The faster an object moves:
A the more potential energy it has.
B the more kinetic energy it has.
C the faster its particles vibrate.
D the cooler it gets.
Answer:
b the more genetic energy
Explain which components could be used to switch a heater and a light on in a hospital incubator
a switch
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While frying French fries, Wanda burned her hand. Burns are examples of a:
a. skin abnormality.
b. homeostatic balance.
c. skin infection.
d. homeostatic imbalance.
Answer:
d. homeostatic imbalance
Explanation:
Answer:
It's D
Explanation:
I'm pretty sure but if im wrong I'll give you the points back <3
How are gamma rays used for communication?
Answer:
No
Explanation:
Electromagnetic radiation is used for communications and transmission of information. The waves that are used in this way are radio waves, microwaves, infrared radiation and light.
Which magnets need electric current for magnetism?
Answer:An electromagnet is a magnet that works with electricity. It can be switched on and off. The coils are nearly always made of copper wire because copper is such an excellent electrical conductor. Electromagnets have many uses.Permanent magnets are mainly used in small generators, and they have the advantage that they don't need a power supply. Electric magnets are iron or steel wound with wire. When electricity passes through the wire, the metal becomes magnetic and creates a magnetic field.
Explanation:
What is the limiting factor of speed for an object falling through a vacuum?
⭐Air Resistance is the factor, which limits the speed of an object falling through the air...⭐
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is boiling water in a kettle on a stove kinetic or potential energy?
Answer:
Boiling a kettle is an example of both thermal and kinetic energy. Thermal energy comes from a substance whose molecules and atoms are vibrating faster due to a rise in temperature. Heat energy is another name for thermal energy. Kinetic energy is the energy of a moving object.
it's kinetic!
How do plants obtain the carbon dioxide required for photosynthesis?
Answer:
Explanation:
Carbon dioxide in photosynthesis Plants get carbon dioxide from the air through their leaves. The carbon dioxide diffuses through small holes in the underside of the leaf called stomata . (singular: stoma. plural: stomata) The lower part of the leaf has loose-fitting cells to allow carbon dioxide to reach the other cells in the leaf.
Answer:
Plants get the carbon dioxide they need from the air through their leaves. It moves by diffusion through small holes in the underside of the leaf called stomata These let carbon dioxide reach the other cells in the leaf, and also let the oxygen produced in photosynthesis leave the leaf easily.
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Two kids are roller skating. Amy, with a mass of 55 kg, is traveling forward at 3 m/s. Jenny, who has a mass of 40 kg, is traveling in the opposite direction at 5 m/s. They crash into each other and hold onto each other so that they move as one mass. How fast are they traveling? How would you find your answer?
Answer:
They traveling at along the direction of 55 kg kid.
Step-by-step explanation:
Conservation of momentum-
Momentum of a system is constant if there are no external forces acting on the system.
As they crash into each other and hold onto each other so that they move as one mass and no other force is acting on them, so conservation of momentum can be applied here.
The final direction of velocity will be opposite to the assumed direction of the mass of 40 kg.
This is a conservation of momentum problem. The equation relevant here is
[tex]\[m_1v_1+m_2v_2=\left ( m_1+m_2 \right )v_f\][/tex]
where m is the mass and v is the velocity. Because Amy and Jenny move as one mass after crashing (or colliding) with each other, this is an inelastic collision. What we to find is the final velocity, [tex]v_f[/tex], of both Amy and Jenny as a single body.
[tex]v_f=\frac{m_1v_1+m_2v_2}{\left ( m_1+m_2 \right )} = \frac{(55)(3)+(40)(5)}{(55+40)} = \text{3.84 m/s}.[/tex]
A rubber ball moving at a speed of 5 m/s hit a flat wall and returned to the thrower at 5 m/s. Which statement
correctly describes the momentum of the rubber ball?
a. Its magnitude increased and its direction changed.
b. Its magnitude increased but its direction remained the same.
c. Its magnitude remained the same but its direction changed.
d. Its magnitude and its direction both remained the same.
Answer:
d. Its magnitude and its direction both remained the same.
Explanation:
Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.
Mathematically, momentum is given by the formula;
[tex] Momentum = mass * velocity [/tex]
The law of conservation of momentum states that the total linear momentum of any closed system would always remain constant with respect to time.
This ultimately implies that, the law of conservation of momentum states that if objects exert forces only on each other, their total momentum is conserved.
In this scenario, a rubber ball moving at a speed of 5 m/s hit a flat wall and returned to the thrower at 5 m/s. Thus, the statement which correctly describes the momentum of the rubber ball is that its magnitude and its direction both remained the same because its velocity didn't change while returning to the thrower.
