Un equipo de dos corredores ganó una carrera de automóviles a campo traviesa. Casa conductor de estuvo al volante la mitad del recorrido. Si uno corrió a 60 km/h en promedio y el otro a 20 km/h, también en promedio, ¿Cuál fue la rapidez media general si la distancia total recorrida fue de 600km?
Answer:
La rapidez media general fue 30 km/h.
Explanation:
Para encontar la rapidez media debemos hallar el tiempo que tarda cada uno en recorrer 300 km (cad uno recorre la mitad del recorrido total que es 600m):
[tex] t_{1} = \frac{1 h}{60 km}*300 km = 5 h [/tex]
[tex] t_{2} = \frac{1 h}{20 km}*300 km = 15 h [/tex]
[tex]t_{T} = t_{1} + t_{2} = 5 h + 15 h = 20 h[/tex]
Entonces, la rapidez media es:
[tex]v = \frac{\Delta x}{\Delta t} = \frac{600 km}{20 h} = 30 km/h[/tex]
Por lo tanto, la rapidez media general fue 30 km/h.
Espero que te sea de utilidad!
Why are body senses in psychology?
Answer: Body senses provide you with information about the position of your body in respect to your environment. The four main ones are touch, pain, vestibular, and kinesthesis.
More in details:
Our senses allow us to experience the world we live in, and are one of the key components of consciousness. ... This is why the study of our senses, or sensation, is considered to be such an important area of psychology, because it is one of the key components that makes consciousness possible.
A car is accelerating to the right. In which direction is the applied force?
right
left
up
down
Answer:
Left
Explanation:
The force is applied opposite of the acceleration.
How does the potential and kinetic energy change as the sled moves down the slope?
Answer:
KE increases and PE decreases.
Explanation:
First, note that the formula for kinetic energy is KE = (1/2)mv^2 where m is the mass and v is the velocity and the formula for potential energy is PE = mgh where h is the height it is at. Since mass and the acceleration provided by gravity doesn’t change, we can disclude that our conclusion. We know that the height (h) and velocity (v) does change, so let’s look at that. As you continue down the slope, you accelerate due to gravity. Thus, velocity increases and KE increases. As you continue down the slope, you get closer to the ground, hence h decreases and PE decreases.
I hope this helped! :)
Read the passage. Then write a paragraph that explains why the two ecosystems have such different kinds of plants. Use the terms biotic factor, abiotic factor , and limiting factor in your explanation.
Answer:search this up but put quizzlet at the end it should be there
Explanation:
Which of the following most likely causes Earth's inner core to be a solid?
A The pressure in the core is very high
B) The metals in the core are very heavy
The temperature of the core is very low
D
The chemicals in the core are very reactive
I NEED HELP QUICKLY THIS IS DUE BY 12:00 PM tonight
The SI unit of measurement for mass is the
Answer:
m/s is answer for your questions
how can i stop loveing you if yo keep saying the things i want to hear
Answer:
....
Explanation:
Answer:
What do you mean.
Explanation:
how much time will it take to perform 440 joule of work at a rare of 11 w?
Answer:
40sec
Explanation:
Data
Work = 440 J
Power= 11watt
time = ?
Power = work done/time
===> time = work done/power
= 440/11
= 40sec
The table shows the diameter of four different types of electric wire....
Answer:
it is the fourth one!
Explanation:
i just did it on ap3x :)
The resistance of a wire which is used to power clothes dryer rank third as the area and diameter of wire is inversely proportional to the resistance of the wire. Thus, the correct option is A.
What is Electrical resistance?Electrical resistance is a measure of the opposition or friction to the current flow in an electrical circuit. Resistance is measured in the unit of ohms, that is symbolized by omega (Ω). Resistance of an electrical wire can be calculated by the formula:
R = (ρ×L)/A
where, R = Resistance of the wire,
ρ = Resistivity or specific resistance,
L = length of the electrical length,
A = Cross-sectional area of the electrical wire.
The resistance of a electrical conductor is dependent on the following factors including the cross-sectional area of the conductor, length of the conductor and the material of the electrical conductor.
Therefore, the correct option is A.
Learn more about Electric wire here:
https://brainly.com/question/14715608
#SPJ2
At which point is cool air circulating beneath warm air?
A. 1
B. 2
C. 3
D. 4
Answer:
The answer is A
Explanation:
I took the quiz
The point where the cool air circulated beneath warm air is option A. 1
Cool air circulation:Cold air should be entered from the left and movement should be down. It can't be clouded with the rain. The entering of the warm air should not be from the right and moved up. Neither the warm air should be entered from the top left and then moved down with respect to the clouds. In this way, the point of the cool air circulation should be one.
