Given :
Reem took a wire of length 10 cm. Her friend Nain took a wire of 5 cm of the same material and thickness both of them connected with wires as shown in the circuit given in figure. The current flowing in both the circuits is the same.
To Find :
Will the heat produced in both the cases be equal.
Solution :
Heat released is given by :
H = i²Rt
Here, R is resistance and is given by :
[tex]R = \dfrac{\rho L}{A}[/tex]
So,
[tex]H = i^2\times \dfrac{\rho L}{A} t\\\\H = \dfrac{i^2\rho Lt}{A}[/tex]
Now, in the question every thing is constant except for the length of the wire and from above equation heat is directly proportional to the length of the wire.
So, heat produced by Reem's wire is more than Nain one.
Hence, this is the required solution.
What causes the attraction between protons and neutrons?
Answer:
The nuclear force
Explanation:
hope this helps
HEEEEELLLPPPPPP!!!!!!!!!!! PPPPPPPPPPPLLLEAASSEE!!!
I will give brainliest
Why do the north poles of these two magnets repel each other?
Answer:
The arrows always start at the magnet's north pole and point towards its south pole. When two like-poles point together, the arrows from the two magnets point in OPPOSITE directions and the field lines cannot join up. So the magnets will push apart (repel).
19. What ingredient makes Electronic Cigarettes and Traditional Ones addictive?
(5 Points)
Tar
Nicotine
Chemicals
all of the above
Answer:
it is nicotine
Explanation:
your welcome
Answer:
Nicotine
Explanation:
Which of the following epidermal layers is made of cells that are constantly dividing?
a. stratum corneum
c. stratum spinosum
b. stratum granulosum
d. stratum basale
epidermal layer is made of basal cell layer that are consulting dividing
Jackson ran in a marathon for 3 hours. The marathon was 185 miles long. How fast was the runner running?
Answer:
hgt tdyrghgcderhgfe
Explanation:
rghttyhhhggggftttgf d's weyhvfswertfcdsettyhgftgdfvhgg fee e4y
A skier descends a mountain at an angle of 35.0º to the horizontal. If the mountain is 235 m long, what are the horizontal and vertical components of the skier's displacement?
Question 4 Multiple Choice Worth 4 points)
(02.02 MC)
How do weathering and deposition differ?
Answer:
its A Weathering breaks down rocks; deposition leaves them in new places
Explanation:
A crane moves a 250 kg scoreboard from the ground to the height of 100 m. What is the work done on the scoreboard?
Answer:
You will have to do the last PE - the initial PE
Explanation:
A boat with a horizontal tow rope pulls a waterskier. She skis off to the side, the rope makes an angle of 15° with the forward direction of motion. If the tension in the rope is 180 N, how much work does the rope two on the scare during the forward displacement of 300 m?
Answer:
13,976.23JoulesExplanation:
Workdone by the rope is expressed using the formula;
W = Fd sin(theta)
F is the tension in the rope = 180
d is the displacement = 300m
theta is the angle of inclination = 15°
Substitute the given parameters into the formula;
W = 180(300)sin15
W = 54000sin 15
W = 13,976.23
Hence the workdone by the rope is 13,976.23Joules
When your teacher drops a 1.5kg book from rest, it speeds up as it falls down suppose that book hits the ground at a speed of 5m/s what hight was it dropped from
Answer:
The height in which the book is dropped from is 1.28 m.
Explanation:
Mass of the book, m = 1.5 kg
initial velocity of the book, u = 0
final velocity of the bok, v = 5 m/s
The height in which the book is dropped from is given by;
v² = u² + 2gh
v² = 0 + 2gh
v² = 2gh
h = v² / 2g
h = (5)² / (2 x 9.8)
h = 1.28 m
Therefore, the height in which the book is dropped from is 1.28 m.
Which of the following statements about the unit of measurement called the Newton is true? Select the two correct answers.(1 point)
As an object's distance from Earth increases, its Newtons increase.
The Newton is used to measure gravitational force.
The Newton is used to measure mass of objects.
An object with a mass of 1 kilogram has a gravitational attraction to Earth of about 9.8 Newtons.
Answer:
The Newton is used to measure gravitational force.
An object with a mass of 1 kilogram has a gravitational attraction to Earth of about 9.8 Newtons.
Explanation:
The two true correct statements about the unit of measurement called the Newton are ,
Newton used to measure gravitational force.
An object with a mass of 1 kilogram has a gravitational attraction to Earth of about 9.8 Newtons.