The correct statement should be "Its magnitude remained the same but its direction changed". Option C is correct.
Given information:
A rubber ball moving at a speed of 5 m/s hit a flat wall and returned to the thrower at 5 m/s.
Now, the mass of the ball doesn't change and the magnitude of the velocity is also the same.
Momentum can be defined as the product of mass and velocity. It is a vector quantity because velocity is also a vector quantity, and it has magnitude and direction.
Now, the magnitude of momentum will be the same because mass and velocity don't change in magnitude.
The direction of velocity will be reversed. So, the direction of momentum will also be reversed.
Therefore, the correct statement should be "Its magnitude remained the same but its direction changed". Option C is correct.
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Why do some organisms never turn into fossils?
A. They are far too large to be buried in the ground.
B. They are made mostly of soft tissues.
C. They contain too much protein to be preserved.
D. They contain chemicals that prevent the hardening of their bodies.
Answer:
The answer is B.
Explanation:
Since they are made up of soft tissues, they decompose become they become fossils.
Another example of an object that has pressure energy
Answer:
A balloon?
Explanation:
it inflates because of the air pressure inside
HELP ME PLEASEE!!!THIS IS SCIENCE
Answer:
B.
Explanation:
What can scan tiny details inside the human body by using principles of electromagnetism.
Answer:
magnetic resonance imaging (MRI)
A food has 2 grams of protein, 2 grams of carbs, and 2 grams of fat. How many total calories does this food have? HELP
Answer: 6 grams
Explanation:
Cause 2+2+2=6
Whether or not the information on an online source is credible and factual, is up to the user to decide.
Answer:
Informational references provide only a limited amount of specific statistical information. false. Information should be________to ensure more than one source provides the same factual information.
Explanation:
Answer:
The statement presented above is TRUE. Yes, it's up to us whether to accept the statement whether as reliable or not. At the end of the day, it is our responsibility to know the facts and not let other people dictate what you have to think about. It has to be taken into account that you can decide for yourself.
Explanation:
Speed = Distance Time Velocity = 1. Find the velocity of a truck that travels 75miles north in 2.5 hours? List: Equation: Substitution: Answer with units:
Answer:
187.5 m/s (i think)
Explanation:
If you use the formula V= T times displacement you can find this out by doing the following-
Displacement equals 75 m
T equals 2.5 hrs
75x2.5= 187.5
and since velocity is measured in m/s, it becomes
187.5 m/s
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Answer these questions:
1. How is a mixture different from a compound?
2. How are the atoms in a compound held together?
Classify the following as mixtures, elements, or compounds:
3. H20
4. H4
5. Fe + S
Answer:
1.A compound is when two substances are put together and there is a reaction creating a new substance Ex. H20. A mixture is when two substances are put together, there is no reaction and they can be separated easier than compounds. Ex. salad dressing.
2.Atomic bonds
3.Compound
4.Element
5.Mixture
Explanation:
Please help me like rn it’s an embergency
Answer:
first one
Explanation:
electromagnetism is the forces and fields associated with charge
______ tides, tides that are weaker than normal, happen when the Moon is at first or last quarter phase and the sun and moon interfere with each other.
A high
B low
C neap
D spring
Answer:
C. Neap Tides
Explanation:
Answer:
c neap tides
Explanation:
A car traveling at 5m/s starts to speed up after 3 seconds its velocity has increased to 11 m/s what is its acceleration
Answer:
a=(v-u)/t
Explanation:
a =(11-5)/3
a= 8/3
a= 2.6 m/s
The acceleration of the car is 2 m/s².
What is acceleration?Acceleration is the rate at which speed and direction of velocity vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates.
Even if the speed is constant, motion on a circle accelerates because the direction is always shifting. Both effects contribute to the acceleration for all other motions.
Acceleration is a vector quantity with and SI unit of it is meter/second².
Given parameters:
Initial speed of the car: u = 5 m/s.
Final speed of the car: v = 11 m/s.
Time interval: t = 3 second.
Change is speed = final speed - initial speed
= 11 m/s - 5 m/s
= 6 m/s.
Hence, its acceleration is = change in speed / time interval
= 6/3 m/s²
= 2 m/s².
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The least penetrating form of radiation is
X rays
gamma radiation
ОООО
alpha radiation
beta radiation
Answer:
radio radiation........
Answer
C.( Alpha particles!
a trolley of mass 20kg was originally at rest on a smoth horizontal surface. bu how much will it accelerate if a pulling force of 22N is applied on it horizontally?
