Answer:
Some of them
Explanation:
Some pelagic Birds can stay aloft for days or weeks at a time, and will even sleep in flight. in many Cases, true pelagic birds only return to land to nest and breed
what makes molecules move. A. covection. B. Radiation. C. Thermal or heat. D. conduction.
Answer:
the answer is C
Explanation:
how much potential energy is stored on a stone kept on the earth surface? Why?
Answer:
When the body is kept at the surface there height of the stone is equal to zero. hence, if the height of the stone is zero then Potential energy is equal to zero
Explanation:
If an electromagnetic wave has a frequency of 6 x 105 Hz, what is its
wavelength? Use 1 = The speed of light is 3 x 108 m/s.
f
v
A. 2 x 10-3 m
B. 5 x 1014 m
C. 5 x 102 m
D. 2 x 1012 m
Answer:
500 m
Explanation:
Applying,
v = λf.................... Equation 1
Where v = speed of light, λ = wave length, f = frequency of light.
make λ the subject of the equation
λ = v/f............... Equation 2
From the question,
Given: v = 3×10⁸ m/s, f = 6×10⁵ Hz
Substitute these values into equation 2
λ = 3×10⁸/6×10⁵
λ = 500 m
g You shine orange laser light that has a wavelength of 600 nm through a narrow slit. The slit forms a diffraction pattern on a distant screen that has been set up behind the slit. The first dark fringe in the diffraction pattern is 4.0 cm from the center point of the pattern. If you replace the orange laser with an unknown laser and observe that the second dark fringe of the diffraction pattern appear at 4.0 cm from the center point, what is the wavelength of the unknown laser
Answer:
λ = 3 10⁻⁷ m, UV laser
Explanation:
The diffraction phenomenon is described by the expression
a sin θ = m λ
let's use trigonometry
tan θ = y / L
as in this phenomenon the angles are small
tan θ = [tex]\frac{sin \ \theta}{cos \ \theta}[/tex] = sin θ
sin θ = y / L
we substitute
a y / L = m λ
let's apply this equation to the initial data
a 0.04 / L = 1 600 10⁻⁹
a / L = 1.5 10⁻⁵
now they tell us that we change the laser and we have y = 0.04 m for m = 2
a 0.04 / L = 2 λ
a / L = 50 λ
we solve the two expression is
1.5 10⁻⁵ = 50 λ
λ = 1.5 10⁻⁵ / 50
λ = 3 10⁻⁷ m
UV laser
ejemplos de fisica teorica
Answer:
Campo (física)
Computación cuántica.
Conservación de la energía.
Cosmología física.
Cromodinámica cuántica.
Dinámica.
Electrodinámica cuántica.
Electroquímica cuántica.
An ideal spring is mounted horizontally, with its left end fixed. The force constant of the spring is 170 N/m. A glider of mass 1.2 kg is attached to the free end of the spring. The glider is pulled toward the right along a frictionless air track, and then released. Now the glider is moving in simple harmonic motion with amplitude 0.045 m. The motion is horizontal (one-dimensional). Suddenly, Slimer* holding an apple flies in and approaches the glider. Slimer drops the apple vertically onto the glider from a very small height. The apple sticks to the glider. The mass of the apple is 0.48 kg.
Required:
Calculate the new amplitude of the motion of the glider with apple if the apple is dropped at the moment when the glider passes through its equilibrium position, x = 0 m.
Answer:
Explanation:
First of all we shall find the velocity at equilibrium point of mass 1.2 kg .
It will be ω A , where ω is angular frequency and A is amplitude .
ω = √ ( k / m )
= √ (170 / 1.2 )
= 11.90 rad /s
amplitude A = .045 m
velocity at middle point ( maximum velocity ) = 11.9 x .045 m /s
= .5355 m /s
At middle point , no force acts so we can apply law of conservation of momentum
m₁ v₁ = ( m₁ + m₂ ) v
1.2 x .5355 = ( 1.2 + .48 ) x v
v = .3825 m /s
= 38.25 cm /s
Let new amplitude be A₁ .
