a pulley system with a diameter of 0.5 meters lifts an object 736 meters in 1.05 minutes. how many radians did the pulley move ? how many revolutions did the pulley make ? what was the angular velocity? what was the linear velocity ?
Answers
its b welcome
Explanation:
Related Questions
How to Tell If an Element Is Paramagnetic or Diamagnetic
Answers
To determine if an element is paramagnetic or diamagnetic, one can perform a magnetic susceptibility test.
Paramagnetic and diamagnetic elements refer to the magnetic properties of elements and molecules. Paramagnetic materials are attracted to a magnetic field, while diamagnetic materials are repelled by a magnetic field.
Paramagnetic substances have a positive magnetic susceptibility, meaning they are attracted to a magnetic field and experience an increase in magnetic polarization. Diamagnetic substances have a negative magnetic susceptibility, meaning they are repelled by a magnetic field and experience a decrease in magnetic polarization.
Another way to determine the magnetic properties of an element is to observe its behavior in a magnetic field. If an element experiences attraction to a magnetic field, it is paramagnetic, and if it experiences repulsion, it is diamagnetic.
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Select the correct answer.
Which outcome does the big crunch scenario predict?
A. the matter in the universe will slow the expansion to the pointwhere it would finally come to a halt and then start to retract
B. the universe will keep expanding and growing ever larger and galaxies will grow farther apart
C. the universe will finally extinguish itself with a violent expansion similar to the one with which it began
D. the gravity in the universe will grow very weak, resulting in the planets drifting into stars
Answers
Answer:
A. the matter in the universe will slow the expansion to the point where it would finally come to a halt and then start to retract
Explanation:
Answer:
the matter in the universe will slow the expansion to the point where it would finally come to a halt and then start to retract
Explanation:
Plato/Edmentum
What are the layers of sedimentary rock called?
Answers
A single layer of sedimentary rock is known as a bed or stratum (plural: strata). Each bed contains rock of a single composition and texture and can clearly be distinguished from the beds or strata above and below. This layering of strata is unique to sedimentary rocks and occurs because of the way that sediments are deposited.
how did the modern synthesis modify the theory of natural selection
Answers
The Modern Synthesis modified the theory of natural selection by proposing a new concept of evolution that would emphasize the genetic basis of evolution as "changes in allele frequencies within populations."
What is the modern synthesis theory?In the 1930s and 1940s, a number of now-famous evolutionary biologists created the Modern Synthesis.
The Modern Synthesis proposed a new concept of evolution that would emphasize the genetic basis of evolution as "changes in allele frequencies within populations."
Alleles are different variants of the same gene that differ in the DNA sequence used to build proteins with different amino acid compositions.) The evolution of allele frequencies has been influenced by four forces;
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Question 23 of 23
Suppose a current flows through a copper wire. Which two things occur?
O A. The field is parallel to the direction of flow of the current.
B. An electric field forms around the wire.
OC. A magnetic field forms around the wire.
U
D. The field is perpendicular to the direction of flow of the current.
SUBM
Answers
Answer:
The field is parallel to the direction of flow of the current.
Halo stars are found in the vicinity of the sun. what observational evidence distinguishes them from disk stars?
Answers
The observational evidence that distinguishes halo stars from disk stars is their difference in motion, metallicity, and age.
Halo stars, found in the outer regions of a galaxy, move in highly elliptical orbits around the galactic center, while disk stars, located in the flat, disk-like structure of a galaxy, have more circular orbits. This difference in motion can be detected through the Doppler effect and proper motion measurements. Furthermore, halo stars have low metallicity, meaning they contain a smaller amount of elements heavier than helium compared to disk stars, which have higher metallicity. This difference in metallicity can be observed using spectroscopy.
Lastly, halo stars are typically older than disk stars, as they formed during the early stages of galaxy formation. This age difference can be determined through methods such as analyzing the stars' color-magnitude diagrams and the Hertzsprung-Russell diagram. In summary, the motion, metallicity, and age of halo stars serve as key observational evidence distinguishing them from disk stars.
