Greenhouse gases trap thermal energy and reflect the sun’s harmful radiation back to Earth is the answer
im not 100% sure tho
hope it helps:))
what are the two types of covalent bonds ? provide a description of each
Answer: Polar and Nonpolar
Polar molecules occur when there is an electronegativity difference between the bonded atoms.
Nonpolar molecules occur when electrons are shared equal between atoms of a diatomic molecule or when polar bonds in a larger molecule cancel each other out
In which of these can convection not occur?
gases
solids
liquids
fluids
Answer:
B: Solids
Explanation:
I have notes from EDG and I looked it up on the internet
I hope this helps
In the solids, convection can not occur. Convection can only be done in the fluids.
What is convection?Under the effect of gravity, hotter, less dense material rises while colder, denser stuff sinks, resulting in heat transfer"Convection is the ultimate mode of energy transmission to the surface"
There are three modes of the heat transfer;
1. Conduction
2. Convection
3. Radiation
Convection occurs in the fluid which is liquid and gases. Convection never occurs in the solid.
Hence option B is correct.
To learn more about the convection refer to the link;
https://brainly.com/question/16635311
The deeper you dive into the ocean and the higher the altitude you gain when climbing a mountain result in what?
Answer:
A change in pressure
Explanation:
This is because, the deeper you dive, the height of water above you creates a pressure on you. So, as the depth increases, the height of water increases, thus its weight on you, thus its pressure on you also.
Also, as you gain altitude as you climb a mountain, the height of air above you decreases. This thereby decreases the weight of air above you thus, decreasing the pressure of air on you.
So, in both cases, there is a change in pressure as height or depth changes. An increase in height results in decreased pressure and an increases in depth results in increased pressure.
THIS IS URGENT !!!
Four students recorded the time it took them to walk to school from their
homes as shown in the tabel below.
Motion of Four Students
Student
Which student had the greatest average speed?
Student 1
Student 2
Student 3
Student 4
I’LL MARK BRAINLIST!!!
What is the gravitational potential energy of a 0.550-kg projectile flying with 335 m/s, 72 meters above the ground?
Answer:
GPE = 388.08 Joules.
Explanation:
Given the following data;
Mass = 0.550kg
Speed = 335 m/s
Height = 72 meters
We know that acceleration due to gravity, g is equal to 9.8 m/s²
To find the gravitational potential energy;
Gravitational potential energy (GPE) is an energy possessed by an object or body due to its position above the earth.
Mathematically, gravitational potential energy is given by the formula;
[tex] G.P.E = mgh[/tex]
Where;
G.P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
Substituting into the formula, we have;
[tex] G.P.E = 0.550 * 9.8 * 72[/tex]
GPE = 388.08 Joules.
PLESS HELP!!! 30 points this is language arts
Read the excerpt from A Black Hole is NOT a Hole.
However, near a black hole, gases and dust and stars encounter its tug. Some things may be hurtling by so fast they won't get pulled into the black hole. Other things may not be as swift. They will be drawn in.
Closer and closer, the tugging force gets stronger and stronger. Close enough, the black hole no longer acts like a whirlpool.
With a whirlpool, there's always a fast-enough fish—or a fast-enough something—that moves so quickly it won't be pulled all the way into the center.
Not so with a black hole! Within a certain distance the black hole's power is so strong, nothing is fast enough to zip away.
What is being compared or contrasted in this excerpt?
A. A comparison between the power of a star and the power of a whirlpool is being made.
B. A contrast between the power of a star and the power of a whirlpool is being made.
C. A comparison between the power of a black hole and the power of a whirlpool is being made.
D. A contrast between the power of a black hole and the power of a whirlpool is being made.
Answer:
D. A contrast between the power of a black hole and the power of a whirlpool is being made.
Answer:
D
Explanation:
Two 31-m long parallel wires are 0.155 m apart. Each carries 168 A of current. What is the magnitude of the force between the wires? Please give your answer in Newtons.
Answer:
The magnitude of magnetic force between the two parallel wires is 1.13 N.
Explanation:
Given;
length of each wire, l = 31 m
distance between the two parallel wires, r = 0.155 m
current on each wire, I = 168 A
The magnitude of magnetic force between the two parallel wires is calculated as;
[tex]F = \frac{\mu _oI_1I_2 L}{2\pi r} \\\\F = \frac{(4\pi \times 10^{-7}) \times (168)^2 \times (31)}{2\pi \times 0.155} \\\\F = 1.13 \ N[/tex]
Therefore, the magnitude of magnetic force between the two parallel wires is 1.13 N.
is an electrical current which comes from a battery
which supplies a constant flow of electricity in one direction.