1/2 m v² = 1/2 k A₁²
( 1.2 + .48 ) x v² = 170 x A₁²
( 1.2 + .48 ) x .3825² = 170 x A₁²
A₁ = .0379 m
New amplitude is .0379 m
how are force and motion related
1. A ford engine is provided with 80,000 W power by burning its fuel. The engine produces a kinetic energy of 96 kJ for 20 seconds before its cut out.
a. Calculate the output power by the engine in watts.
b. What is the efficiency of the engine?
c. Why is there a considerable difference in the power input and output?
Answer: a) 4800 W b) 6 % c) most of the energy of fuel is converted to heat in combustion engine
Explanation: a) Power P = W/t = 96 000 J / 20 s = 4800 W
b) efficiency η = P(putput) / P(intake) = 4800 W / 80000 W = 0,06
Answer the following: What is astronomy?
Answer:
Explanation:
The branch of science which deals with celestial objects, space, and the physical universe as a whole.
Answer:
The study of the stars, planets, and galaxies. People study astronomy to origins and evolution of our celestial objects and phenomena
Explanation:
Draw Aufbua diagram of sodium ion
Answer:
Aufbau diagram of sodium ion:
2s²,2p⁶,3s¹
1. A 2,000-turn solenoid is 65 cm long and has cross-sectional area 30 cm2. What rate of change of current will produce a 600 Volts emf in this solenoid.
Answer:
[tex]\frac{dI}{dt} = 2.59\ x\ 10^4\ A/s[/tex]
Explanation:
First, we will calculate the inductance of the solenoid by using the following formula:
[tex]L = \frac{\mu_o AN^2}{l}[/tex]
where,
L = self-inductance of solenoid = ?
μ₀ = permeability of free space = 4π x 10⁻⁷ N/A²
A = Cross-sectional area = 30 cm² = 3 x 10⁻³ m²
N = No. of turns = 2000
l = length = 65 cm = 0.65 m
Therefore,
[tex]L = \frac{(4\pi\ x\ 10^{-7}\ N/A^2)(3\ x\ 10^{-3}\ m^2)(2000)^2}{0.65\ m}\\\\L = 0.0232\ H[/tex]
Now, we will use Faraday's law to calculate the rate of change of current:
[tex]emf = L\frac{dI}{dt}\\\\ \frac{dI}{dt} =\frac{emf}{L} \\\\ \frac{dI}{dt} =\frac{600\ V}{0.0232\ H}\\\\ \frac{dI}{dt} = 2.59\ x\ 10^4\ A/s[/tex]
“Is it true or wrong to say that an automobile at rest can be accelerating very fast? Either yes or no explain it with mathematical background
Answer:
Yes.
a = dv/dt
but v might be zero in an instant.
Take the example of a pendulum.
Acceleration is defined as the rate of change of the velocity of the body. Yes, an automobile at rest can accelerate very fast.
What is acceleration?Acceleration is defined as the rate of change of the velocity of the body. Its unit is m/sec².It is a vector quantity. It requires both magnitudes as well as direction to define.
[tex]\rm a=\frac{dv}{dt}[/tex]
a is the acceleration of the body
dv is the change of velocity of the body
dt is the change in the time interval
The acceleration is defined as the change in velocity, and the slope of velocity is found as acceleration. It can be said that the body is at rest its velocity is zero.
The acceleration of the body can be increased when the body changes its direction. So the moment at which the body changes the direction the body is at rest after that the body can accelerate.
To learn more about acceleration refer to the link;
https://brainly.com/question/969842
How do you make a mirages?
Answer: when the ground is very hot and the air is cool. The hot ground warms a layer of air just above the ground. When the light moves through the cold air and into the layer of hot air it is refracted (bent). A layer of very warm air near the ground refracts the light from the sky nearly into a U-shaped bend.
