Answer:
Assuming there is no heat loss to the surrounding.
Heat lost by iron equals heat gained by water.
0.2(450)(50-x)=0.2(4200)(x-30)
x=31.94 °C
Explanation:
Suppose a tank filled with water has a liquid column with a height of 10 meters. If the area is 2 square meters (2 m²), what's the force of gravity acting on the column of water?
Answer:
196000 N
Explanation:
The following data were obtained from the question:
Height (h) = 10 m
Area (A) = 2 m²
Force (F) =.?
Next, we shall determine the pressure in the tank.
This can be obtained as follow:
P = dgh
Where
P is the pressure.
d is the density of the liquid.
g is acceleration due to gravity
h is the height.
Height (h) = 10 m
Density (d) of water = 1000 kg/m³
Acceleration due to gravity (g) = 9.8 m/s²
Pressure (P) =...?
P = dgh
P = 1000 × 9.8 × 10
P = 98000 N/m²
Therefore, the pressure acting on the tank is 98000 N/m²
Finally, we shall determine the force of gravity acting on the column of water as follow:
Area (A) = 2 m²
Pressure (P) = 98000 N/m²
Force (F) =.?
Pressure (P) = Force (F) /Area (A)
P = F /A
98000 = F/ 2
Cross multiply
F = 98000 × 2
F = 196000 N
Therefore, the force of gravity acting on the column of water is 196000 N
What type of relationship exists between the length of a wire and the resistance, if all other factors remain the same?
OA.
Resistance is directly related to length.
OB.
Resistance is directly related to the square of the length.
O c. Resistance is inversely related to the length.
OD.
Resistance is inversely related to the square of the length.
Answer:
It is proportional or directly related....
HOPE YOU RATE THE ANSWER..PLS HELP. WILL MARK AS THE BRAINLIEST. PLS ANSWER STEP BY STEP.
Answer:12
Explanation:
its the way u read it
All objects, regardless of their mass, fall with the same rate of acceleration on
the moon.
A. True
B. False
Answer:
A -TRUE
Explanation:
The mass, size, and shape of the object are not a factor in describing the motion of the object. So all objects, regardless of size or shape or weight, free fall with the same acceleration.
What is a healthy way to cope with distress
Which part of the light waves does color correspond to?
Answer:
The colour of visible light depends on its wavelength. These wavelengths range from 700 nm at the red end of the spectrum to 400 nm at the violet end. Visible light waves are the only electromagnetic waves we can see. We see these waves as the colors of the rainbow.
Explanation:
Answer:
Visible Light Waves
Explanation:
If it were not for this, your car would be unable to move.
torque and traction
O centrifugal force and kinetic energy
centrifugal force and gravity
torque and centrifugal force
Answer:
centrifugal force and kinetic energy
Explanation:
Without centrifugal force and kinetic energy, a car would be unable to move.
A centrifugal force regulates the speed of the engine using spinning masses and causes radial movement when the engine changes speed.
The kinetic energy is the energy which an object possesses due to its motion and car also require kinetic energy to move.
Hence, the correct answer is centrifugal force and kinetic energy.
A TV set shoots out a beam of electrons. The beam current is 10A. How many electrons strike the TV screen in a minute.
Answer:
600 mC
Explanation:
The charge of an electron is 1.6 x 10-19C so for a current with 10 mA, the charge going to screen in one second is 10 mC
so number of electrons, n = (10 x 10-3)/(1.6 x 10-19) = 6.25 x 1016 so in a minute the charge is 10 * 60 = 600 mC
Answer:
Total charge, q = It = 10 A x 60 s = 600 C
We know that, q = ne
So no. of electrons, n = q/e = 600 / (1.6×10-19) = 375x1019
Johnathan wants to lift a 200N box onto a 5m ledge. How much work is done?
a. 1000 J
b. 40 J
c. 0.025 J
d. 195 J
Answer:
1000 J which agrees with answer a in your list of options
Explanation:
Recall the formula for work (W) as the force (F) applied times the distance (d) covered in the same direction of the force:
W = F * d
W = 200 N * 5 m = 1000 J
Question 38(Multiple Choice Worth 2 points)
[OSS.01]The theories surrounding the formation of our solar system are based on many
biased opinions
incorrect facts
non-testable data
scientific investigations
Answer:Scientific Investigations
Explanation:
used to measure mass
━━━━━━━☆☆━━━━━━━
▹ Answer
Kg is the unit used to measure mass.