What is the equation for frequency?
Answer:
f=1/t is the equation of frqency
Did I do this right??
Answer:
yes
Explanation:
good job
To prevent injuries you should do a warm up and cool down.
True or False
Answer:
true
hope my ans helps
plz give brainliest to my answer
be sure to follow me
stay safe
have a good day
Answer:
True
Explanation:
A warm-up revs up your cardiovascular system by raising your body temperature and increasing blood flow to your muscles. Warming up also helps reduce muscle soreness and it lessens your risk of injury. Cooling down after your workout allows for a gradual recovery of pre exercise heart rate and blood pressure.
What does ADA apply to?
NEED HELP ASAP!!!!!!!!!!
Answer:
*The same balloon put into the freezer would be smaller and shriveled.
* The volume decreases as the temperature decreases.
* using a hypothetical starting volume of 2 liters in the balloon at 42 degrees Celsius, we can use the equation V1/T1 =V2/T2
V2= 1.54 liters which proves when temperature decreases , volume decreases as well.
Explanation:
The volume increases as the temperature increases, and volume decreases as the temperature decreases.
using a hypothetical starting volume of 2 liters in the balloon at 42 degrees Celsius, we can use the equation V1/T1 =V2/T2
Change Celsius to kelvin by adding 273.
2 liters/ 315 K = V2/243 K
Cross multiply and then divide by 315 to find V2
2 liters x 243 K / 315 K = V2
The Kelvin cancels itself out.
486 liters /315=V2
V2= 1.54 liters.
This proves that when the temperature decreases , so does the volume.
Is this right?? please help me. IT IS SOCIOLOGY!!
Answer:
Yes, it is correct : )
Explanation:
Hope this helps!
Answer:
yes, this is correct.
Explanation:
How many joules
of energy is needed
to run a 600 watt
power drill for
5 minutes?
Answer:
180KJ
Explanation:
power=Energy/time
power=600watts, time=5minutes=60*5=300 seconds
therefore;Energy=power*time= 600* 300
=180,000joules
OR
180Kilojoules
You step off of a ledge and land 0.5 seconds later. How high was the ledge?
1.25m
hope this is what you needed
A 4 N weight is hung from a spring causing it to
stretch a distance of 0.16 m. What is the
spring constant?
Answer:
0.25 N/m
Explanation:
F = 4 N
x = 0.16 m
Plug those values into Hooke's Law:
F = kx
4 N = k(0.16 m)
---> k = 0.25 N/m
Oxygen makes up more than 90 percent of the volume of the Earth's crust. Is oxygen found as a solid, liquid, or gas?
Answer:
Oxygen is an element that can be a solid, liquid or gas depending on its temperature and pressure. In the atmosphere it is found as a gas, more specifically, a diatomic gas. This means that two oxygen atoms are connected together in a covalent double bond.
How should ready-to-eat food be stored after it has cooled?
Answer:
The answer is most likely C.
Ready-to-eat foods are stored at the top of the fridge, away from raw foods so that harmful bacteria cannot transfer from the raw food to the cooked food. Raw meat, poultry and fish in sealed containers to stop them touching or dripping onto other foods.
Answer:
Explanation:
uncovered
If there is a 0.10 kg sample of the unknown metal alloy originally at 150℃, that is placed in 1.0 kg water at 20℃, and the final temperature rises to 23.5 ℃, what is the specific heat capacity?
Specific Heat of Water: 4180 J/kg ℃
Answer:
We now introduce two concepts useful in describing heat flow and temperature change. The heat capacity ( C ) of a body of matter is the quantity of heat ( q ) it absorbs or releases when it experiences a temperature change ( ΔT ) of 1 degree Celsius (or equivalently, 1 kelvin)
C=qΔT(12.3.1)
Heat capacity is determined by both the type and amount of substance that absorbs or releases heat. It is therefore an extensive property—its value is proportional to the amount of the substance.
For example, consider the heat capacities of two cast iron frying pans. The heat capacity of the large pan is five times greater than that of the small pan because, although both are made of the same material, the mass of the large pan is five times greater than the mass of the small pan. More mass means more atoms are present in the larger pan, so it takes more energy to make all of those atoms vibrate faster. The heat capacity of the small cast iron frying pan is found by observing that it takes 18,140 J of energy to raise the temperature of the pan by 50.0 °C
Explanation:
what are fission write its type
Answer:
In nuclear physics and nuclear chemistry, nuclear fission is a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into two or more smaller, lighter nuclei. ... Fission is a form of nuclear transmutation because the resulting fragments are not the same element as the original atom.