Learn more about the air here: https://brainly.com/question/24545963
In calisthenics, the resistance is ultimately provided by __________. A. free weights B. springs and elastic bands C. gravity D. weight machines
When practicing calisthenics, the athlete's body is the only element that offers resistance. Thus, the resistance is ultimately provided by _gravity_. Option C is correct.
---------------------
Calisthenic is a physical discipline that is based only on the use of body weight.
It is a training system with physical activities that do not require any external element (weights, balls, cord). Gravity is the only force that exerts resistance.
This discipline develops strength, precision, and movement coordination, which are fundamental to increasing the difficulty of the exercises.
The athlete's body is the only element that offers resistance. Thus, the resistance is ultimately provided by _gravity_.
------------------------------
You can learn more about Calisthenic at
https://brainly.com/question/2041419
Answer:
C
Explanation:
Kathy had a heavy metal ball and Rich had a light wooden ball they drop the balls from the same height. they were surprised to discover that the two balls reach the ground at the same time. this is what they said after the balls landed select who you agree with. Kathy said ""the force of gravity must be acting the same on both balls."" Rich said ""I don’t agree the metal ball weighs more so the force of gravity is more on the heavier ball.""explain why you agree with who you choose
Answer: I scored a 9/10
Explanation:
I agree with Kathy gravity must be acting the same on both balls just because one ball is heavier doesn’t mean they will hit different times if the wooden ball was drop closer to the ground then the wooden ball would hit the ground first
7. If 8 million kg of water flows over Niagara Falls each second, calculate the power available at the bottom of the falls.
Answer:
The power will be "3.92×10⁹ Watts". A further explanation is given below.
Explanation:
The given values as per the question,
Rate,
= 8 million kg
Distance,
= 50 m
Gravity,
= 9.8 m/s²
As we know,
The power will be:
⇒ [tex]Power = Rate\times Distance\times Gravity[/tex]
On putting the values, we get
⇒ [tex]= 8\times 10^6\times 50\times 9.8[/tex]
⇒ [tex]=3.92\times 10^9 \ Watts[/tex]
Which statement describes how this diagram could be changed so that it shows an electromagnet? so Battery Ammeter
A. Add a magnetic metal core inside the coil of wire
B. Add magnetic field lines around the wire coil.
C. Place a second battery between the ammeter and the wire coll.
D. Move the ammeter to the other side of the wire coil.
Answer:
It’s A
Explanation:
I just took the test
Answer:
Explanation:a
what is the process where energy releases within the sun
Answer:
nuclear fusion
Explanation:
The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun's core cause nuclei to separate from their electrons
Answer:
Nuclear fusion
Explanation:
PICK ME AS BRAINLIEST
Name two offensive strategies that can be utilized in the game of baseball
How can we reduce friction
Answer:
Smoother surfaces, and less contact between objects.
Explanation:
Smoother surfaces create less friction and drag among the object pulled, so we definitely need those kinds of surfaces to reduce friction.
How much longer would it take to travel a
distance of 600 km at a speed of 50 kmhr-1
than it would at a speed of 60 kmhr-1?
Explanation:
Time=distance/speed
=600/50
=12
=600/60=10
==12-10=2 hours
Calcula cuantos protones debes reunir para que su masa sea igual a 1kg
Answer:
Para que la masa del proton sea 1 kg se requieren alrededor de 6x10²⁶ protones.
Explanation:
Sabiendo que la masa del proton es:
[tex]m_{p} = 1,67 \cdot 10^{-27} kg[/tex]
Entonces para que la masa sea 1 kg tenemos:
[tex] 1 kg = N*m_{p} [/tex]
En donde N es el número de protones.
[tex]N = \frac{1 kg}{1,67 \cdot 10^{-27} kg} = 6 \cdot 10^{26}[/tex]
Por lo tanto, para que la masa del proton sea 1 kg se requieren alrededor de 6x10²⁶ protones.
Espero que te sea de utilidad!
Find the weight of a 65 kg person
Answer:
650N
Explanation:
we're using w=m×g
and gravity on earth is 10N
so it'll be
W=65 (being the mass) × 10
=650N
(explanation for a)
2 He Helium Which list gives the correct numbers of subatomic particles for a neutral atom of helium? O A. Two protons, two neutrons, four electrons B. Four protons, four neutrons, four electrons O c. Two protons, four neutrons, six electrons O D. Two protons, two neutrons, two electrons
Answer:
D
Explanation:
Two protons, two Neutrons, two electrons
a 5 kg rock is lifted 3m find amount of work done
a= 98 J
Answer:
How long would it take a machine to do 13,000 joules of work if the power rating ... An object gains 15 joules of potential energy as it is lifted vertically 5.0 meters. ... As the time required to do a given quantity of work decreases, the power ... How much work is being done to the system by the person of the sled moves 10 m?
How do the echoes of the sounds of animals help them?