▹ Step-by-Step Explanation
Kg stands for kilogram, and is the SI unit used to measure mass.
Hope this helps!
CloutAnswers ❁
━━━━━━━☆☆━━━━━━━
What kind of information would be published in the Occupational Outlook Handbook (OOH)?
training guides for a chosen field
religious demographics of workers in a chosen field
current job openings in a chosen field
prospects for growth in a chosen field
Answer:
Explanation:growth of field is according chatestrophic reactions in physics due to radiation of sun
When a cup of water, held upright, is dropped on the moon, the air makes the
cup fall faster than the water.
O A. True
B. False
Answer:
False
Explanation:
They both posses constant acceleration
B - False
hope this helps
12.
As the skydiver falls to Earth, her parachute helps her land safely by:
C. warming the
a. increasing air resistance
surrounding air
b. acting like a helium-filled balloon
d. blocking the Sun's rays
Answer: A
Explanation: How large a parachute is (in other words, the parachute's surface area) affects its air resistance, or drag force. ... In the case of these parachutes, the drag force is opposite to the force of gravity, so the drag force slows the parachutes down as they fall.
Answer:
a
Explanation:
a is the answer to that question, increasing air resistance surrounding air
I hope this was helpful
Photograph E shows a rechargeable torch. When a student shakes the torch, the magnet moves through the coil and back again. This induces a voltage across the ends of the coil. The voltage is used to provide current to recharge the battery. (a) Explain why a voltage is induced (b) State one way to increase this voltage
Answer:
a) according to Faraday's law , b) creating a faster movement, placing more turns on coil
Explanation:
a) The voltage is induced in the coil by the relative movement between it and the magnet, therefore according to Faraday's law
E = - d (B A) / dt
In this case, the magnet is involved, so the value of the magnetic field varies with time, since the number of lines that pass through the loop changes with movement.
This voltage creates a current that charges the battery
b) There are several ways to increase the voltage
* creating a faster movement, can be done by the user
* placing more turns on the coil, must be done by the manufacturer
When an object is fully magnetized, all of its magnetic domains will be ?
A
Facing random directions,
B
Facing opposite directions, split down the middle of the object.
С
Facing opposite directions every-other domain
D
All facing the same direction.
A researcher is studying traffic patterns at an intersection before an upcoming construction project. As part of this investigation, the researcher writes a scientific question, develops a procedure to observe traffic specifically at this intersection, and draws a conclusion. Which type of investigation is the researcher conducting? descriptive comparative experimental procedural
Answer:
Procedural is the answer
hope this helps
One of the satellites of Pluto has an orbit like _____. 1) the Earth's moon 2) Titan 3) the satellites of Uranus 4) the satellites of Jupiter
Answer:
the satellite of Uranus
Explanation:
The moon remains over one side of Pluto all the time and can never be seen from the other side of Pluto. like the satellites of Uranus, Charons orbit is perpendicular to Pluto orbital plane
Answer:
It's the satellites of Uranus
Explanation:
i got the same question
An object traveling at a velocity of 50 m/s comes to a stop in 10 seconds. What is the
object's acceleration?
a. 5 m/s/s
b. 5 m/s/s
C. 500 m/s/s
d. -500 m/s/s
Answer:
Hey there!
For this question, we use the acceleration formula:
A=V/T
A=-50/10
A=-5 m/s/s
Let me know if this helps :)
My grandmother lives 100m north of me. If I get in my car and drive to her house in 4s,
what was my average velocity?
a. 0.04 m/s
b. 2.5 m/s
c. 25 m/s north d. 250 in/s east
Answer:
(C) Average Velocity = 25 m/s due North
What is entropy need help ASAP pz
The industry that provides the service of people's experience,
knowledge, or skills is known as the tertiary or
Services industry.
Answer:
Explanation:
true
The industry which provides service to the experience, knowledge or skill of the people is known as tertiary or service industry. This statement is True.
What is Service industry?Tertiary industry provides services to its consumers which is also known as service industry/sector which is also known as service industry/sector.