Therefore the correct answers are the option c and option D
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
The mathematical expression for Newton's second law is as follows
F = ma
Where F represents the force.
The SI unit of force is Newton.
Newton used to measure gravitational force.
An object with a mass of 1 kilogram has a gravitational attraction to Earth of about 9.8 Newtons.
Thus, the correct answers are the option C and option D
To learn more about Newton's second law, refer to the link here;
brainly.com/question/13447525
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The body loses up to 40 percent of its body heat through the _____ area
Answer:
the correct answer is ( head ) just took it
The body loses up to 40 percent of its body heat through the head area.
What is heat loss rate?The heat transferred to the surrounding by the thermal conductive substance per unit time.
40 to 45 percent of human body heat is lost through the head and neck due to increased blood flow as compared to the rest of the body.
Along with the wrists and ankles, this can be 60 percent.
Thus, the body loses up to 40 percent of its body heat through the head area.
Learn more about heat loss rate.
https://brainly.com/question/6850851
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The engine of a boat (m = 1580 kg) exerts a
2200 N force northward, while the current
pushes it 1350 N eastward.
In what direction does the boat accelerate?
Answer:
58.5
Explanation: no clue on how to do it but i just got that answer on my accelus✨
To solve this problem we must use Newton's second law, which tells us that the sum of forces on a body is equal to the product of mass by acceleration. The direction of the boat is northward and its magnitude is 1.633 m/s².
What is acceleration?An object is said to be accelerated if there is a change in its velocity. The rate of change of velocity with respect to time is known as the velocity. It is a vector quantity and it has both magnitude and direction. It is the first derivative of velocity with respect to time.
Fx = 2200 [N]
Fa = 1350 [N]
F = √(Fₓ)² + (Fₐ)²
F = √(2200)² + (1350)²
F = 2581.18 N
Now using Newton's second law.
F = m×a
a = F / m
a = 2581.18 / 1580
a = 1.633 m/s²
Thus acceleration is 1.633 m/s² and it is northward direction.
To know more about acceleration, visit;
https://brainly.com/question/28743430
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If you want to increase the acceleration of a baseball when you throw it, what must you increase to make this happen?
A. Acceleration
B. Newton's 2nd law
C. Force
B. Mass
Answer: I think c force
Explanation:
katniss shoots an arrow horizontally frok a height of 1.8m. if the arrows initial velocity is 32m/s , how far will the arrow travel before hitting the ground
Answer:
19.5 m
Explanation:
EN LANZAMIENTO DE PROYECTILES, LA VELOCIDAD HORIZONTAL
PERMANECE CONSTANTE.
PRIMERO ENCUENTRA LA VELOCIDAD VERTICAL
[tex]v^{2}[/tex]y = 2([tex]9.80 m/s^{2}[/tex])(1.8 m) = [tex]\sqrt{35.3 m^{2}/s^{2}}[/tex] = 5.94 m/s
LUEGO ENCUENTRAS EL TIEMPO QUE LA FLECHA PERMANECE EN EL
AIRE.
t = 5.94 m/s /[tex]9.80 m/s^{2}[/tex] = 0.61 s
FINALMENTE ENCUENTRAS LA DISTANCIA HORIZONTAL TOTAL.
x = 32 m/s(0.61 s) = 19.5 m
Which one is it
Plz help me :)
Answer:
5 I think will be none of the above and 6 could be all of the above
Obi Wan Kenobi is force pushing some bad guys into a forcefield. The bad guys (m= 300 kg) were originally at REST 5 meters away from the forcefield. It took them 0.5 seconds to hit the forcefield. How much force does Obi Wan apply?
Answer:
F = 12000 N = 12 KN
Explanation:
First we need to find the acceleration of the bad boys by using second equation of motion:
s = Vi t + (1/2)at²
where,
s = distance covered = 5 m
Vi = Initial Velocity = 0 m/s
t = time taken = 0.5 s
a = acceleration = ?
Therefore,
5 m = (0 m/s)(0.5 s) + (1/2)a(0.5 s)²
a = 2(5 m)/(0.5 s)²
a = 40 m/s²
Now, we calculate the force applied by Newton's Second Law:
F = ma
where,
F = force = ?
m = mass of bad guys = 300 kg
Therefore,
F = (300 kg)(40 m/s²)
F = 12000 N = 12 KN
The question and answer options are in the photo!
