Answer:
DID NOT
UNDER STAND
Explan it a littlebit
5. The value of a car decreases by 15% each
year. Estimate the value of a car originally
bought for GH¢6
,000.00, after four years
Answer:
the car is worth $2,400
Explanation:
6000*15%=900
900*4=3600
6000-3600=2400
From which evidence can a forensic expert extract DNA?
Answer:
The biological material used to determine a DNA profile include blood, semen, saliva, urine, feces, hair, teeth, bone, tissue and cells.
Explanation:
Answer:
bone
Explanation:
[tex]\huge\sf\underline\blue{⚓☠Question ☠}[/tex]
An electric iron consumes energy at a rate of 840 W when heating is at the maximum rate and 360 W when the heating is at the minimum. The voltage is 220 V. What are the current and the resistance in each case?
Don't spam
Answer:
See Explanation
Explanation:
We know that;
P= IV
Where;
P = power
I= current
V = voltage
Here, we have a voltage of 220V
Hence, for maximum rate;
P= IV
I = P/V
P = 840 W
V= 220 V
I= 840 W/220 V
I= 3.8 A
V = IR
R = V/I
R = 220/3.8
R = 57.9 Ω
For minimum heating;
P= 360 W
V= 220 V
I = P/V
I = 360 W/220V
I= 1.6 A
V= IR
R = V/I
R = 220 V/1.6 A
R = 137.5 Ω
Which word describes both o2 and h2o?
Molecule
Solution
Atom
Compound
You can make your exercise harder (or easier) by using this _____ law(s) to design to the perfect workout
A. Second
B.First
C.Third
D.Combination of all three
Answer:
First
Explanation:
i took the test and its first
When a 6 Ω resistor is connected across the terminals of a 3 V battery, the number of coulombs passing through the resistor per second is
Answer:
Given that - R = 6 ohm
V = 3 volt
n = ?
so by ohms law , V = I X R
I = V \ R = 3 \ 6 = 0.5 A
we know that I = Q / T here t is 1 sec
Q = I X T = 0.5 X 1 = 0.5 C
By the law of quantization ,
Q = n x e
n = Q / e = 0.5 / 1.6 x 10 ^-19
n = 0.3125 x 10^19
hoped so u got the answer mark me as brainellist :)
Answer:
0.5/1.6×10^-19
Explanation:
formula for current is v
I R
3/6=0.5
charge if found by the product of current and time which is one second
0.5×1 =0.5
deficiency of n=no of charges×charge of electrons
0.5/1.6×10^-19
Is Smoke Abiotic or Biotic?
Answer: Smoke is Abiotic because it is not a living thing.
Explanation: Hopefully this helps u. Have a great rest of your day. I hope this is the right answer
What provides evidence that has helped earth scientists determine the age of the earth more precisely?
radioactive dating
atmospheric pressure
helium dating
earth’s distance from the moon
Answer:
the answer is radioactive dating
You are adding sugar to a cup of tea. What could you do to make the sugar dissolve
faster? (Select all that apply)
Stir/agitate
Heat the tea
Break the sugar into smaller parts
Keep adding more sugar
Answer:
Stir/agitate and heat the tea
Answer:
Stir the tea, Heat the tea, and Grind the sugar
Explanation:
Heating and stirring both increase the energy of the tea molecules, which increases interactions with the sugar. Grinding sugar allows more sugar molecules to be exposed to the solvent particles that dissolve them.
Question 2
True or false. In a parallel circuit the current remains the same everywhere.
A.False
B. True
Answer:
Its False
Explanation:
In parallel circuits the current splits up so each branch has a different effective resistance (in each of the separate branches one can use the series rule again). Due to this, the current isn't the same everywhere in a parallel circuit.
brainliest?
Geothermal energy is an alternative energy source, although it is not resourceful enough to replace more than a minor amount of the Earth’s energy needs. Why is this?
Answer: However, it is not resourceful enough to replace more than a minor amount of the Earth's energy needs. Drilling through the Earth to reach areas hot enough to create steam is possible, but very expensive and difficult. .
Explanation:
how is water useful to our body
Answer:
It keeps our body hydrated.
Explanation:
Energy can be ___ from one storage mechanism to another.
Answer:
Energy can be transferred from one storage mechanism to another.
An incident ray that passes through the vertex of a convex lens:
F
F
c
A. refracts inward, at an angle equal to the angle of incidence,
B. continues in a straight line without refracting.
C. refracts parallel to the axis of the lens,
D. refracts outward, at an angle equal to the angle of incidence.
How do you think the poet represents the tiger in his poem (The Tyger)? please no bit ly links
Answer:
“The Tyger” represents the evil and beauty too, “the forest of the night” represents unknown challenges, “the blacksmith” represents the creator and “the fearful symmetry” symbolizes the existence of both good and evil. Imagery: Imagery is used to make the readers perceive things with their five senses.
Explanation:
What is the answer for this question?
Answer:
6 watts
Explanation:
hours against watts
I'm not sure though
5. What is the frequency of a sound wave when the speed of the sound is 340 m/s and has a wavelength of 1.21 m? 263 Hz 281 Hz O 328 Hz O 346 Hz
Answer:
281 Hz
Explanation:
I am so so sorry if this is wrong. But good luck and have a good day
A 25 N force stretches a spring 0.280 m. What was the spring constant?
Answer:
the spring constant is -89.2857 n/m
Explanation:
The computation of the spring constant is shown below:
As we know that
Force in newtons = Spring constant × amount of extension
F = -k × x
where
F = 25 N
And, x = 0.280m
So, the spring constant would 2
= 25N ÷ 0.280 m
= -89.2857 n/m
Hence the spring constant is -89.2857 n/m
hi, i know that this isnt neces sary. but can anyone request a ga mes for me, im bo red. thankyou.
