Answer:
im in hardvard dont cheat get amzing grades if you want to go here
Explanation:
quá trình nào entropi của hệ không đổi
Answer:
I don speak communism. Could you answer in English?
Explanation:
Độ hấp thụ của dung dịch có độ truyền qua 30% ở bước sóng 640nm là bao nhiêu?
Two skaters face one another and stand motionless, then push against each other on the ice. If one's mass is 55 kg and he moves to the left after the push at a velocity of 4.3 m/s, how fast was the other skater traveling after the push if her mass was 48 kg.
Answer:
3.75 m/s
Explanation:
55/4.3 = 48/x
12.8 = 48/x
x = 48 : 12.8
x = 3.75 m/s
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CAN YOU BRAINLEST ME PLEASE
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Highlight the either increasing or decreasing to complete the sentence to demonstrate the relationship between the variables and the reaction rate.
(Increasing/Decreasing) the temperature, increases the reaction rate. (Increasing/Decreasing) the surface area, increases the reaction rate. (Increasing/Decreasing) the concentration, increases the reaction rate.
Answer:
1. Increasing
2. Decreasing
3. Increasing
Explanation:
i need working steps and answers
Explanation:
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A block of mass 2.52 kg is kept at rest
as it compresses a horizontal massless spring
(k 116 N/m) by 9.73 cm. As the block
is released, it travels 0.537 m on a rough
horizontal surface before stopping.
The acceleration of gravity is 9.8 m/s.
Calculate the coefficient of kinetic friction
between surface and block.
By Newton's second law, the net vertical force on the block is
∑ F = N - mg = 0
so that the normal force exerted by the surface has magnitude
N = mg = (2.52 kg) (9.80 m/s²) = 24.7 N
Then as the block slides over the surface, it feels a frictional force of
f = µ (24.7 N)
where µ is the coefficient of kinetic friction.
As the block is pushed by the spring to its equilibrium position, friction performs
µ (-24.7 N) (0.0973 m) = -2.40µ J
of work (which is negative because it opposes the block's motion).
In compressing the spring by 9.73 cm = 0.0973 m, we store
1/2 (116 N/m) (0.0973 m)² = 0.549 J
of energy. This energy is released and partially converted to kinetic energy, while the rest is lost to friction.
By the work-energy theorem, the total work performed on the block as the spring pushes it towards the equilibrium position is equal to the change in its kinetic energy:
W = ∆K
0.549 J - 2.40µ J = 1/2 (2.52 kg) v ² - 0
where v is the speed of the block at the equilibrium position. Solving for v, we get
v = 0.891 √(0.549 - 2.40µ) m/s
After the block is released, the only force acting on it as it slides freely is friction. It comes to a stop after 0.537 m, so that friction performs
µ (-24.7 N) (0.537 m) = -13.3µ J
of work.
Using the work-energy theorem again, we have
W = ∆K
-13.3µ J = 0 - 1/2 (2.52 kg) v ²
Substitute the velocity we found in terms of µ, and solve for µ :
-13.3µ J = -1/2 (2.52 kg) (0.891 √(0.549 - 2.40µ) m/s)²
===> µ = 0.0350
what are adaptations needed for animals to survive on grassland?
Answer:
short teeth, short hair, camoflauge, and speed
Explanation:
Answer:
speed and awareness
Explanation:
momentum dimensional in term of force, length and time
Answer:
Taking force, length and time as fundamental quantity.
Momentum=mv(Force/acceleration)×Velocity =[F/LT
−2
]×[LT
−1
]=[FT]
how can a calculated height be greater than an actual height?
Answer:
mesuring heigh and weight is important
A car starts from rest and accelerates at a steady 6.00 m/s2. How far does it travel in the first 3.00 s?
the law of conservation of energy also states that energy can be transformed ________
what will be there?
How many milliliters are in 3.2 L? (1000 mL = 1L)
Answer: 3200ml.
Please give brainliest.
Answer:
3200ml
Explanation:
[tex](3.2L)\frac{1000mL}{1L} = 3200mL[/tex]
if 2 magnets were forced together vertically on the same poles and suddenly released, how high would the top magnet travel? The magnets are disc-shaped with a circumference of 6.5" and a mass of 8 lbs, the combined force of the magnets is 13,200lbs.
drop down menu to complete the statement.
___ are made of amino
____ are used by all organisms to store the transmit genetic information
____ are used by organisms for tissue growth and repair
options are 1. proteins 2. nucleic acids
Answer:
The answer to the first question is protein
Which statements describe elliptical galaxies? *Select the two correct answers.*
A. They include the Milky Way.
B. They are the most common galaxy type.
C. They typically contain very little gas and dust.
D. They include the universe's largest galaxies.
Elliptical galaxies are galaxies that are shaped like an ellipse. An ellipse is oval in shape, which means elliptical galaxies are oval in shape.