WILL GIVE BRAINLIEST (c) 3 pts. In order to stop the evil Magneto, Jean Grey needs to fly from
rest on the ground to the top of the Statue of Liberty (46 m) in 2.0
seconds. What is her minimum average acceleration during her
ascent? Assume constant
acceleration for the entire distance and that
she does not decelerate near the top.
Answer:
Acceleration, [tex]a=23\ m/s^2[/tex]
Explanation:
Given that,
The statue of Liberty is at a height of 46 m.
Jean Grey needs to fly from rest on the ground to the top of the Statue of Liberty (46 m) in 2.0 seconds.
We need to find her minimum average acceleration during her ascent. Let it is t. Using the second equation of motion to find it.
[tex]h=ut+\dfrac{1}{2}at^2\\\\h=\dfrac{1}{2}at^2\\\\a=\dfrac{2h}{t^2}\\\\a=\dfrac{2\times 46}{(2)^2}\\\\a=23\ m/s^2[/tex]
So, the constant acceleration is [tex]23\ m/s^2[/tex] for the entire distance.
300 watts of power is produced over 15 seconds. How much work was done transferring the power?
Answer:
4500
Explanation:
Formula: power x time
300 x 15 = 4500
Which climate will have better soil for plant growth? warm or cold climate?, and why.
Answer:
Agriculturally suitable lands have adequate precipitation and moderate temperatures as well as good soils. Farmers regularly have to contend with wet and dry events to grow crops, even in hospitable climates.
Explanation:
Choose the pair of elements that will most likely have the least ionic character.
a. Na and Cl
b. O and Cl
c. H and O
d. Na and O
Answer:
b. O and Cl
Explanation:
A basketball rolls down a hill until it comes to a stop in a ditch
A. 1st Law of motion
B. 2nd Law of motion
C. 3rd Law of motion
Answer:
1st law.
Explanation:
If a wave’s frequency is 16Hz and it’s wavelength is 10m. What’s the waves speed?
Answer:
160J
Explanation:
Given parameters:
Frequency = 16Hz
Wavelength = 10m
Unknown:
Waves speed = ?
Solution:
Waves speed is the product of frequency and wavelength;
Waves speed = fλ
f is the frequency
λ is the wavelength
Now insert the parameters and solve;
Waves speed = 16 x 10 = 160J
10. A car starts from rest and travels for 5.0 s with a constant acceleration of -1.5 m/s/s.
A. What is the final velocity of the car?
B. How far does the car travel in this time interval?
Answer:
a.-7.5 m/s
b.18.75 m
Explanation:
hope it helps
Steve and Jose drove Jose's car to the beach during Spring Break. The 495 kilometer drive took them 8 hours and 30 minutes. What was their average speed for the trip?
Answer:
58.24 Km/h.
Explanation:
From the question given above, the following data were obtained:
Distance (d) = 495 Km
Time (t) = 8 h 30 mins
Speed (S) =?
Next, we shall express 8 hours 30 mins to hours.
We'll begin by convert 30 mins to hour.
60 mins = 1 h
Therefore,
30 mins = 30 mins × 1 h/ 60 mins
30 mins = 0.5 hour.
Thus,
8 h 30 min = 8 + 0.5 = 8.5 hours
Speed is define as the distance travelled per unit time. Mathematically, it is expressed as:
Speed = Distance /time
With the above formula, we can obtain the speed as shown below:
Distance (d) = 495 Km
Time (t) = 8.5 hour
Speed (S) =?
Speed = Distance /time
Speed = 495 Km / 8.5 hour
Speed = 58.24 Km/h
Thus, the speed is 58.24 Km/h.
scientific laws explain _________
a) why a pattern in nature occurs
b) strong evidence in support of a hypothesis
c) how a pattern in nature occurs
d) a pattern in nature observed over and over
Answer:
Answer:
Explanation:
Explanation:
I think its D.
Which of the following examples shows the greatest amount of biodiversity
Question 2 options:
A large amount of salmon swimming upstream
A lake full of a larger variety of fish, frogs, and birds
A densely populated city full of all different kinds of people
An empty field where only grass and insects are living
Answer:
A lake full of a larger variety of fish, frogs, and birds
Please help! I really need it.
I believe the answer is Justine, correct me if I’m wrong.
What happens in the gray zone between solid and liquid?
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Please Answer the question to get them
Answer:
Hence from liquid to solid or solid to liquid the transition has to cross the grey zone. This grey zone transition is is very crucial which includes the intermolecular forces acting on the molecules and each atoms which makes the change in state from hot to cold and cold to hot.
Explanation: