Explanation:
Newton's law of cooling (or heating) states that the temperature of a body changes at a rate proportional to the difference in temperature between the body and its surroundings. It is a reasonably accurate approximation in some circumstances. dTdt=−k(T−T0), where k is a positive constant.
Answer:
Q=h.A.(T(t)-Tenu)
Explanation:
I need the answer to these quick
Answer:
where is the question ??/dude
Which descriptions refer to cumulus clouds? Select three options.
are fluffy
form layers
are usually gray
form 1–1.5 miles above Earth
can extend up to 10 miles into the sky
Answer: are fluffy
form 1-1.5 miles above Earth
can extend up to 10 miles into the sky
Explanation:
Cumulus clouds are referred to as the clouds that have have flat bases and its appearance resembles that of floating cotton.
Cumulus clouds simply shows a fair weather. Cumulus cloud also forms 1-1.5 miles above Earth and can also extend up to 10 miles into the sky.
Answer:
Answer: are fluffy
Explanation:
Ribosomes are like tiny “factories” within cells that do all of the following EXCEPT:
Answer: translate DNA into RNA <3
Explanation:
An RNA polymerase binds to promoters and then breaks down hydrogen bonds between two strands of the DNA and attaches on one of them. A DNA strand is used as a template for a new RNA molecule. In this way, pre-mRNA is made, which becomes mRNA after the introns are removed.
A mRNA molecule enters the ribosomes, located in the cytoplasm. In these organelles, a transfer RNA attaches to a mRNA and the process of translation begins. The final product is a polypeptide chain.
Explain why gases are more compressible than solid
Answer:
If we put pressure on a solid or a liquid, there is essentially no change in volume. ... The kinetic-molecular theory explains why gases are more compressible than either liquids or solids. Gases are compressible because most of the volume of a gas is composed of the large amounts of empty space between the gas particles.
Explanation:
what are the five properties of light
Answer: I believe it's dispersion, diffraction, reflection of light, refraction of light, polarization of light and interference of light.
Explanation:
how does lightning occur
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Answer:
Lightning is an electrical discharge caused by imbalances between storm clouds and the ground, or within the clouds themselves. Most lightning occurs within the clouds. ... This heat causes surrounding air to rapidly expand and vibrate, which creates the pealing thunder we hear a short time after seeing a lightning flash.
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Brainliest?
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Answer:
Lightning can be explained in terms of charges produced due to rubbing. During a thunderstorm, the air currents move upwards and the water droplets move downwards. And this caused due to the separation of charge due to this vigorous motion.
Explanation:
How many charges do copper(II) and Carbide have?
Answer:They have 10
Explanation:
A6 kg mass moving at 10m/s collides with a 4 kg mass moving in the
same direction at 4 m/s. After the collision both the 6 kg and 4 kg mass
continue to move in the same direction. If the 4 kg mass is moving at
10m/s, what is the speed of the 6 kg mass?
Answer:
Explanation:
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Which of the following provides alternating current? Select all that apply.
- Microphone
- Power outlet in your house
- Solar cells
- Battery
Two Toy cars with white and red colours are moved to the same height. If the mass of the white
car is doubled for the same height what would happen to potential energy of white car and
why?
Answer:
what could be rhe answer
Answer:
Also will be doubled
Explanation:
because potential energy is directly proportional to mass which means when mass or height increases the potential energy will also increases
* science*Name the two types of neutron stars.
Answer:
Radio pulsars and Recycled pulsars
"On a good day, it takes Mr. Hess 23 minutes (1380 seconds) to drive the 12 miles (19,300 meters). What is his average velocity on the way to school?"
I uh, don't understand this at all. If someone could help me solve this, I'd greatly appreciate it!
Answer:
his average velocity is
[tex]v = \frac{19300}{1380} = 13.9855(m \div s)[/tex]
examples for each different examples force affects
Explanation:
Examples for effect of force - example
1) Can change the state of an object(rest to motion/ motion to rest):For example, pushing a heavy stone in order to move it. 2) May change the speed of an object if it is already moving. ... 3) May change the direction of motion of an object.
A car with a mass of 880 kg is moving on the road with constant velocity. The force exerted by engine is 1600N. What is the frictional force between the road an the car?