Answer:
just divide 22 N by 20 kg to get the acceleration in m/s2
Explanation:
I hope this is right-
is a rare disorder that includes the inability to feel pain.
A. Somatoform pain disorder
B. Congenital analgesia
C. Kinesthesis
D. Anesthesia
Please select the best answer from the choices provided
Ο Ο Ο
B.
D
The rare disorder that includes the inability to feel pain is called Congenital analgesia. That is option B.
What is Congenital analgesia?Congenital analgesia is defined as ,the name implies, a genetic disorder that rarely occurs which makes one not to be able to feel pain.
It is an autosomal recessive disorder in which there is genetic changes in the PMRD12 gene.
Therefore, the rare disorder that includes the inability to feel pain is called Congenital analgesia.
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BI
Kinetic Energy of a Ball
at a Constant Mass
500
400
Kinetic Energy (m)
300
200
100
0
0 5 10 15 20 25
Speed (meters per second)
10 meters per second, which statement describes the change in kinetic energy of a ball of the same mass thrown
Compared to a ball thrown
at 20 meters per second?
halt (%) the kinetic energy of the ball thrown at 10 meters per
The kinetic energy of the ball thrown at 20 meters per second
second
The kinetic energy of the ball thrown at 20 meters per second is two times (2) the kinetic energy of the ball thrown at 10 meters per
second
The kinetic energy of the ball thrown at 20 meters per second is the same as () the kinetic energy of the ball thrown at 10 meters per
second
The kinetic energy of the ball thrown at 20 meters per second is four times (4) the kinetic energy of the ball thrown at 10 meters per
Second
10:18 AM
3/4/2021
4
13 14 15 16 17 18 19
20 21 22
Next
Answer: A
Explanation:
what determines the color of light?
1. brightness
2. wavelength
3. amplitude
4. reflection rate
Answer:
2. wavelength
Explanation:
Light moves in waves. Light waves are different from sound waves in that light travels in transverse waves (as opposed to longitudinal, which is how sound waves travel). A light wave that travels in a direction is called a light ray.
Just like other waves, light waves have a wavelength and amplitude. The wavelength determines the color; we will learn more about this in the lesson on color. The amplitude of a light wave determines the brightness. Just as large amplitudes in sound waves result in sounds with greater intensities (louder sounds), large amplitudes in light waves result in light with greater intensity (brighter light).
A layer of ethyl alcohol (n= 1.361) is on top of the water ( n=1.333) . At what angle relative to the normal to the interface of the two liquids is light totally reflected
Answer:
78.35°
Explanation:
THIS IS THE COMPLETE QUESTION BELOW;
A layer of ethyl alcohol (n = 1.361) is on top of water (n = 1.333). To the nearest degree, at what angle relative to the normal to the interface of the two liquids is light totally reflected?
From Snell's Law,
(ni)/(nr) = Sin (θr) / Sin (θi)
Where
θi = Angle of Incidence
θr = Angle of refraction
ni = Refractive index given for ethyl alcohol
nr = Refractive index of medium from which light is refracted
ni = 1.361
nr = 1.333
, θr = 90° ( Critical Angle is reffered to as Angle of Incidence at refracted angle of 90°) (θi = θc)
(ni)/(nr) = Sin (θr) / Sin (θi)
1.361/ 1.333 = Sin (90°)/ Sin( θc)
1.021= 0.894/ Sin( θc)
Sin( θc)= (0.9794
θc = Sin⁻¹ 0.9794)
θc = 78.35°
In terms of activation energy, why does increasing the temperature of a reaction make it proceed more quickly? A. Increasing the temperature increases how many reactant molecules reach activation energy. B. Increasing the temperature reduces the activation energy C. Increasing the temperature increases the potential energy of the reactants D. Increasing the temperature makes the molecules move slower.
Answer:
A. Increasing the temperature increases how many reactant molecules reach activation energy.
Explanation:
The correct statement is " Increasing the temperature increases how many reactant molecules reach activation energy"
What is activation energy?"Activation energy is the minimum amount of energy that must be provided to molecules /atoms of the compounds/ elements to result in a chemical reaction."
When temperature increases the kinetic energy of the molecules increases hence more reactant molecules reach the activation energy.
So it can be concluded that by Increasing the temperature increases how many reactant molecules reach activation energy.
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When a large truck pushes a small car with a given force, the small car is applying an _____and ____ force on the truck.
Answer:
Equal and opposite
Explanation:
A 5 kg object is moving downward at a velocity of 12 m/s and is
currently 2.6 meters above the ground.
calculate its kinetic energy
calculate its potential energy
calculate its mechanical energy
Answer:
the first one i think
Explanation: