A doctor takes an x-ray of your body this is an example of conduction, convection, radiation?
Answer:
RadiationExplanation:
An x-ray emits radiation to see through the outer part of your body.
Hope this helps! <3
An X-ray is a type of radiation which is a type of electromagnetic radiation in the electromagnetic spectrum.
What is electromagnetic spectrum?
The electromagnetic spectrum consists of electromagnetic radiation consists of waves made up of electromagnetic field which are capable of propogating through space and carry the radiant electromagnetic energy.
The radiation are composed of electromagnetic waves which are synchronized oscillations of electric and magnetic fields . They are created due to change which is periodic in electric as well as magnetic fields.
In vacuum ,all the electromagnetic waves travel at the same speed that is with the speed of air.There are 7 types of electromagnetic radiation in the electromagnetic spectrum.Gamma rays have the highest energy while radio waves have least energy.
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What is the theory for formation of fossil fuel plz help
A:cabon dioxide levels decreased, resulting in nitrogen fixation
B:earth cooled, changing oxygen to carbon
C:fossil fuels are the remnants of organisms that lived a long time ago and were buried, heated, and formed into hydrocarbons
D:fossil fuels arrived on earth from comets and asteroids
Answer:
C.fossil fuels are the remnants of organisms that lived a long time and were buried,heated and formed into hydrocarbons
For every ______
there is an equal and opposite ______.
a. interaction & action b. action & reaction
c. action & interaction
It's Action and Reaction
PLEASSSE HURRY!!
The sum of all of the chemical reactions occurring in a cell is called
A) photosynthesis
B) diffusion
C) oxidative respiration
D) metabolism
Answer:
d
Explanation:
i am smart
Do Now: You are asked to go to downtown Newark and pick up a small bag of materials for a grant project. Pay is $25. The materials will be delivered to Room 224, 2nd floor in Barringer High School. Create a numbered procedure, a list of steps that you will take to pick up and deliver the materials. Click for Example
Answer:
sorry im not in physics
Explanation:
Ibp, merch link in bio
thank you for the free points
Answer:
love
Explanation:
A microwave oven operates on 1500 W of power and is used for 30 minutes. How
much electrical energy, in kW. h, is used by the microwave oven?
Answer:
i think the answer is 50 kW.h
What is the displacement of the ride between 0s and 16 s?
Answer:
See attached answer.
Explanation:
To solve this we must be knowing each and every concept related to displacement and its calculations. Therefore, the ride's displacement from time t = 0 s to time t = 16 s is 16v.
What is displacement?The distance along a straight line connecting an object's original and final positions is its displacement [x].
Displacements are not always a good thing. It may also be 0 or negative. A negative displacement indicates that the item has moved away from the origin and toward the right if a positive direction is situated to the right of both the origin.
If the body's velocity at a given moment in time is 'v' m/s, then displacement may be expressed mathematically as-
v = dx /dt
dx = vdt
Integrating on both sides, we get
∫dx = ∫vdt
∫dx [x = 0 to x = x] = ∫vdt [ t = 0 to t = 16 s]
x = v [16 - 0]
x = 16v
Therefore, the ride's displacement from time t = 0 s to time t = 16 s is 16v.
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A ball is thrown vertically down from the edge of a cliff with a speed of 4 m/s,
how high is the cliff, if it took 12 s for the ball to reach the ground?
Given two metal balls (that are identical) with charges LaTeX: q_1q 1and LaTeX: q_2q 2. We find a repulsive force one exerts on the other to be LaTeX: 1.35\times10^{-4}N1.35 × 10 − 4 N when they are 20 cm apart. Accidentally, one the the experimenters causes the balls to collide and then repositions them 20 cm apart . Now the repulsive force is found to be LaTeX: 1.406\times10^{-4}N1.406 × 10 − 4 N. What are the initial charges on the two metal balls?
Answer:
[tex]q_1=\pm0.03 \mu C[/tex] and [tex]q_2=\pm0.02 \mu C.[/tex]
Explanation:
According to Coulomb's law, the magnitude of force between two point object having change [tex]q_1[/tex] and [tex]q_2[/tex] and by a dicstanced is
[tex]F_c=\frac{1}{4\pi\spsilon_0}\frac{q_1q_2}{d^2}-\;\cdots(i)[/tex]
Where, [tex]\epsilon_0[/tex] is the permitivity of free space and
[tex]\frac{1}{4\pi\spsilon_0}=9\times10^9[/tex] in SI unit.
Before dcollision:
Charges on both the sphere are [tex]q_1[/tex] and [tex]q_2[/tex], d=20cm=0.2m, and [tex]F_c=1.35\times10^{-4}[/tex] N
So, from equation (i)
[tex]1.35\times10^{-4}=9\times10^9\frac{q_1q_2}{(0.2)^2}[/tex]
[tex]\Rightarrow q_1q_2=6\times10^{-16}\;\cdots(ii)[/tex]
After dcollision: Each ephere have same charge, as at the time of collision there was contach and due to this charge get redistributed which made the charge density equal for both the sphere t. So, both have equal amount of charhe as both are identical.
Charges on both the sphere are mean of total charge, i.e
[tex]\frac{q_1+q_2}{2}[/tex]
d=20cm=0.2m, and [tex]F_c=1.406\times10^{-4}[/tex] N
So, from equation (i)
[tex]1.406\times10^{-4}=9\times10^9\frac{\left(\frac{q_1+q_2}{2}\right)^2}{(0.2)^2}[/tex]
[tex]\Rightarrow (q_1+q_2)^2=2.50\times10^{-15}[/tex]
[tex]\Rightarrow q_1+q_2=\pm5\times 10^{-8}[/tex]
As given that the force is repulsive, so both the sphere have the same nature of charge, either positive or negative, so, here take the magnitude of the charge.
[tex]\Rightarrow q_1+q_2=5\times 10^{-8}\;\cdots(iii)[/tex]
[tex]\Rightarrow q_1=5\times 10^{-8}-q_2[/tex]
The equation (ii) become:
[tex](5\times 10^{-8}-q_2)q_2=6\times10^{-16}[/tex]
[tex]\Rightarrow -(q_2)^2+5\times 10^{-8}q_2-6\times10^{-16}=0[/tex]
[tex]\Rightarrow q_2=3\times10^{-8}, 2\times10^{-8}[/tex]
From equation (iii)
[tex]q_1=2\times10^{-8}, 3\times10^{-8}[/tex]
So, the magnitude of initial charges on both the sphere are [tex]3\times10^{-8}[/tex] Coulombs[tex]=0.03 \mu C[/tex] and [tex]2\times10^{-8}[/tex] Colombs or [tex]0.02 \mu C[/tex].
Considerion the nature of charges too,
[tex]q_1=\pm0.03 \mu C[/tex] and [tex]q_2=\pm0.02 \mu C.[/tex]
1. A stone is thrown horizontally at 8.0 m/s from a cliff 78.4 high. How far from the base of the cliff does the stone strike the ground?
Answer:
64m away if the horizontal speed does not change
Explanation:
Which is a true statement about a series circuit?
A.) Every part of the circuit is positively charged.
B.) The current flow through every part of the circuit is the same.
C.) The current through the circuit can take several paths.
D.) Every part of the circuit is negatively charged.
Please help, I'm on a time limit!
the answer is B your welcome
The true statement about a series circuit is: the current flow through every part of the circuit is the same. Hence, option (B) is correct.
What are series and parallel circuit?Electrical networks and two-terminal components can be linked either serially or parallelly. The electrical network that results will have two terminals and be capable of operating in either a series or parallel topology.
It depends on your point of view whether a two-terminal "thing" is an electrical network (like resistors connected in series) or an electrical component (like a resistor). In this article, a two-terminal "thing" that participates in series/parallel networks will be referred to as a "component."
Each component connected in series travels the same "electrical path" and carries the same amount of current—equal to the network's current—through it.
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dont skip and pls help ASAP bc if you do i will give 10 pts + brainliest but pls hurry
ANSWER
Mass: The resistance of an object to acceleration, size-dependent
Volume: The amount of space an object occupies
Boiling point: The temperature at which a liquid boils and turns to vapor.
Melting point: The temperature at which a solid melts and turns to liquid
Density: Size-independent
Solubility: The ability of a substance (solvent) to dissolve when placed in a liquid (solute)
Magnetism: Size-dependent
EXPLANATION:
Mass: the more mass something has, the harder it is to accelerate. This is somewhat intuitive, but is also demonstrated in newton's third law. It's size-dependent because for an object of a given density, the size (volume) will change the mass.
Volume: big objects take up more space. If you put an apple in bucket filled to the brim with water, a little water will splash out, because the apple is now occupying the space that the water used to, but if you put in a watermelon, a lot of water will splash out, because the watermelon is taking up even more space.
Boiling point: when a liquid gets too hot, it will change to gas (example: water to steam)
Melting point: when a liquid gets too cold, it will change to a solid (example: water to ice)
Density: how much mass there is in a given volume. A sphere made of lead will have more mass than a sphere made of wood, even if they are the same size. Size-independent because a big lead sphere has the same density as a small lead sphere, they just have different masses.
Solubility: some substances dissolve in certain solvents, other's don't.
Magnetism: size-dependent because a bigger magnet is stronger than a smaller one if they are identical in every other way. More space means more domains means a stronger magnet.
Answer:
i agree
Explanation:
A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope , its speed is 4 m/s. But 3 seconds later at the bottom of the slope , its speed is 22 m/s. What is the average acceleration?
Please Show Steps or work on how to do it :(( This topic confuses me and I just get lost.
Caitlin is riding her bike. Which of the following statements tells what is happening?
The force of gravity of the sun on earth in December compared to June is ?
Answer:
Earth is slightly closer to the Sun in December than it is in June. The force of gravity is slightly smaller
Explanation:
the correct symbol for the metric (SI) unit of temperature is
A: k
B: t
C: f
D: c
C (Celsius) is the correct symbol for the metric (SI) unit of temperature. The correct option is D.
The Celsius scale is widely used for measuring temperature in the metric system.
The symbol "°C" is used to represent degrees Celsius. It is named after the Swedish astronomer Anders Celsius, who introduced the scale in the 18th century.On the Celsius scale, the freezing point of water is defined as 0 degrees Celsius, and the boiling point of water is defined as 100 degrees Celsius at standard atmospheric pressure.The Celsius scale is an integral part of the International System of Units (SI), which is the modern metric system used for scientific and everyday measurements.In certain scientific and engineering fields, such as thermodynamics, the Kelvin scale (symbol: K) is also used as an absolute temperature scale but the SI unit of temperature is Celsius.
Thus, the correct option is D.
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A current of 10 A moves through a circuit that contains multiple resistors in parallel. Which statement correctly describes the current through the resistors?
The current through all of the resistors will add up to 10 A.
The current through each resistor will be 10 A.
The current will be greatest through the resistor with the highest resistance.
The current will travel only through the resistor with the least resistance.
Answer:
The current through all of the resistors will add up to 10 A.
Explanation:
During the process of cellular respiration, water becomes oxygen. (2 points)
True
False
Answer: False
Explanation:
Hi, I hope this helps!
During cellular respiration, glucose reacts with oxygen to produce carbon dioxide, water and energy.
Answer: False
Explanation:
A runner is jogging in a straight line at a
steady vr= 8.4 km/hr. When the runner is
L= 6.3 km from the finish line, a bird begins
flying straight from the runner to the finish
line at vb= 42 km/hr (5 times as fast as the
runner). When the bird reaches the finish
line, it turns around and flies directly back to
the runner.
Answer:
Total distance traveled by bird is 10.5 km.
Explanation:
Given that,
Velocity of runner= 8.4 km/hr
Distance = 6.3 km
Velocity of bird = 42 km/hr
Suppose, How far does the bird travel?
We need to calculate the time of bird
Using formula of time
[tex]t=\dfrac{d}{v_{b}}[/tex]
Put the value into the formula
[tex]t=\dfrac{6.3}{42}[/tex]
[tex]t=0.15\ hr[/tex]
We need to calculate the distance runner travels during time period
Using formula of distance
[tex]d=v_{r}\times t[/tex]
[tex]d=8.4\times0.15[/tex]
[tex]d=1.26\ km[/tex]
We need to calculate the distance of runner to FL
Using distance
[tex]d'=6.3-1.26[/tex]
[tex]d'=5.04\ km[/tex]
We need to calculate the net closing speed between runner and bird
Using speed
[tex]v'=v_{r}+v_{b}[/tex]
[tex]v'=8.4+42[/tex]
[tex]v'=50.4\ km/hr[/tex]
We need to calculate the time for runner and bird to meet
Using formula of time
[tex]t=\dfrac{d}{v'}[/tex]
Put the value into the formula
[tex]t=\dfrac{5.04}{50.4}[/tex]
[tex]t=0.1\ hr[/tex]
We need to calculate the distance covered by runner
Using formula of distance
[tex]d=vt[/tex]
Put the value into the formula
[tex]d=8.4\times0.1[/tex]
[tex]d=0.84\ km[/tex]
We need to calculate the distance covered by bird to runner
Using formula of distance
[tex]d=vt[/tex]
Put the value into the formula
[tex]d=42\times0.1[/tex]
[tex]d=4.2\ km[/tex]
We need to calculate the total distance
Using distance
[tex]D=6.3+4.2[/tex]
[tex]D=10.5\ km[/tex]
Hence, Total distance traveled by bird is 10.5 km.
what is statement can most likey be useing in the shock waves of atmoic bomb
Answer:
The initial energy emission occurs by 80% or more in the form of gamma rays but these are quickly absorbed and dispersed mostly by air in little more than a microsecond, converting gamma radiation into thermal radiation (thermal pulse ) and kinetic energy (shock wave) which are actually the two dominant effects in the initial moments of the explosion. The rest of the energy is released in the form of delayed radiation (fallout or fallout) and is not always counted when measuring the performance of the explosion.