Explanation:
Plz mark brainliest thanks
Determine the angle between the 12 and the 4 on the face of a clock in radians, degrees and revolution
Answer:
Angle - 120 degrees, 2.093 radians and 0.33 revolution
Explanation:
Minute hand is on the 12 and the hour hand is on the 4.
The angle formed between 4 and 12 is
[tex]\frac{4}{12} * 360 = 120[/tex] degrees
The angle formed between 4 and 12 in radian is
[tex]\frac{\pi }{180} * 120 = 2.093[/tex] radians
The angle formed between 4 and 12 in revolution is
[tex]\frac{2.093 }{2 \pi } \\= \frac{2.093 }{2* 3.14} \\= 0.33[/tex] revolution
A student pulls down with a force of 40 N on a rope that winds around a pulley of radius 5 cm. find the torque?
Answer:
2N
Explanation:
Given that a student pulls down with a force of 40 N on a rope that winds around a pulley of radius 5 cm. find the torque?
Solution
Using the formula
Torque = Force × radius
I.e
Torque = F r
Where
F = 40N
r = 5 cm = 5/100 = 0.05m
Substitute all the parameters into the formula
Torque = 40 × 0.05
Torque = 2 N
Therefore, the torque on this scenario is 2 N
PLEASE HELP!!! GIVING BRAINLIEST!! ill also answer questions that you have posted if you answer these correctly!!!! (40pts)
Answer:
False
Explanation:
The ground or surface cannot give off energy
(correct me if i am worng) :)
How does quantum theory explain the emission spectra of atoms
A. Electrons slowly gain energy in a continuous fashion
B. The movement of an electron between energy levels occurs gradually a small amount of energy are absorbed
C. Each motion of an electron between energy levels is associated with a single, specific amount of energy
D. Electrons absorb the energy they need to jump to a higher energy level from any light source above a minimum energy
Answer:
C
Explanation:
Each motion of an electron between energy levels is associated with a single, specific amount of energy
Describe the relationship between the materials and amount of thermal energy transfer?
Answer:If you mean how much heat it can transfer as a thermal mass - in order to move heat from one place to another:
Typically the relationships are given by specific heat capacity (at different temperatures) and latent heats, plus the end-point temperatures to determine which of these conversion factors are relevant.
If time comes into it, you are looking at including shape and thermal conductivity at the minimum, so you really would need to be more specific
Explanation:
I have to finish this by 6 am today please somebody help me
PLEASE HELP! ASAP
During which process is radiation given off by isotopes with unstable atomic
nuclei?
A. Nuclear fusion
B. Chemical decay
C. Radioactive decay
D. Nuclear fission
Answer:
C. Radioactive decay
Explanation:
Answer:
Radioactive Decay
Explanation:
Ap3x
A block of mass m is attached to ideal spring of constant k. When the spring is neither stretched nor compressed, block is at the
equilibrium position (x-0).
Assume the force between the mass and the spring obeys Hooke's Law: Fs-kx, where x is the displacement and Fs is the
restoring force. The restoring force is always directed toward the equilibrium position. In this example of vibrational motion, the
restoring force illustrates Newton's
A. first law of motion
B. 2nd law of motion
C. 3rd law of motion
D. law of gravitational attraction
Answer: Newton’s Third Law of Motion
Explanation:
USATestPrep❤️
You rubbed two identical balloons in your hair's friend. This causes the balloons to become charged negatively with a magnitude of 2.5 x 10^-6 C. If they are held 0.5 cm apart, (a) What is the electric force between the two balloons? (b) It is a repulsive or attractive force? Why?
Answer:
a) F = 2.25 10³ N, b) REPULSIVE.
Explanation:
a) The electric force is given by coulomb's law
F = [tex]k \frac{q_1q_2}{r^2}[/tex]k q1q2 / r2
in this case nso indicate that the two charges have the same value
q₁ = q₂ = 2.5 10⁻⁶ C
Let's reduce the magnitudes to the SI system
r = 0.5 cm (1m / 100cm) = 5 10⁻³ m
let's calculate
F = [tex]9 \ 10^9 \frac{(2.5 \ 10^{-6})^2 }{(5 \ 10^{-3})^2}[/tex]
F = 2.25 10³ N
b) In electricity, electric charges of the same sign repel and those of the opposite sign attract
In this exercise, the balls are equal and are rubbed with the same material, for which it acquires charges of the same type, consequently, as the charges are of the same type, they indicate that the negative force is REPULSIVE.