Answer:
Echolocating animals emit calls out to the environment and listen to the echoes of those calls that return from various objects near them. They use these echoes to locate and identify the objects. Echolocation is used for navigation, foraging, and hunting in various environments.
what makes an molecule compound
Explanation:
A molecule is a group two or more atoms held together by chemical bonds.
How would the future of the universe differ from the past?
WILL MARK THE HIGHEST
What elemental trend exists as we move down a column on the periodic table?
Answer:DOWN a Group: Atomic radius INCREASES as you go DOWN a Group because each successive Period (row) has an additional occupied energy level. If you visualize the not 100% accurate but still useful Bohr model of the atom, you can think of it this way: each time you drop down a row, you add a "ring." ACROSS a Period: Atomic radius DECREASES as you go ACROSS a Period because the net nuclear charge increases (Huh?). Remember, it's the protons (+) in the nucleus that pull on or attract the electrons in the orbitals. Across a Period you are adding more and more protons pulling on electrons occupying the same orbitals. The overall effect is more pulling power in the same basic space. This draws the electrons in closer, making the overall atomic radius smaller at the right side of a Period.
Ionization Energy:
DOWN a Group: Ionization energy DECREASES as you go DOWN a Group because the farther the valence electrons are from the nucleus (pulling power of the protons) the less energy it costs another atom to steal them. ACROSS a Period: Ionization energy INCREASES as you go ACROSS a Period because atoms are getting ever closer to that magic "octet" rule for stability via the Noble Gas configuration. In plain speak - your frequent buyer punch card gets one step closer to the freebie each time you move closer to the right of the Periodic Table so you guard those punches more carefully. The atomic radius is getting smaller, too, so those protons do a great job of holding on tighter.
Electron Affinity:
Electron affinity is a bit outside the scope of this class so I'm not going to get into it too deeply, other than to point out the general trend.
DOWN a Group: Electron Affinity DECREASES (a tiny bit) as you go DOWN a Group because elements become slightly less attractive toward electrons. Father from the pull of those protons, remember? ACROSS a Period: Electron Affinity INCREASES as you go ACROSS a Period because generally speaking (and remember, exclude the Noble Gases here) elements toward the right of the Periodic Table give off a great deal of energy when they gaining electrons to become more stable.
Electronegativity:
DOWN a Group: Electronegativity DECREASES as you go DOWN a Group because the valence electrons are increasingly farther away from the attraction of the protons in the nucleus. Less pull, less "desire" to grab other electrons. ACROSS a Period: Electronegativity INCREASES as you go ACROSS a Period because the number of protons (+ charges) in the nucleus increases. More protons in the nucleus means electrons are more strongly attracted to the nucleus.
Chemical Reactivity:
METALS
DOWN a Group: In METALS reactivity INCREASES as you go DOWN a Group because the farther down a Group of metals you go, the easier it is for electrons to be given or taken away, resulting in higher reactivity. ACROSS a Period: In METALS reactivity DECREASES as you go ACROSS a Period because though they still want to give away valence electrons they have more of them to get rid of, which requires more energy. Not as easy to blow off a little steam!
I can't help it, I just love this video on reactivity (however embellished the reactions) down the Alkali Metals. Top Gear (BBC) fans will recognize Richard "Hamster" Hammond as the narrator here. Enjoy!
Explanation:
Which part of an organism is preserved in cast and mild fossils
Answer:
Isn't it technically your brain? Because it's always in your skull and when you're younger you have cracks in your skull but as you grow, your skull fossilizes to mend those cracks. IT FOSSILIZES!
Explanation:
( WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST AND SHOWS WORK) A car weighs 15300 N. What is its mass?
Answer:
Mass, m = 1561.23kg
Explanation:
Given the following data;
Weight = 15300N
We know that acceleration due to gravity is equal to 9.8m/s²
To find mass;
Weight can be defined as the force acting on a body or an object as a result of gravity.
Mathematically, the weight of an object is given by the formula;
[tex] Weight, W = mg[/tex]
Where;
m represents the mass of an object measured in kilograms. g is the acceleration due to gravity measured in meters per seconds square.Substituting into the equation, we have;
[tex] 15300 = m*9.8[/tex]
[tex] m = \frac {15300}{9.8}[/tex]
Mass, m = 1561.23 Kg
Therefore, the mass of the car is 1561.23 kilograms.
Which statement BEST describes the process of playing sports?
A. No pain, no gain.
B. Rules are meant to be broken as long as nobody gets hurt.
C. You should understand the risks of each sport and listen to your body.
D. none of the above
Please select the best answer from the choices provided.
Answer:
option A because in sport pain makes a player strongest.......
Answer: Choice C: You should understand the risks of each sport and listen to your body.
Explanation: The statement that BEST describes the process of playing sports is C. You should understand the risks of each sport and listen to your body. It’s important to be aware of the potential risks associated with each sport and to pay attention to your body’s signals to avoid injury.