Answer:
I think it's B, I may not be right so take this with a grain of salt
Explanation:
Most individuals over 65 years of age
A constant current source supplies a electric current of 200 mA to a load of 2kΩ. When the load changed to 50Ω, the load current will be
8A
9mA
700mA
12A
Answer:
700ma
Explanation:
all u do is have to add them up.
Ohm's law allows us to calculate the result for the value of the current when we change the resistance of the circuit:
The current is: i = 8 A
Ohm's law establishes that voltage is proportional to current and we call the constant of proportionality resistance in a circuit.
V = i R
Where V is the voltage, i the current and R the resistance of the circuit.
They indicate that the source supplies a current of i = 200 mA = 0.200 A at a load of R = 2 kΩ = 2 10³ Ω
Let's find the source voltage.
V = 0.200 2 10³
v = 400 V
Now with this voltage let's find the current for the new load of R = 50 Ω
i = V / R
i = 400/50
i = 8 A
In conclusion using Ohm's law we can calculate the result for the value of the current when we change the resistance of the circuit is:
The current is: i = 8 A
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Two charges and are separated by 10cm on the x- axis. Q2 is at the origin and Q1 is 12cm to the right.
a. What is the net Electric Force (magnitude and direction) on Q2 due to Q1?
b. Calculate the magnitude and direction of the net electric field -2.0 cm to the left of Q2.
Answer:
Explanation:
Q₂ is at the origin and Q₁ is at 12 cm on x -axis
Force between Q₁ and Q₂
= K x Q₁ x Q₂ / .12 where k is a constant equal to 9x 10⁹
Force F = 9 x 10⁹ x Q₁ x Q₂ / .12²
= 625 x 10⁹ x Q₁Q₂ N
This is the force each one exerts on other . So electric force on Q₂ due to Q₁ is 625 x 10⁹ x Q₁Q₂ N . Its direction is towards left as both will repel each other.
b)
Electric field due to charge Q₂ at - 2 cm
= 9 x 10⁹ x Q₂ / .02²
= 22500 x 10⁹ x Q₂ N/C , towards left .
Electric field due to charge Q₁ at - 2 cm
= 9 x 10⁹ x Q₁ / .14²
= 459.18 x 10⁹ x Q₁ N/C , towards left
As both the fields are to the same direction
Net field = 75 x 10⁹ x Q₂ + 459.18 x 10⁹ x Q₁
10⁹ ( 22500 x Q₂ + 459.18 x Q₁ ) N/C .
Direction will be towards left.
PLEASE HELP!!!!! ILL GIVE BRAINIEST IF ANSWER IS CORRECT!!!!
An electron is pushed eastwards with a force of 1.64 x 10-21 N when placed in an electric
field. Determine the
(a) magnitude and
(b) direction of the electric field.
Answer: 1.02 x 10^-2 N/C to the east
Explanation:
Hi,
To find the magnitude of the electric field in this problem, you simply have to use the formula F = qE
F = Force
q = charge of the particle
E = magnitude of the electric field
Here, we are told that a force is being acted on an electron and we aren't told any specific quantity of charge for the electron. Therefore, we can assume that the charge of the electron will be its conventional charge of 1.602 x 10^-19 C
We are also given the force which is 1.64 x 10^-21 N
We solve for E
E = F/q
We plug in
E = (1.64 x 10^-21 N)/(1.602 x 10^-19 C)
E = 1.02 x 10^-2 N/C
The direction will be the east because the angle didn't change.
one way we can care for our ear
keep your ear clean....
Good luck on your assignment and enjoy your day!
A ball hangs on a string. The force of tension (Ft) in the string is 15n. The force due to gravity (Fg) pulls the ball down with a force of 15 N. Show your work.
Answer: 0N
Explanation: 15N-15N =0N
they are a balanced force,meaning they canceled each other out.
Which chemical formula represents the composition of a mineral that usually exhibits fracture, not cleavage?