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A 1.7 m long barbell has a 20 kg weight on its right end and a 35 kg weight on the left end. If you ignore the weight of the bar itself, how far from the left end of the barbell is the center of gravity
Answers
The center of gravity is approximately 1.082 meters from the left end of the barbell.
To determine the position of the center of gravity of the barbell, we need to consider the weights on each end and their respective distances from the left end.
The weight on the right end is 20 kg, and the weight on the left end is 35 kg. Let's assume the center of gravity is located at a distance 'x' from the left end.
We can use the principle of moments to find the position of the center of gravity:
(35 kg) * (1.7 m - x) = (20 kg) * x
Simplifying the equation, we get:
59.5 - 35x = 20x
55x = 59.5
x = 59.5 / 55 ≈ 1.082 m
Therefore, the center of gravity is approximately 1.082 meters from the left end of the barbell.
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Calculate the change in time for each quarter of the track. Record the change in time in Table C of your Student Guide.
The change in time for the first quarter is _____ seconds.
The change in time for the second quarter is _____ seconds.
The change in time for the third quarter is _____ seconds.
The change in time for the fourth quarter is _____ seconds.
Answers
Answer:
Calculate the change in time for each quarter of the track. Record the change in time in Table C of your Student Guide.
The change in time for the first quarter is
✔ 2.07
seconds.
The change in time for the second quarter is
✔ 1.09
seconds.
The change in time for the third quarter is
✔ 0.95
seconds.
The change in time for the fourth quarter is
✔ 0.81
seconds.
Explanation:
Got it right in edge
Answer:
b a b d
Explanation:
HIII DROPPING COINS YALL
Answers
Answer:
tysm
Explanation:
Answer:
OMG THANK U SO MUCH I NEEDED THEMMMMM
Hee Sun drew an electron dot diagram of a silicon atom as shown.
S i with 1 dot each above, right, below, left.
In addition to changing the symbol to C, how would this diagram compare with an electron dot diagram of a carbon atom (C)?
The dot to the left of the symbol would be removed in the diagram for carbon.
The same number of dots would appear in the diagram for carbon.
There would be two dots above and to the right of the symbol in the diagram for carbon.
The single dots would be replaced with two dots on each side of the symbol in the diagram for carbon.
Answers
Answer:
B
Explanation:
I took the test uwu
Answer:
B. The same number of dots would appear in the diagram for carbon.
Explanation:
took the test and got 100%
A long, horizontal wire Ab rests on the surface of a table and carries a current I. A horizontal wire CD is vertically above wire AB , and is free to slide up and down on the two vertical metal guides C and D ( as shown in Fig) .Wire CD is connected through the sliding contacts to another wire that also carries a current I , opposite in direction to the current in wire AB . The mass per unit length of the wire CD is λ. To what equilibrium height h will the wire CD rise. assuming that magnetic force on it is wholly due to current in wire AB ?
Answers
The equilibrium height to which the wire CD will rise is given by the expression h = μ₀I² / 2π λg
What is magnetic field ?A region in which the force of magnetism acts is known as the magnetic field, and it surrounds magnetic materials or a moving electric charge. Moving magnetic dipoles and electric charges produce a magnetic field, which acts as a force field on other nearby magnetic dipoles and moving charges.
Magnetic field at a distance h produced by a current carrying wire
B = μ₀I/ 2πh
Magnetic force due to the present current carrying wire can be calculated by the formula
F = B I L
And we also know that F = mg
On equating these mg = B I L
( μ₀I/ 2πh ) I = ( m/ I ) g = λg
thus we get the value of h as
h = μ₀I² / 2π λg
Thus, the equilibrium height to which the wire CD will rise is given by the expression h = μ₀I² / 2π λg .
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The amount of lateral strain in a tension member can be calculated using OA the coeficient of expansion B the moment of inertia OCthe yield stress OD Poisson's rati
Answers
The amount of lateral strain in a tension member can be calculated using Poisson's ratio.
To calculate the lateral strain, we can use the equation: ε_lateral = -ν * ε_longitudinal
Where:
ε_lateral = Lateral strain
ν = Poisson's ratio
ε_longitudinal = Longitudinal strain
Poisson's ratio (ν) is a material property that describes the ratio of lateral strain to longitudinal strain when a material is subjected to an axial load. It is defined as the negative ratio of the transverse strain to the longitudinal strain.
Calculating the lateral strain involves determining the longitudinal strain, which can be calculated using the equation:ε_longitudinal = ΔL / L
Where:
ε_longitudinal = Longitudinal strain
ΔL = Change in length of the tension member
L = Original length of the tension member
Once the longitudinal strain is calculated, we can use Poisson's ratio to determine the lateral strain by multiplying the longitudinal strain by the negative value of Poisson's ratio.
It is important to note that the lateral strain is typically very small compared to the longitudinal strain in a tension member, especially for materials with a low Poisson's ratio.
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Moji listed the solids in order of hardness as graphite < chalk < quartz. His
peer group suggested some experimental errors that may have caused this to
happen. Which experimental error most likely led Moji to this conclusion?
A. Moji might have used color as an indication of hardness.
B. Moji might have thought that crumbliness was a sign of softness.
C. Moji might have thought that crumbliness was a sign of hardness.
D. Moji could have chosen hardness tests that were not reliable.
Answers
Answer: D.
Explanation:
Moji listed the solids in order of hardness as graphite < chalk < quartz. because his peer group suggested some experimental errors that may have caused this to happen. The experimental error most likely led Moji to the conclusion that Moji could have chosen hardness tests that were not reliable. Therefore the correct option is D.
What is the matter?Anything which has mass and occupies space is known as matter, mainly there are four states of matter solid liquid gases, and plasma.
These different states of matter have different characteristics according to which they vary their volume and shape.
There are various tests to judge the mechanical hardness of any solid material such as the Rockwell hardness test, Brinell's hardness test,Vicker's diamond hardness test, and Knoop's hardness test which is also known as microhardness test
The experimental error most likely led Moji to the conclusion that Moji could have chosen hardness tests that were not reliable. Therefore the correct option is D.
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A physics student stands on a cliff overlooking a lake and decides to throw a softball to her friends in the water below. She throws the softball with a velocity of 23.5 m/s at an angle of 39.5∘ above the horizontal. When the softball leaves her hand, it is 11.5 m above the water. How far does the softball travel horizontally before it hits the water? Neglect any effects of air resistance when calculating the answer.
Answers
Answer:
66.86m
Explanation:
Velocity of ball thrown, u = 23.5 m/s
Initial height of the ball above the water, H = 11.5 m
Angle of projection, θ = 39.5°
Vertical components of veloclty = usinθ
Horizontal components of veloclty = ucosθ
The soft ball hits the water after time 't'
Considering the second equation of motion
S = ut + 1/2at^2........ 1
But since the ball went through motion under gravity ( free fall ) rather than linear motion, then equation 1 can be rewritten as:
H = ut +/- 1/2gt^2
H = - 11.5m
U = usinθ
θ = 39.5°
a = -g = -9.8m/s^2
- 11.5m = 23.5(sin39.5°)t + 1/2(-9.8)t^2
-11.5m = 23.5(0.6360)t - 4.9t^2
-11.5m = 14.946t - 4.9t^2
4.9t^2 -14.946t-11.5m = 0
Since the ball drifted horizontally
D = (Ucosθ)t
Where θ = 39.5°
U = 23.5m/s t=
Alternatively,
horizontal component of the velocity is 23.5 cos 39.5º = 18.1331 m/s
now how long does it take the ball to raise to a peak and fall to the water.
vertical component of velocity = 23.5 sin 39.5º = 14.947m/s
time to reach peak t = v/g = 11.947/9.8 = 1.5252 sec
peak reached above cliff top is
h = ½gt² = ½(9.8)(1.5252)²
= ½×22.797
= 11.3985m
now the ball has to fall 11.3985+ 11.5 = 22.8985m
time to fall from that height is
t = √(2h/g) = √(2• 22.8986/9.8) = 2.1617 sec
add up the two times to get time it is in the air, 2.1617 + 1.5252 = 3.6869
now haw far does the ball travel horizontally in that time
d = vt = 18.1331 ×3.6869= 66.856m
= 66.86m
help please, last ride guys
Answers
Hence energy absorbed = 4186*2.4/2.5 = 25116 J
Energy absorbed = Energy lost by brass.
Change in temperature of brass = 90.1 C. Mass = 0.52 kg. Energy lost = 25116 J
Hence specific heat = 25116/0.52/90.1 = 536 J/kgC
2. Change in temperature = 14 C
Mass of water = 195 g
Heat required to raise 1g water by 1C = 4.18 J
Hence heat required = 4.18*195*14 = 11411.4 J
For the fifth question we need the diagram or experiment above the question for context
Answer:
Solution ( for fourth attachment ) : 38°C
Tip : Remember the units °C when submitting answer
Explanation:
As you mentioned, we only need the solution for the fourth attachment.
The idea here is that the heat lost by the metal will be equal to the heat gained by the water. We know that the specific heat gained or lost will always be represented by the following formula,
q = m \(*\) c
Therefore if we substitute the know values and equate the two equations knowing that " q " is common among them --- ( 1 )
0.33 \(*\) 448
Remember that the change in temperature of iron (ΔT) would be represented by final temperature - initial temperature, or final temperature - 693. Similarly the change in temperature of water will be final temperature - 39. Now we can pose the final temperature as a, and solve for a through substitution --- ( 2 )
0.33 \(*\) 448
From here on take a look at the attachment. It represents how to receive get a through simple algebra. Here a, the final temperature, is about 38°C. In exact terms it will be \(38.03617\dots\)°C.
The
super hero Flash uses 500 J of energy to complete one lap of the track in 5 seconds. What is the runner's
power?
Answers
Answer:
100
Explanation:
cause power equal to work over time
physics:1) Calculate the pressure in pa if the reading from a barometer is 820 mmHg.
Answers
The pressure in Pascal is approximately 109,287.24 Pa.
To calculate the pressure in Pascal (Pa) using the reading from a barometer, you can use the conversion factor between millimeters of mercury (mmHg) and Pascal. The conversion factor is 1 mmHg = 133.322 Pa.
Given that the reading from the barometer is 820 mmHg, we can calculate the pressure in Pascal using the following equation:
Pressure (Pa) = Reading (mmHg) * Conversion Factor (Pa/mmHg)
Pressure (Pa) = 820 mmHg * 133.322 Pa/mmHg
Pressure (Pa) = 109,287.24 Pa
Therefore, the pressure in Pascal is approximately 109,287.24 Pa.
It's important to note that the Pascal (Pa) is the SI unit of pressure and is defined as the force per unit area. The millimeter of mercury (mmHg), on the other hand, is a unit of pressure commonly used in barometric measurements. The conversion factor between the two units allows us to convert readings from a barometer into the SI unit of pressure, which is the Pascal.
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The average distance between Earth and its moon is 384,000,000 meters. Express this distance in kilometers.
Answers
Answer: 384 400 km.
Explanation: The awnser is 384 400 kilometers
The Enterprise wants to orbit a4.15 x 10^24kg planet with a period of14100 s. What should the radius oftheir orbit be?
Answers
Given:
Mass of planet, m = 4.15 x 10²⁴ kg.
Period, T = 14100 s
Let's find the radius.
To find the radius, apply the formula from Kepler's Third aw:
\(\begin{gathered} \frac{T^2}{R^3}=\frac{4\pi^2}{GM} \\ \\ \end{gathered}\)Where R is the radius.
Rewrite the formula for r:
\(R=\sqrt[3]{\frac{GM*T^2}{4\pi^2}}\)Where:
G is gravitational constant = 6.67 x 10⁻¹¹ m3 kg-1 s-2
M is the mass = 4.15 x 10²⁴ kg
T is the period = 14100 s
π = 3.54
Plug in values and solve for R;
\(\begin{gathered} R=\sqrt[3]{\frac{6.67\times10^{-11}*4.15\times10^{24}*14100^2}{4\pi^2}} \\ \\ R=\sqrt[3]{\frac{5.503\times10^{22}}{39.4784}} \\ \\ \end{gathered}\)Solving further:
\(\begin{gathered} R=\sqrt[3]{1.394\times10^{21}} \\ \\ R=11170796.49\approx1.12\times10^7\text{ m} \end{gathered}\)Therefore, the orbital radius will be 1.12 x 10⁷ meters.
ANSWER:
1.12 x 10⁷ m
a propeller plane and a jet travel 3000 miles. the velocity of the plane is 1/3 the velocity of the jet. it takes the prop plane 10 hours longer to complete the trip. what is the velocity of the jet?
Answers
The velocity of the jet is calculated to be 900 miles/hr when the relation between velocities of both propeller and the jet is given.
The distance travelled by a propeller plane and a jet = 3000 miles
Velocity of the plane Vp = 1/3 Velocity of the jet Vj
Vp = 1/3 Vj
Vj = 3 Vp ----(1)
Time taken by the propeller plane to complete the trip = 10 hours
Velocity of the propeller plane = Distance of the propeller plane/Time
⇒ 3000/10 = 300 miles/hr
The velocity of the jet = 3 times the velocity of the propeller plane
⇒ 3 × 300 miles/hr = 900 miles/hr
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What is the main unit of measurement used in football?
Answers
Answer: It would be yards
Explanation:
Answer:
I suppose you are talking about American football, so the answer would be yards.
Explanation:
The field is measured using yards.
which class of lever do spoon and scissors belong to?
Answers
Answer:
spoon and scissors belong to first class lever.
hope it is helpful to you
Someone Please Help
Just need answerd
Answers
1. The spring is storing
1/2 (240 N/m) (0.40 m)² = 19.2 J ≈ 19 J
of potential energy.
2. When the spring is compressed by 0.30 m, it is storing
1/2 (240 N/m) (0.30 m)² = 10.8 J
so there was a loss of 19.2 J - 10.8 J = 8.4 J.
3. The spring is storing
1/2 (150 N/m) (0.80 m)² = 48 J
of potential energy.
4. Stretching the spring by 0.20 m more has it storing
1/2 (150 N/m) (1.0 m)² = 75 J
so that the extra weight adds 75 J - 48 J = 27 J of energy.
công thức tính định luật ôm
Answers
Answer:
I=U/R
Explanation:
Pilings are driven into the ground at a building site by dropping a 1850 kg object onto them. What change in gravitational potential energy does the object undergo if it is released from rest 19.0 m above the ground and ends up 1.60 m above the ground
Answers
The object undergoes a change in gravitational potential energy of 314,196 Joules.
The change in gravitational potential energy of the object can be calculated using the formula:
ΔPE = m x g x Δh,
where ΔPE is the change in gravitational potential energy, m is the mass of the object, g is the acceleration due to gravity, and Δh is the change in height.
Given:
m = 1850 kg (mass of the object)
g = 9.8 m/s² (acceleration due to gravity)
Δh = 19.0 m - 1.60 m = 17.4 m (change in height)
Plugging in these values and calculate the change in gravitational potential energy:
ΔPE = 1850 kg x 9.8 m/s² x 17.4 m
ΔPE = 314,196 J.
Therefore, the object undergoes a change in gravitational potential energy of 314,196 Joules.
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10 poin
What is the momentum of a 25kg cart traveling left with a velocity of 10
m/s?
Answers
Mass times velocity gives you momentum 25*10=250
A first piece of rock which weighs 5N. Force F is applied to this first piece of rock and it produces an acceleration of a. Now if there is a second piece of rock. What force needs to be applied to the second piece of rock to produce an acceleration of 8a. Mass of both pieces of rock is same.
Answers
Answer:
Explanation:
he force will depend on the masses of the rocks.
The formula you weren’t paying attention to in your Physics lesson was one of the more basic ones:
F = ma
F is the force. m is the mass of the object, and a is the acceleration. That’s all you should need.
Unfortunately, your question gave the weight of the rocks, not their masses. So, it can’t be answered without more information - eg is the rock on Earth, or on the moon, Mars or a planet orbiting Alpha Centauri?
If the rock is located on Earth, then you can use the same formula as above, because we know that a = g = 9.8m/s/s. and F is the weight. So, we know F, a and can work out m using a bit of basic algebra.
The other problem is that we don’t know the mass of the second piece of rock, because we haven’t been told either the weight or mass of that piece of rock.
If your homework question didn’t specify that, you can either refuse to answer it saying that not enough information was given, or STATE in your answer that you are assuming that the second piece of rock is the same mass as the first one.
If you decide to do that, then a minute’s work should give you the answer you’re looking for.
The series is shown in over 100 countries. About 300 million people watch it every day. This makes The Bold and the Beautiful the most watched television series in the world. The first episode was shown on March 23, 1987 on the CBS network. The series was created by the soap opera writer William J. Bell and his wife, Lee Phillip Bell. It is the only American soap opera to have its daily episodes translated into Spanish for the Hispanic viewers in the United States. The series is set in Los Angeles, California. It tells the story of the Forrester family, who owns a fashion empire called Forrester Creations. The major members of the family are Eric Forrester (played by John McCook), the president of Forrester Creations, his wife Stephanie (Susan Flannery), their eldest son Ridge (Ronn Moss) and Brooke Logan (Katherine Kelly Lang), who was married to both the father and the son. She owns most of Forrester Creations. This is because she created BeLieF, a formula which earned much money for the company. There used to be a second fashion company called Spectra Fashions. It was Forrester’s main competitor. The conflicts between the Forrester and the Spectra families was one of the major themes of the story.
Answers
More than a 100 nations broadcasted series. The Bold and the Beautiful teasers for the upcoming CBS soap opera hint at more conflict.
What does the earth's horizon look like?The line dividing the Earth's surface from the sky is known as the horizon. Earth-sky horizons and celestial horizons are the two basic categories of horizons. There are various sub-types of horizons for both Earth-sky and celestial horizons. Earth-sky horizons include the local horizon, regional horizon, and sea level horizon.
What is the horizon that is lit?The particle horizon, also known as the cosmological horizon, comoving horizon, or cosmic light horizon, is the furthest a particle's light may have travelled before reaching an observer during the early universe's history.
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Excellent human jumpers can leap straight up to a height of
110 cm off the ground. To reach this height, with what speed
would a person need to leave the ground?
Answers
For a human jumper to reach a height of 110 cm, the person will need to leave the ground at a speed of 4.65 m/s.
We can calculate the initial speed to reach 110 cm of height with the following equation:
\( v_{f}^{2} = v_{i}^{2} - 2gh \)
Where:
\( v_{f}\): is the final speed = 0 (at the maximum height of 110 cm)
\( v_{i}\): is the initial speed =?
g: is the acceleration due to gravity = 9.81 m/s²
h: is the height = 110 cm = 1.10 m
Hence, the initial velocity is:
\( v_{i} = \sqrt{v_{f}^{2} + 2gh} = \sqrt{2*9.81 m/s^{2}*1.10 m} = 4.65 m/s \)
Therefore, the initial speed that the person must have to reach 110 cm is 4.65 m/s.
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1. Una bola de 0.510 kg de masa se mueve al este (dirección +x) con una rapidez de 4.80 m/s y choca frontalmente con una bola de 0.220 kg en reposo. Si la colisión es perfectamente elástica, ¿cuál será la rapidez y dirección de cada bola después de la colisión?
Answers
Responder:
3,37 m / s, + ve x - dirección
Explicación:
Utilizando la ley de conservación de la cantidad de movimiento expresada por la fórmula;
m1u1 + m2u2 = (m1 + m2) v
m1 y m2 son las masas de los objetos
u1 y u2 son sus velocidades iniciales
v es su velocidad común
Dado
m1 = 0,519 kg
u1 = 4,80 m / s
m2 = 0,220 kg
u2 = 0 m / s (cuerpo en reposo)
Necesario
Velocidad común v
Sustituir en la fórmula los valores dados;
0,519 (4,8) + 0,22 (0) = (0,519 + 0,220) v
2,4912 + 0 = 0,739 v
2,4912 = 0,739v
Dividir ambos lados por 0,739
2,4912 / 0,739 = 0,739 / 0,739
v = 3,37 m / s
Por lo tanto, la rapidez de ambas bolas después de la colisión es de 3.37 m.s hacia la dirección x positiva, ya que m1> m2 y la velocidad común es positiva.