Explanation:
High altitude explosions produce greater damage and extreme radiation flux due to lower air density (photons encounter less opposition) and consequently a higher blast wave is generated.
Why is the nucleus positive in charge?
Answer:
The nucleus has an overall positive charge as it contains the protons. Every atom has no overall charge (neutral). This is because they contain equal numbers of positive protons and negative electrons. These opposite charges cancel each other out making the atom neutral.
Explanation:
Lynette has made it to the final round of a tennis tournament. While watching a match between two other players, she attributes her racing heart and rapid breathing to excitement. The next night, just before her own match, she attributes her racing heart and rapid breathing to nervousness. Which theory of emotion best explains this situation?
Answer: D. the Schachter-Singer theory
Explanation:
The Schachter-Singer theory which is also called the Two-factor theory of emotion, explains that humans feel emotion after they appraise the changes in their body in reaction to a stimuli as this would then give them a better means to tell which emotion they are feeling.
Lynette in the first instance noticed she had a racing heart and rapid breathing in response to watching two other players and was then able to appraise this and attribute it to excitement.
When the same thing occurs again but under different circumstances, she is able to appraise it differently and attribute it to nervousness which shows that the Schachter-Singer theory is the relevant theory.
The Olympic record for running the 200m dash is 19.3 seconds. What is the average speed for this record?
A. 1.04 m/s
B. 5.18m/s
C.10.0m/s
D. 10.4m/s
A toy plane with a mass of 1.5 kg is flying in the air at 8.0 m/s. What is its kinetic energy?
Given : A toy plane has a mass of 1.5kg . It is flying in air at a speed of 8m/s .
To Find : The Kinetic energy of the plane .
Solution : The mass of the toy plane is 1.5kg and Velocity is 8.0 m / s . So we know the formula to find the kinetic energy as ,
[tex]\boxed{\red{\bf Energy_{Kinetic}=\dfrac{1}{2}mv^2}}[/tex]
On substituting the respective values,
⇒ KE = ½mv².
⇒ KE = ½ × 1.5 kg × (8 m/s)².
⇒ KE = ½ × 1.5 kg × 64m²/s² .
⇒ KE = 48 J .
Hence the Kinetic energy of the plane is 48Joules.
The kinetic energy of a plane having a mass of 1.5 kg flying in the air at 8.0 m / s is 48 J.
What is kinetic energy?Kinetic energy is a type of power that a moving object or particle possesses. When an object undergoes work, which involves the transfer of energy, by exerting a net force, the object accelerates and consequently obtains kinetic energy.
A moving object or particle has kinetic energy, which depends on both its mass and its rate of motion. The type of motion can be vibration, rotation on an axis, translation (or travel along a path from one place to another), or any combination of these.
Given:
The mass of the toy plane, m = 1.5 kg,
The velocity of the toy plane, v = 8 m / s,
Calculate the kinetic energy by the formula given below,
[tex]KE = 1/2mv^2[/tex]
Substitute the values,
KE = 1 / 2 × 1.5 × 8²
KE = 1 / 2 × 1.5 × 64
KE = 48 J
Therefore, the kinetic energy of a plane having a mass of 1.5 kg flying in the air at 8.0 m / s is 48 J.
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Why was Copernicus reluctant to publish his ideas?
Answer:
He was scared
Explanation:
Answer:
He Feared persecution .
Explanation:
A car travels at 15 m/s for 30 minutes. How far did it travel?
Answer:
27000 meters
Explanation:
15 x 60 x 30
Find the momentum
of a
30g ball traveling
12 m/s
Answer:
0.36 kgm/s
Explanation:
Formula for momentum is :
P=mv
p is momentum
m is mass = 30g = 0.03kg
v is velocity = 12 m/s
P= 0.03 x 12
P = 0.36 kgm/s
A football was kicked so that it traveled 65 yards in 3.0 total seconds. What was the speed
and angle above horizontal that the ball was kicked?
Answer:
vx = 65 yd/3 sec = 21.7 yd/sec since horizontal speed is constant
vy = g t = (32 / 3) yd/sec^2 * 1.5 sec = 16 yd/sec where 32/3 is the acceleration due to gravity in yds / sec^2 and 1.5 is the time to travel each way in the vertical direction
V = (vx^2 + vy^2)^1/2 = (21.7^2 + 16^2)^1/2 = 27 yd/sec
tan theta = vy/vx = 16 / 21.7 = .737 theta = 36.4 deg
You can check using the range formula:
R = v^2 sin (2 theta) / g = 27^2 * .955 / (32 / 3) = 65.3 yds
The difference from 65 yds may be rounding error.
why is vitual force theory? why was it discarted
Answer:
I am not very sure of the first question
The second one which is why it discarted it is that because someone named Friedrich Wohler showed that it was possible to obtain an organic compound in the laboratory.