The two correct statements that describe elliptical galaxies are:
B. They are the most common galaxy type.
C. They typically contain very little gas and dust.
Elliptical galaxies are galaxies where you will find little or no gas and dust. The galaxies that are numerous in number are the elliptical galaxies. In the elliptical galaxy, you can't find any spiral component in it.Therefore, from the above explanation, we can see that option B and C is the correct option.
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The statements which describes elliptical galaxies are Choice B and Choice C:
They are the most common galaxy type.They typically contain very little gas and dust.Elliptical galaxies are the most abundant type of galaxies found in the universe although because of their age and dim qualities, they're frequently outshone by younger, brighter collections of starsElliptical galaxies are characterized by the presence of less gas and dust and as such, new shiny stars are not born and the dim nature of elliptical galaxies can be attributed to this.Ultimately, elliptical galaxies are the oldest and are the most common galaxy type and they typically contain very little gas and dust.
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When developing an experimental design, which action could a scientist take to improve the quality of the result?
Answer: You can Identify any biases about the answer to the scientific question.
Explanation:
Vengo una ves en un minuto dos veces en un momento pero no vengo en diez años Ayudaaaaaaa
Answer:
La letra "m"
Explanation:
Children start to gain control over their attention beginning in preschool. This control is related to a growth
spurt in the brain's lobe.
Answer:
occipital parietal
Explanation:
Hope this helps, plus I took the test
For question 51, do you use a=d/t
No. That won't help. It's not even true.
Describe the role of oceans in the water cycle‽
Answer:
The ocean plays a key role in this vital cycle of water. The ocean holds 97% of the total water on the planet; 78% of global precipitation occurs over the ocean, and it is the source of 86% of global evaporation. ... Water evaporates from the surface of the ocean, mostly in warm, cloud-free subtropical seas.
Explanation:
Hope this helps.
When a car's acceleration is negative, what is happening to the car's motion?
the car slows down
the car speeds up
the car travels at a constant speed
the car remains at rest
Answer:
the car slows down
Explanation:
A model of a plane in different parts of the atmosphere uses a scale of
1:2,000. If a plane flies at an altitude of 4,000 feet, how high above ground
level is the plane in the model?
A. 8 ft
B. 1/4,000 ft
C. 4ft
0
D. 2 ft
A physics teacher walks 4 meters East, 2 meters South, 4 meters West, and finally 2 meters North. What is the distance and displacement of this teacher?
12. If the 50kg rock fell from the 20m high cliff, then what would its velocity be just before it
hits the ground?
Answer:
The velocity is 2.5 before hitting the ground
Explanation:
Mark me as brainliest
2021 edge
On a hike you walk 5000 m east, 3000 m north and 1000 m west at a constant speed of 1m/s calculate your velocity
Answer:
0.44 EST + 0.33 NTH
Explanation:
if this is incorrect and brainly removes the comments to try and sabotage you guys please report this for the sake of learning
The neurocognitive model of dreaming argues that dreams:
A. reflect the waking concerns and preoccupations of the dreamer.
B. represent the fulfillment of repressed wishes and urges.
C. have no meaning whatsoever and simply reflect random neural firings in the brainstem.
D. contain images that disguise the dream's true psychological meaning.
Dreams Often Feature Intense Emotions
Dreams Often Feature Intense EmotionsIn some instances, these emotions can become so intense that they interrupt the dream or cause the dreamer to wake abruptly. The three most common emotions that become intensified by dreams are anxiety, fear, and surprise.
dream
dreamFirst, let examined the definition of dream according to Sigmund Freud “dream is the disguised fulfilment of a repressed wish. Dreams are constructed like a neurotic symptom: they are compromises between the demands of a repressed impulse and the resistance of a censoring force in the ego” (Freud, 28).
Bright light therapy is used to gradually shift sleeping patterns to what we consider normal. For treatment, the timing of light exposure is critical. For DSPS, the light must be delivered to the retina as soon after spontaneous awakening as possible to achieve the desired effect.
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the force of gravity on Mars is 3.7 m/s^2. what is the force of gravity on Earth?
What four processes allow for the change of thermodynamics properties according to the first law
Answer:
The four types of thermodynamic process are isobaric, isochoric, isothermal and adiabatic.
In the absence of air resistance, as an object falls freely, its
O velocity increases
O acceleration increases
both A and B
O none of the above
Answer:
None of the above
Explanation:
None of the above