Answer:
1600 N
Explanation:
F-F' = ma.................. Equation 1
Where F = Force exerted by the engine, F' = Frictional Force, m = mass of the car, a = acceleration of the car.
make F' the subject of the equation
F' = F-ma............... Equation 2
Given: F = 1600 N, m = 880 kg, a = 0 m/s (moving with a constant velocity).
Substitite these values into equation 2
F' = 1600+880(0)
F' = 1600 N.
Use the drop-down menu to select the education or qualification best demonstrated in each example.
Maritza is friendly and polite to people who enter the store where she works.
✔ customer-service skills
Darren stays calm and does not get frustrated when dealing with an angry customer.
✔ patience
Yelena is able to lift heavy items on high shelves.
✔ physical strength
Maritza is friendly and polite to people who enter the store where she works. She has customer-service skills.
What is the qualification?Qualification is a special skill or experience that makes someone suitable for a certain job. It shows the level of education. Everyone gets a job according to their qualification. It is formal documentation someone gets after completing the education.
Darren stays calm and does not get frustrated when dealing with an angry customer. He has patience.Yelena is able to lift heavy items on high shelves. She has physical strength.Maritza is friendly and polite to people who enter the store where she works. She has customer-service skills.Thus, these are the qualification or skills of Maritza, Darren, and Yelena.
Learn more about qualifications, here:
https://brainly.com/question/1953310
#SPJ7
the atomic number of Krypton si 36. if the mass number of a Krypton atom si 84, which table shows the number of subatómico inside anda outside the nucleus of the Krypton atom?
Answer:
A
Explanation:
You did not list the options. However, knowing the possible options from having seen the material myself - I can infer that the answer option is A. I apologize sincerely if this is wrong.
Pedro uses a bar magnet to pick up a nail. He then touches the tip of the nail to some staples.
Answer:
B) The nail has become a temporary magnet, while the bar magnet remains a permanent magnet.
Explanation:
I hope this helped you ;)
A string 1.30 meters in length is oscillating in its first harmonic. The frequency of
oscillation is 7.80 Hz. What is the wavelength of the first harmonic?
Answer:
2.6m
Explanation:
The formula for calculating the wavelength is expressed as;
λ = v/f
v is the velocity
f is the frequency of vibration
Given
f = 7.80Hz
We need to get the velocity
For string;
f = V/2L
7.80 = V/2(1.3)
7.80 = V/2.6
V = 2.6 * 7.8
V = 20.28m/s
Get the required wavelength
λ = v/f
λ = 20.28/7.80
λ = 2.6m
Hence the wavelength of the first harmonic is 2.6m
A force of 24 Newtons acts on an object for 2 seconds. What is
the amount of the impulse?
O 26Ns
O 48 Ns
0 22Ns
O 12Ns
PLEASE HELP ASAPPPP!!!!!
Katrina replaced the batteries in her camera with rechargeable ones. Later as she was recharging the batteries, Katrina told her mother “I am creating energy so that I can use these batteries again!” What was Katrina actually doing?
removing energy
destroying energy
transforming energy
repairing energy
PLS HELP, WILL GIVE BRAINLIEST
What subatomic particle has a negative charge and is found outside of the nucleus?
a. electron
b. nucleus
c. neutron
d. proton
Answer:
A
Explanation:
Hope this helps and have a wonderful day!!!
Answer:
A. electron
Explanation:
The electron is the only negatively charged particle in the answers. The proton is positive. The nutron has a neutral charge. The nucleus isn't really a particle. It's a group of protons and neutrons.
define the concept national building
In a chemical reaction, an iron atom becomes the ion Fr2+ . What happened to the ion atom
Answer:
In a chemical reaction, an iron atom became the ion which means that iron atom by loosing two electrons from its valence shell has oxidized into positively charged ion
Explanation:
The is greater for low-mass stars than it is for high-mass stars. 2. The stars known as are the very largest and brightest of all the stars. 3. Most of the stars near the Sun are . 4. Stars are classified on the basis of their spectral type and 5. Cepheids are examples of . 6. are no longer generating energy through nuclear fusion. 7. Stars that are cooler than the Sun yet 100 to 1,000 times as luminous as the Sun are classified as .
