behave roughly the same way. Auroras, lightning, and welding arcs are also plasmas; plasmas exist in neon and fluorescent tubes, in the crystal structure of metallic solids, and in many other phenomena and objects. The Earth itself is immersed in a tenuous plasma called the solar wind and is surrounded by a dense plasma called the ionosphere.
Plasma is a type of matter in which many electrons freely roam around the nuclei of atoms.
What is plasma?Although plasma is commonly thought of as a subset of gases, the two states behave very differently. Plasmas, like gases, have no definite shape or volume and are denser than solids or liquids.
Plasma is a sort of matter in which numerous electrons freely roam around the nuclei of atoms.
Plasma has been described as the fourth state of matter, alongside solid, liquid, and gas.
Normally, electrons in a solid, liquid, or gaseous sample of matter remain bound to the same nucleus.
Thus, plasma is considered a distinct phase because it does not conform to the standard descriptions and physical laws that are used to describe the standard three states of matter.
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In a blinding blizzard, a reindeer trudges 310.0 m 55° east of south across the tundra. How far south does the reindeer move? How far east does the reindeer move?
Please show work.
The characteristic of the displacement is a vector allows to find the results for the components of the displacement are;
It moves to the south distance is: y = 177.8 m It moved to the east distance is: x = 253.9 m
The displacement is a vector quantity, therefore it has modulus and direction, see attached for a diagram.
The reference system the West - East axis coincides with the x axis and the South - North axis with the y axis.
Let's use trigonometry to find its components.
cos 55 = [tex]\frac{y}{d}[/tex]
sin 55 = [tex]\frac{x}{d}[/tex]
y = d cos 55
x = d sin 55
let's calculate
y = 310 cos 55
x = 310 sin 55
y = 177.8 m
x = 253.9 m
In conclusion using the characteristics of the displacement is a vector we can find the components of the displacement are;
It moves to the south distance is y = 177.8 m It moved to the east distance is x = 253.9 m
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