Explanation:
The take-up reel of a cassette tape has a radius of 2.5 cm. Find the length of the tape that passes around the reel in 7.1 s when the reel rotates at an average angular speed of 1.9 rad/s.
Answer:
s = 0.337 m
Explanation:
First, we will find the angular displacement of the reel:
[tex]\theta = \omega t[/tex]
where,
θ = angular displacement = ?
ω = angular speed = 1.9 rad/s
t = time taken = 7.1 s
Therefore,
θ = (1.9\ rad/s)(7.1 s)
θ = 13.5 rad
Now, we will find out the length of tape:
s = rθ
where,
s = length of tape = ?
r = radius of reel = 2.5 cm = 0.025 m
Therefore,
s = (0.025 m)(13.5 rad)
s = 0.337 m
Bob uses a wheelbarrow to move soil from his garden to a new flowerbed. He exerts an average force of 185 N while pushing the wheelbarrow, and he does 6.1 kJ of work while moving each load of soil. How far is he moving the soil?
A. 0.026 m
B. 0.039 m
C. 26 m
B. 39 m
Answer:
A. reduce the amount of soil by one-half and apply the same amount of force
Explanation:
A truck with a mass of 1520 kg and moving with a speed of 16.0 m/s rear-ends a 663 kg car stopped at an intersection. The collision is approximately elastic since the car is in neutral, the brakes are off, the metal bumpers line up well and do not get damaged. Find the speed of both vehicles after the collision in meters per second. vcar
Answer:
Speed of truck after collision = 6.28 m/s
Speed of car after collision = 22.28 m/s
Explanation:
By law of conservation of momentum
momentum before collision = momentum after collision
[tex]m_1u_1+m_2u_2 = m_1v_1+m_2v_2\\plugging/values\\1520\times16+ 0= 1520\times v_1 + 663\times v_2\\24320= 1520v_1+663v_2[/tex]
Since, collision is elastic
[tex]16 = v_2-v_1///v_2 = v_1+16 ....(b)[/tex]
solving the above two equations we get
v_1 = 6.28 m/s and v_2 = 22.28 m/s
Speed of truck after collision = 6.28 m/s
Speed of car after collision = 22.28 m/s
This same experiment is performed on the international space station. What is the primary issue with performing this experiment in the absence of gravity
Answer:
Difference in experimental data.
Explanation:
There is difference of experimental value between the experiment that is performed on the earth and on the international space station because presence of gravity. The result of the experiment on the earth is different due to the presence of gravity that contributes in the result of the experiment as compared to international space station where no gravity is present so there is high difference of the numerical value of the result of both experiments of earth and international space station.
if 36C ofcharge pass through a write in 4s current is it carrying?
Answer:
The current flowing through the wire is 9 A.
Explanation:
Given;
quantity of charge passing through the wire, Q = 36 C
duration of the charge flow, t = 4 s
The current flowing through the wire is calculated as;
Q = It
I = Q / t
where;
I is the current flowing in the wire
I = 36/4
I = 9 A
Therefore, the current flowing through the wire is 9 A.
. Two identical vehicles traveling at the same speed are made to collide with barriers in an insurance company collision test. The first vehicle collides with a concrete barrier, and stops in a time of approximately 0.1 s. The second vehicle collides with a collapsible barrier, and comes to rest in about 1 second. Which object is subject to a larger force
Answer:
F₁ / F₂ = 10
therefore the first out is 10 times greater than the second barrier
Explanation:
For this exercise let's use the relationship between momentum and momentum.
I = F t = Δp
in this case the final velocity is zero
F t = 0 -m v₀
F = m v₀ / t
in order to answer the question we must assume that the two vehicles have the same mass and speed
concrete barrier
F₁ = -p₀ / 0.1
F₁ = - 10 p₀
barrier collapses
F₂ = -p₀ / 1
let's look for the relationship of the forces
F₁ / F₂ = 10
therefore the first out is 10 times greater than the second barrier
Which of the following is NOT a mental process?