Answer:
red giant stars/ red hyper giants
Explanation:
take stephenson 2-18 for example the star is only 3200k where the sun is around 5000k.
Find the wavelength of a transverse wave the frequency of the wave motion is 3 Hz and the wave travels with a velocity of 48 m/s .
Answer:
16 m
Explanation:
explain in 2-3 sentences how a genotype determines a phenotype!
Will give b to the best one
Answer:
Genotype can be determined by biological tests. Both the genotype and phenotype sounds similar but have differences. The phenotype is determined by an individual’s genotype and expressed genes or by visible trait, for instance, hair color or type, eye color body shape, and height. We are all unique. Even monozygotic twins, who are genetically identical, always have some variation in the way they look and act. This uniqueness is a result of the interaction between our genetic make-up, inherited from our parents, and environmental influences from the moment we are conceived.
Ill give brainliest! 1. Which item below describes a quick change to
Earth's landscape?
A. a stone becoming smooth
B. dirt moving down a steep hill
C. flat land becoming a canyon
D. a glacier flattening the land below it
Answer:
I believe it's D. a glacier flattening the land below it.
The noble gas neon is used for filling neon signs. Like other noble elements, it has a full octet (complete outer energy level) of electrons, which makes the gas A. freeze at room temperature. B. react with other gases in the air. C. unlikely to combine with other elements. D. solidify at standard pressure and temperature, chiny pray-colored solid at room
Answer:
C. unlikely to combine with other elements.
Explanation:
In Chemistry, electrons can be defined as subatomic particles that are negatively charged and as such has a magnitude of -1.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others. Thus, this property is typically used to determine the chemical properties of elements.
Noble gases are chemical elements with eight valence electrons and as such have a full octet. Some examples are argon, neon, etc.
Hence, the full octet makes the gas (neon) unlikely to combine with other elements.
a water bomber flying with a horizontal speed of 85m/s at a height of 3000m drops a load on a fire below. How far in front of the target fire should the load be released?
Answer:
2081.65 m
Explanation:
We'll begin by calculating the time taken for the load to get to the target. This can be obtained as follow:
Height (h) = 3000 m
Acceleration due to gravity (g) = 10 m/s²
Time (t) =?
h = ½gt²
3000 = ½ × 10 × t²
3000 = 5 × t²
Divide both side by 5
t² = 3000 / 5
t² = 600
Take the square root of both side
t = √600
t = 24.49 s
Finally, we shall determine the distance from the target at which the load should be released. This can be obtained as follow:
Horizontal velocity (u) = 85 m/s
Time (t) = 24.49 s
Horizontal distance (s) =?
s = ut
s = 85 × 24.49
s = 2081.65 m
Thus, the load should be released from 2081.65 m.
Thermal conductivity of a material is given as 129Btuft–¹ h–¹°F–¹.Calculate this thermal conductivity in Jm–¹s–¹°C–¹(Given: 1Btu=1055J;0.3048m=1ft; and 1 °F= (5/9)°C)
Answer:
223.25 [tex]$\text{Jm}^{-1}\text{s}^{-1}^\circ\text{C}^{-1}$[/tex]
Explanation:
The thermal conductivity of an object is defined as the measure or the ability of the object to transfer heat or conduct heat through its body.
In the context, the thermal conductivity of the material is given as
[tex]$=129 \text{ Btu ft}^{-1}\text{h}^{-1}^\circ\text{F}^{-1}$[/tex]
And it is given that :
1 Btu = 1055 J
1 ft = 0.3048 m
[tex]$1^\circ F = \frac{5}{9}^\circ C$[/tex]
We know that 1 h = 3600 s
So the thermal conductivity of the material in [tex]$\text{Jm}^{-1}\text{s}^{-1}^\circ\text{C}^{-1}$[/tex] is :
Thermal conductivity :
[tex]$=\frac{129 \text{ Btu}}{1 \text{ ft }\times \text{1 h}\times 1^\circ\text{F}}$[/tex]
[tex]$=\frac{129 \times 1055 \text{ J}}{0.3048 \text{ m} \ \times 3600 \text{ s}\ \times \frac{5}{9}^\circ \text{C}}$[/tex]
= 223.25 [tex]$\text{Jm}^{-1}\text{s}^{-1}^\circ\text{C}^{-1}$[/tex]