Mg3Si4010(OH)2
NaCi
CaCo3
(Fe,Mg)2Si04
Answer:
(Fe,Mg)2SiO4
Explanation:
Trust
The chemical formula that represents a mineral which exhibits fracture is
( D) : ( Fe, Mg )2SiO₄
Minerals that exhibit fracture break across its curved surfaces due to the absence of weak points along the minerals. Such breaks occur irregularly and produce irregular shapes.
Fractures occur in fine-grained minerals and also some crystalline minerals. and from the options the chemical formula that represents a mineral which exhibits fracture is ( Fe, Mg )2SiO₄.
Hence we can conclude that The chemical formula that represents a mineral which exhibits fracture is ( Fe, Mg )2SiO₄
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In the image below, a worker is pushing a crate with a mass of 25 kg up a ramp at a constant rate. Ignoring friction, how much force must the worker apply so that the crate continues to move at the same speed? (Recall that g =
9.8 m/s2)
A. 35.3N
B. 83.8N
C. 50.2N
D. 16.2N
The image is missing, so i have attached it.
Answer:
B. 83.8N
Explanation:
The mass of the worker is 25 kg
From the image, the angle of the ramp is 20°
To find the force that the worker must apply to make the crate continue to move at the same speed, we will use the formula;
F = mg sin θ
F = 25 × 9.8 × sin 20
F ≈ 83.8 N
A ball is thrown with an initial vertical velocity of 16 m/s and an initial horizontal velocity of 5 m/s. Calculate its vertical velocity at the peak of its path.
Answer: What are the options to the quest
ions
Explanation:
Which gravitational force field diagram is drawn correctly?
Answer:
I think it is B so sorry if it is wrong
Explanation:
Edit: its definitely B I looked it up to make sure
The Answer Is B.
I Just Did The Test. I Got IT Right :)
2. The car slows down from 36 m/s to 15 m/s over a 3.0 second time interval. What is its average acceleration?
Answer:
9 meter per second square
Explanation:
acceleration equation is final minus initial velocity divided by time in seconds.
36-15/3=9 meter per second square.
Answer:
wendys
Explanation:nutz go in yo mouth
A lift moves up and down with an acceleration of 3 metre per second square .in each case calculate the relation of the floor on each man of mass 50 kg standing on a lift.
Answer:
[tex]150\ N[/tex]
Explanation:
[tex]We\ are\ given:\\Acceleration\ of\ the\ elevator= 3\ m/s^2\\Assumed\ mass\ of\ the\ man\ standing\ on\ it=50\ kg\\We\ know\ that,\\Force=Mass*Acceleration\\Or,\\F=ma\\Hence,\\Substituting\ m=50, a=3\ m/s^2,\\Force\ acting\ on\ the\ floor\ of\ the\ elevator=3*50=150\ Newtons[/tex]
Timed plz hurry
Research indicates that individuals experiencing depression often experience anxiety disorders.
Please select the best answer from the choices provided
T/f?
Answer:
True
Explanation:
Research indicating that individuals experiencing depression often experience anxiety disorders is a true statement.
What is Depression?
This health disorder is characterized by loss of interest in activities as a result of depressed mood.
Individuals who have depression often experience anxiety disorders such as panic attacks etc.
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What is the length of AC?
1-Which is a true statement?
The nucleus is found in the center of atoms and contain protons and electrons
The nucleus is found in the center of atoms and contain protons and neutrons
Electrons have a neutral charge
Neutrons have a negative charge
2-What is the role of electrons within an atom?
Electrons are in the nucleus and have a negative charge
Electrons are in the nucleus and have a positive charge
Electrons are outside nucleus and have a negative charge
Electrons are outside nucleus and have a positive charge
Answer:
1 - The nucleus is found in the center of atoms and contains protons and neutrons.
2 - Electrons are outside (orbit) the nucleus and have a negative charge.
Explanation:
Protons are positively charged.
Neutrons are neutral.
Electrons are negatively charged.
I hope that helps!! ^-^
2. Calculate the kinetic energy of a football being launched downfield by Patrick Mahomes. The football has a mass of .5 kg and is thrown at a velocity of 25 m/s. Find the kinetic energy.
Answer:
K.E = 156.25 Joules.
Explanation:
Given the following data;
Mass = 0.5kg
Velocity = 25 m/s
To find the kinetic energy;
Kinetic energy can be defined as an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
[tex] K.E = \frac{1}{2}MV^{2}[/tex]
Where;
K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents velocity measured in metres per seconds square.
Substituting into the equation, we have;
[tex] K.E = \frac{1}{2}0.5*25^{2}[/tex]
[tex] K.E = 0.25 * 625 [/tex]
K.E = 156.25 Joules.
Explain why a tractor's big tyres stop it sinking too
far into soft soil.
big tires
Explanation:
Answer: Tractors with big tyres have larger contact area on ground. Since the area is large, the pressure acting becomes small and it can roll on ground easily with out the danger of sinking in ground.
Three vectors A,B and C are such that A=B+C and their magnitudes are 5,4 and 3 respectively.find the angle between A and C
Answer:
B = A - C
=> B² = A² + C² - 2AC.cos(A,C)
=>
[tex]cos(a.c) = \frac{a {}^{2} + c {}^{2} - b {}^{2} }{2ac} = \frac{5 {}^{2} +3 {}^{2} - 4 {}^{2} }{2.5.3} = \frac{3}{5} [/tex]
=> angle between A and C = 53.13⁰
These steps are followed when using the half-life of carbon-14 to determine the age of an object that contains carbon. what is the correct order of these steps
Answer:
the answer is b
Explanation:
a p e x
The correct order of these steps is according to option B i.e. C, A, B
What is half life?Half life is the time taken by a radioactive material for the radioactivity of to reduce by half its original value.
The half life equation is:
A = A₀ (½)^(t / T)
where A is the final amount, A₀ is the initial amount, t is the amount of time, and T is the half life.
These steps are followed when using the half-life of carbon-14 to determine the age of an object that contains carbon.
The correct steps are -
Measure the ratio of parent and daughter nucleiUse the half life of carbon-14 to determine the number of half lives that have passed.Use the number of half lives passed to determining the age of the object.Thus, the correct option is B i.e. C, A, B
Learn more about half life.
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Planet RMM-1 has a mass of 28,500 kg and the star it revolves around has
a mass of 2.20 x 10^8 kg. If the star emits a gravitational force of 39 N how
far away are the two objects from each other?
Gravitational force = G · (mass₁) · (mass₂) / (distance)
(distance²) = G · (mass₁) · (mass₂) / (Gravitational force)
G = 6.67 x 10⁻¹¹ n-m² / kg² (the "gravitational constant")
Distance² = (6.67 x 10⁻¹¹ n-m² / kg²) (28,500 kg) (2.2 x 10⁸ kg) / (39 N)
Distance² = (6.67 · 28,500 · 2.2 x 10⁻³ N-m²) / (39N)
Distance² = (418.209 N-m²) / (39N)
Distance² = 10.72 m²
Distance = 3.275 meters
An absurd scenario, but that's by golly what the math says with the numbers provided. I guess it's a teeny tiny planet orbiting 3.275 meters outside a teeny tiny black hole.
MG
Examine the graphs below.
Ta seconds)
B
Time in seconds
D
Time in seconds)
Time in seconds)
Which of the graphs shows that one of runners started 10 yards further ahead of the
other? Explain your answer.
Answer:
Where are the graphs
Explanation:
PLEASE HELP While the Earth is revolving around the sun, less direct sunlight is reaching the Northern Hemisphere than the Southern Hemisphere. What season is it in the Northern Hemisphere?(1 point)
winter
autumn
spring
summer
Answer:
Winter
Explanation:
Earth Rotates about an axis
..
David rides his bike with a
constant speed of 10 km/h.
How far can he travel in 1 1/2
hours?
T
The water hyacinth was a major weed in Australian
and overseas' waterways until biological control
was used. Looking at the photo below, what
impact would this weed have on biodiversity in the
waterways it infests?
Whoever answers i will give branliest
explain in details the concept of economic geography
Answer:
In the words of Hartshorn and Alexander: “Economic Geography is the study of the spatial variation on the earth’s surface of activities related to producing, exchanging and consuming goods and services. Whenever possible the goal is to develop generalizations and theories to account for these spatial variations.”
Explanation:
Which is an example of a non-contact force?
A. A woman pulls open a door.
B. A magnet pulls an item toward it.
C. A student pushes his chair in at his desk.
D. A rolling ball slows down from friction
! Will give brainliest if you help !
Answer:
B - magnet pulls an item toward it.
Explanation:
It's the answer trust bro
Answer:
B.
Explanation:
Because your not physically touching the item getting pulled towards the magnet. hope this helps
HELPPP PLS BESTIES A pattern of stars that has been named is called a constellation. One winter evening, Jason found the star called Sirius in the constellation called Canis Major.
If Jason came outside again a few hours later, what would the stars in Canis Major look like?
A. The pattern would be smaller because the stars moved closer together.
B. The pattern would change because each star would have moved in a different direction.
C. The pattern of stars would appear to be in the same place in the sky.
D. The pattern of stars would appear to have moved together across the sky.
Answer:
D) Since the stars would move from East to West just as the Sun and Moon do.
am soo confused what is conclusions in physics
Random question, if Tanjoro, Zenitsu, and other Demon Slayers can conjure elements with their swords, then can we do the same?
A) HELL YA, WATER SURFACE SLASHHHHHHHHHHHHHHHHH
B) Their freakin' anime characters... oF cOuRsE wE cAn (⌐■_■)
C) These physics don't match up...
D) Their freakin' anime characters... of course not..
Answer:
HELL YA, WATER SURFACE SLASHHHHHHHHHHHHHHHHH
Explanation:
-takes some random sword and tries to do water breathing- Nope, doesn't work q-q
Answer:
Explanation: BOTH A AND B
HELL YA, WATER SURFACE SLASHHHHHHHHHHHHHHHHH
Their freakin' anime characters... oF cOuRsE wE cAn (⌐■_■)
A skydiver has jumped out of an aircraft but has not yet opened her
parachute.
Which of these statements best describes what is happening?
1. She is pushed towards the Earth by the force of gravity.
2.She is pulled towards the Earth by the force of gravity.
3.She is pulled towards the Earth by air resistance.
4. She is pushed towards the Earth by air resistance.
Answer:
She is pulled towards the Earth by the force of gravity.
Explanation:
As a skydiver jumps, gravity pulls them towards the earth, accelerating their fall. At the same time, air resistance is pushing back on them and increases at higher speeds. ... At this point, they will have reached terminal velocity and will fall at a constant speed, no longer accelerating.
The statement (2) She is pulled towards the Earth by the force of gravity is correct.
What is gravitational force?The gravitational force is a force that attracts all mass-bearing objects. The gravitational force is referred to as attractive because it always strives to pull masses together rather than pushing them apart.
A skydiver has jumped out of an aircraft but has not yet opened her parachute.
As we know, the gravitational force is given by:
[tex]\rm F = \dfrac{Gm_1m_2}{r^2}[/tex]
Where, G is the gravitational constant.
m1 and m2 are masses.
r is the distance between the masses.
The statement (2) She is pulled towards the Earth by the force of gravity best describes what is happening.
Because the force of gravity pulled the skydiver.
Thus, the statement (2) She is pulled towards the Earth by the force of gravity is correct.
Learn more about the gravitational force here:
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