Answer:
genshin impact. the same level. and AdCap
I believe the answer is D but wanted to make sure.
Answer:
Yes you are right
Explanation:
hope this helps and I get the Brain thingy whatever it call
The velocity versus time graph of particle A is tangent to the velocity versus time graph for particle B at point O. What is the acceleration of the particle A at point O?
A. -0.85 meters/second2
B. 1.16 meters/second2
C. -1.16 meters/second2
D. -0.9 meters/second2
Answer: C. -1.16 meters/second2
Explanation:
A= v/t (velocity/time)
in this case: v=7 and t=6
So, A= 7/6
A=1.16
The graph is decreasing so accelleration would be negative
A= -1.16 meters/second2
Option C! ; )
Answer:
-1.16 meters second^2
Explanation:
I got 100% on my test
Give 2 possible definitions of half-life
Answer:
the time taken for the radioactivity of a specific isotope to fall to half its original value.
the time required for any specific property (e.g. the concentration of a substance in the body) to decrease by half.
Explanation:
I don't know if that's what your looking for
A plumber is going to put two pipes in a wall, one in front and one in back. The pipes will be touching once they are installed. Both pipes are the same size and have the same number of molecules. The diagram above shows the pipes now, before they have touched. Use the information in the diagram to answer the question.
How does the temperature of the front pipe compare with the temperature of the back pipe before the pipes touch? What will happen after the pipes have been touching for a while?
Answer:
They become the same exact tempature
Explanation:
Since they got connected it should be the same.
the temperature of the front pipe compare with the temperature of the back pipe before the pipes touch by using same temperature.
what is temperature ?Temperature is the measure of hotness or coldness expressed in terms of any of several arbitrary scales and it indicate the direction in which heat energy will spontaneously flow from a hotter body to a colder body.
It is not the equivalent of the energy of a thermodynamic system like burning match is at a much higher temperature than an iceberg whereas the total heat energy contained in an iceberg.
Temperature which is similar to pressure or density known as intensive property that is independent of the quantity of matter is considered as distinguished from extensive properties, such as mass or volume.
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Lesson : LIGHT
Answer the following questions on the basis of given ray diagram.
1. Name the rays A and B.
2. Which ray has more speed ( A or B ) in the glass medium ?
3. Which phenomenon is shown in the given diagram ?
4. Ray B is bending more than the ray A. What is the reason behind it ?
~Thanks in advance! <3
Answer:
Explanation:
1. Both are refracted light.
2. B has more speed.
3. Dispersion
4. Lights of different wavelengths have different speed in prism. It causes the lights to refract at different angle; forming a color spectrum.
What's the difference between the period and the
circumference?
Answer:
The circumference of a circle is the distance around it (linear) while a period is the completion of a cycle or the length from one peak to the next of a periodic function
Explanation:
Circumference is the distance around a circle while period is the time taken for one revolution around the circle.
What is a Circle?This is a round plane figure whose points are equidistant from a fixed point. The circumference is total distance round the circle.
On the other hand, period refers to the time taken for one revolution around the circle.
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does the color of the color of the light change during refraction or reflection?
the color of light is called reflection
An ideal gas expands isothermally performing 4.30 x 10³ of work in the process. Calculate (a)
the change in internal energy of the gas, and (b) the heat absorbed during this expansion.
Answer:
The solution of the given query is explained below in the explanation portion.
Explanation:
Given value is:
Work,
⇒ [tex]W=4.30\times 10^3 \ J[/tex]
(a)
The change in the internal energy will be:
⇒ [tex]\Delta V=\frac{3}{2}nR(\Delta T)[/tex]
Throughout the isothermal procedure, The temperature will be constant "ΔT = 0".
then,
⇒ [tex]\Delta V = \frac{3}{2}nR(0)[/tex]
⇒ [tex]\Delta V = 0 \ J[/tex]
(b)
As we know,
⇒ [tex]\Delta V = Q-W[/tex]
On substituting the value, we get
⇒ [tex]0=Q-W[/tex]
On adding W both sides, we get
⇒ [tex]W=Q-W+W[/tex]
⇒ [tex]W=Q[/tex]
On substituting the given value of "W", we get
⇒ [tex]Q=4.30\times 10^3 \ J[/tex]
A force of 120 N is applied to the front of a sledge at an angle of 28.00 above the horizontal so as to pull the sledge a distance of 165 meters. How much work was done by the applied force?
Answer:
Workdone = 17482.36 Joules
Explanation:
Given the following data;
Force, F = 120 N
Angle, d = 28.0°
Distance, x = 165 m
To find the work done, we would use the following formula;
Workdone = FxCosd
Substituting into the formula, we have;
Workdone = 120*165*Cos(28)
Workdone = 19800 * 0.8830
Workdone = 17482.36 Joules
Why do we need satellites?
(There is no science colum)
Answer:
Because they provide information about clouds, oceans, land and ice.
A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is done?
The power used when a 100 N force is applied to move an object through a distance of 5 m at constant speed in 10 seconds is 50 W
We'll begin by calculating the energy. This can be obtained as follow:
Force (F) = 100 N
Distance (s) = 5 m
Energy (E) =?E = F × s
E = 100 × 5
E = 500 JFinally, we shall determine the power. This can be obtained as follow:
Energy (E) = 500 J
Time (t) = 10 s
Power (P) =?[tex]P = \frac{E}{t}\\\\P = \frac{500}{10}[/tex]
P = 50 WTherefore, the power used in moving the object is 50 W.
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