Select one:
a. Walking on the beach
b. Solving the math problem
c. Thinking of the correct answer
d. Choosing the right answer
Answer:
Its A. Walking on the beach
Answer:
walking on a bench is the answer
Just a thought
If you had let’s say two pieces of glass one being much more rudder than the other, and you try to break the tougher glass with the other piece
Example: throwing a glass ball at a glass door
Question: is it possible to break a tougher piece of glass with a weaker piece of glass ?
Suspicion: I’m guessing at high speeds it’s possible but I’m not sure anyone care to put their input ?
Answer:
Explanation:
THE FOURTEEN WEEKS' COURSES
IN
NATURAL SCIENCE,
BY
J. DORMAN STEELE, A.M., PHI.D.
Fourteen Weeks iq Natural Philosophy,
Fourteen Weeks iq Ctlenqistry,
Fourteen Weeks iq Descriptive Astroqonqy,
Fourteel Weeks iq Popular Geology,
Fourteeq Weeks iQ2 Human P1ysiology,
Fourteen Weeks iq Zoology,
Fourteeq Weeks iq Botany,
A Key, containing Answers to the Questions
and Problems in Steele's I4 Weeks' Courses,
4 1ISTORIC4L SERIES,
ON THE PLAN OF STEELE'S 14 WEEKS IN THE SCIENCES.
A Brief History of the Urlited States,
A Brief History of France,
The same publishers also offer the following standard scientific
vworks, being more extended or difficult treatises than those of
Prof. Steele, though still of Academic grade.
Peck's Ganot's Natural Philosophy,
Porter's Principles of Chemistry,
Jarvis' Physiology and Laws of Healtl,
Wood's Botanist and Florist,
Clanlbers' Elenments of Zoology,
lcIqtyre's Astroqomy and tle Globes,
Page's. Elen~ents of Geology,
Entered according to Act of Congress, in the year 1869, by
A. S. BARNES & CO.,
In the Clerk's Office of the District Court of the United States
for the Southern District of New York.
sTERLE'S KEY.
What type of boundary creates earthquakes? What type of boundaries create volcanoes? Compare and contrast these two types of plate movements, and explain how these geologic events occur.
Answer:
The three types of plate boundaries are Convergent, Divergent and Transform.
The convergent plate boundary is when two plates move towards each other. In this case it has three possibilities:
An oceanic-continental convergent: In this case the the oceanic plate goes beneath the continental in a subduction zone. And due to this process, the continental crust crumples and forms mountains.
An oceanic-oceanic convergent: Here the denser plate goes beneath the other in a subduction zone.
A continental-continental convergent: And in this case the thickness of the crust doubles as the convergent makes mountains.
The divergent plate boundary is when two plates move away from each other. This type of plate boundaries happens between the same plate type, this way it has two possibilities:
An oceanic-oceanic divergent: In this case when two plates goes apart, the magma from the mantle goes up to fill the gap that the separation made.
A continental-continental divergent: And here it’s characterized by rift valleys.
The third and last type is the transform plate boundary. And this one happens when two plates slide along each other horizontally.
this is the correct answer
please mark brainliest
A Ring, a solid Cylinder and a solid sphere all having the same mass and the Same radius are held at the top of an inclined plane if the objects are roll without slipping and the (see the picture)between each object and the plane is 0.3 if they are released from an incloed plane at the same time which wal bee reach the bottom first?
Answer:
Since they all have the same mass and radius they all experience the same amount of torque.
Torque = moment of inertia * angular acceleration
The one with the smallest moment of inertia will experience the greatest angular acceleration and thus reach the bottom first.
I = M r^2 ring
I = 1/2 M r^2 cylinder
I = 2/5 M r^2 sphere
The sphere will reach the bottom first.
Who is your greatest scientist, and what was his or her achievement? « brainliest assured»
Answer:
My greatest scientist is David Baltimore.