This sector includes a wide range of activities ranging from commerce to administration, transportation, financial and real estate activities, business and personal services, education, health and social work.
Companies within a service industry provide specific products or services that satisfy a need or are otherwise useful to customers such as manufacturing or production, service industries do not rely on the sale of goods or physical products that they otherwise provide to the public. provide essential services.
Thus, the industry which provides service to the experience, knowledge or skill of the people is known as tertiary or service industry. This statement is True.
Learn more about Tertiary industry, here:
https://brainly.com/question/12918763
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What is one commonality among all Consumer Service jobs?
helping individuals live better lives
obtaining vocational training
providing individuals with tangible goods
working with people
HELP PLSSSSSSS ASAP FIRST CORRECT ANSWER WILL GET BRANLIST. A bunny accidentally knocks a basket of eggs off of a table. Luckily the basket lands safely on the floor with all the eggs unbroken. Air resistance is negligible. What is the acceleration of the egg-basket system in midair? A)The acceleration cannot be determined without knowing how hard the basket was pushed. B) Acceleration is downward and less than g because the eggs are light. C) The acceleration fluctuates because of the rolling of the eggs. D) Acceleration is downward with a magnitude of g because the system is a projectile.
Answer: i think is C
Explanation:
Because eggs do not have a good weight and the basket swings because not all eggs weigh the same there are small and large in the basket
I think it's this good luck :)
Answer:
Acceleration is downward with a magnitude of g because the system is a projectile.
Explanation:
In order to stop experimental subjects from trying to confirm the scientist's hypothesis, psychologists sometimes obtain written promises from participants to be honest maintain subject confidentiality deceive participants about the true purpose of the experiment allow people to choose when they want to leave the study remove participants from the study before it starts
Answer:
C deceive participants
Explanation:
It is ethical practice to come clean or tell the truth about being deceptive at the end of the study. They need to be told that they were deceived.
In order to stop experimental subjects from trying to confirm the scientist's hypothesis, psychologists sometimes deceive participants about the true purpose of the experiment. The correct option is C.
What is psychologists?Psychologists can help people learn to cope with stressful situations, overcome addictions, manage chronic illnesses, and administer tests and assessments that can aid in the diagnosis of a condition or reveal more about a person's thoughts, feelings, and behaviors.
Psychotherapy can be aided by both psychologists and psychiatrists.
However, most psychiatrists treat patients primarily through medication, whereas psychologists primarily treat patients through talk and/or behavioral therapy.
People seek the help of a clinical psychologist to deal with mood-related issues such as depression, mania, anger, or anxiety.
Psychologists sometimes deceive participants about the true purpose of the experiment in order to prevent experimental subjects from attempting to confirm the scientist's hypothesis.
Thus, the correct option is C.
For more details regarding psychologists, visit:
https://brainly.com/question/3833605
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How does it do? this photo
Answer: Its A because i had the same question and it was a
How many millimeters are 120 meters ? Help ! Please <3
As shown in the figure below, April enters a race. She runs leftward 100 m to her horse, then she rides 500m to her truck, then she drives 1000m in a total time of 120s. What is her average velocity over the 120s period?
Answer:
The answer is below
Explanation:
The average velocity is the ratio of total distance traveled to the total time taken to complete the distance. The International System of Units (SI) unit of velocity is the meter per second (m/s). The Velocity is given by the equation:
Velocity = total distance traveled / total time taken
The total distance traveled = Distance traveled by horse + distance traveled by truck + remaining distance traveled = 100 m + 500 m + 1000 m = 1600 m
Total time taken = 120 s
Velocity = total distance traveled / total time taken = 1600 m / 120 s = 13.33 m/s
Velocity = 13.33 m/s
If the cross-sectional area of a wire is decreased while all other factors remain the same, how will the resistance change?
OA
It will increase
OB.
It will decrease.
OC. It will go to zero.
OD
The cross-sectional area does not affect the resistance.
Answer:
The answer is OA it will increase.
Explanation:
PLS HELP. I WILL MARK U THE BRAINLIEST IF U ANSWER EVERYTHING STEP BY STEP AND CORRECTLY.
distance is the length of his trip so 15( 3+4+8)
displacement is how far he is from his original point ( -5)( -4^2 + 3^2 = 5^2) he was displaced 5 meters from his start position