Explanation:
David Baltimore is an American biologist, university administrator, and 1975 Nobel laureate in Physiology or Medicine. He is currently President Emeritus and Distinguished Professor of Biology at the California Institute of Technology, where he served as president from 1997 to 2006.
Hope I helped! Ask me anything if you have any questions. Brainiest plz!♥ Hope you make a 100%. Have a nice morning! -Amelia♥
You throw a tennis ball straight up. Air resistance can be neglected.
(a) The maximum height above your hand that the ball reaches is H. At what speed does the ball leave your hand?
(b) What is the speed of the ball when it is a height H/2 above your hand? Express your answer as a fraction of the speed at which it left your hand.
(c) At what height above your hand is the speed of the ball half as great as when it left your hand? Express your answer in terms of H.
Answer:
(a) [tex]\sqrt{2gH}[/tex]
(b) [tex]\sqrt{gH}[/tex]
(c) [tex]\frac{3u^{2}}{8g}[/tex]
Explanation:
The maximum height = H
(a) Let the speed of the ball as it leaves the hand is u.
Use third equation of motion
[tex]v^{2}=u^{2}+2as\\0 = u^{2}- 2 gH\\u=\sqrt{2 gH}[/tex]
(b) Let the speed of the ball at H/2 is v.
Use third equation of motion
[tex]v^{2}=u^{2}+2as\\v^{2} = u^{2}- 2 g\frac{H}{2}\\v^{2}=2 g H - gH = gH\\v =\sqrt{gH}[/tex]
(c) Let the height is h.
[tex]v^{2}=u^{2}+2as\\\frac{u^{2}}{4} = u^{2}- 2 gh \\\\2 g h = \frac{3u^{2}}{4}\\h =\frac{3u^{2}}{8g}[/tex]
If a small appliance is rated at a current of 10 amps and a voltage of 120 volts,
what is the power rating?
Answer:
P=1200watts
Explanation:
Power=voltage*current
V=120v
I=10A
P=120v*10A
P=1200watts
The correct option about power rating is, “1200 V”.
What is Power?The quantity of energy moved or transformed per unit of time is known as power, and its unit is "watt".
What are the different formulas for power?Power = Potential Difference × CurrentPower = ( Current )² × ResistancePower = ( Potential Difference )² / ResistanceHow to solve this question?We have given Potential Difference and current
So, we can use the formula which contain Potential Difference and current.
Which is,
Power = Potential Difference × Current
Power = 120 × 10 watts
Power = 1200 watts
Hence the power rating came out to be 1200 watt after solving.
Learn more about Electric Power here:
https://brainly.com/question/3631756
#SPJ2
Cora’s doctor suspects that she has acid reflux. He prescribes
for her.
Answer: antacids
Explanation: Excess acid secretion in the stomach often causes nausea, chest pain, and leaves a bitter taste in the mouth. Doctors perscribe antacids to neutralize the acid.
Answer: antacids
Explanation: Excess acid secretion in the stomach often causes nausea, chest pain, and leaves a bitter taste in the mouth. Doctors perscribe antacids to neutralize the acid.
सत्मार्ग र शान्तिले नै समाजलाई सभ्य बनाउँछ भन्ने विषयमा ५० शब्दसम्मको एउटा अनुच्छेद
लेख्नुहोस्।
Answer:
So you have a question
Explanation:
either way have a nice day
8 A car accelerates at a rate of 10m/s
for a time of 4s and it reaches a speed of 52m/s . calculate the initial value
Answer:
From the First Law of Motion
Vf = Vi + at
"It reaches a speed of 52m/s" meaning the Final speed Vf=52
a(acceleration)=10m/s²
t=4s
Applying the formula
52=Vi + 10(4)
Vi = 52-40
Vi = 12m/s
If a team of workers comes to a consensus, what probably happened in the meeting?
A. They compromised with each other to reach an agreement.
B. They disagreed and were unable to come to a decision.
OC. They were forced by their manager to follow a new policy.
O D. They all turned in their letters of resignation.
Answer:
A
Explanation:
A consensus is when you come to an agreement