Answers
Answer:
Explanation:
All of the energy in the pendulum is kinetic energy and there is no gravitational potential energy. However, the total energy is constant as a function of time.
Related Questions
Do you thin it is possible to have the benefits of the Agricultural and Industrial revolutions without the environmental costs?
Answers
Answer:No
Explanation:There is no current technology which supports zero waste exhaust
Sometimes in the winter, ice crystals grow directly from the moisture in the air. As the water changes from a gas to a solid, the molecules
Group of answer choices
slow down as they gain energy.
slow down as they lose energy.
speed up as they lose energy.
speed up as they gain energy.
Answers
Answer: B. slow down as they lose energy
Basim’s robotics team builds a robot that travels at 9 m/s and can fire a tennis ball at a target.
Which would result in a judge who is sitting beside the testing ground observing the tennis ball having a speed of 7 m/s?
The robot fires the ball forward with a speed of 7 m/s.
The robot fires the ball backward with a speed of 7 m/s.
The robot fires the ball backward with a speed of 2 m/s.
The robot fires the ball forward with a speed of 2 m/s.
Answers
Answer:
C. The robot fires the ball backward with a speed of 2 m/s.
Explanation:
The robot fires the ball backward with a speed of 2 m/s.
To find the correct statement among all the options, we need to know about the relative velocity.
What is relative velocity?Velocity is a relative physical quantity that depends on the chosen frame of reference.
What is the mathematical formulation of relative velocity?Relative velocity=Vi-V'Where Vi is the velocity in inertial frame and V' is velocity with respect to the moving frame. Here, relative velocity=9 m/s and Vi = 7m/sSo, V'= Vi - relative velocity= 7m/s - 9 m/s = -2m/sThus, we can conclude that the robot fires the ball backward with a speed of 2 m/s.
Learn more about the relative velocity here:
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On a given microscope, the numerical apertures of the condenser and low-power objective lenses are 1.25 and 0.25. You are supplied with a filter that selects a wavelength of 520nm.
Required:
a. What is the limit of resolution on this microscope?
b. Will you be able to distinguish 2 points that are 300nm apart as being separate, or will they blur into one?
Answers
Answer:
- colony: mass of single-type cells formed from single cell/small chain; pair or small cluster of cells; visible to naked eye
- colony forming unit: not visible to eye, original single cell or small chain/pair or small cluster of cells FROM WHICH colony forms
- Streaking plate: producing isolated colonies upon incubation using streak plate methods in agar
- Quadrant streak: used when sample is of high density
- Zigzag pattern: used when sample is of low density
a. The limit of resolution on this microscope is approximately 1254nm.
b. Two points that are 300nm apart will blur into one and cannot be distinguished as separate using this microscope.
The formula for the limit of resolution (d) is given by:
d = (0.61 × λ) / NA
where λ is the wavelength of light and NA is the numerical aperture.
a. To find the limit of resolution:
Given:
Wavelength of light (λ) = 520nm
Numerical aperture of the low-power objective lens (NA) = 0.25
Substituting these values into the formula, we have:
d = (0.61 × 520) / 0.25
d = 1254nm
Therefore, the limit of resolution on this microscope is approximately 1254nm.
b. To determine if two points 300nm apart can be distinguished:
Given:
Separation between the points (d) = 300nm
Since the separation between the points (300nm) is smaller than the limit of resolution (1254nm), the two points will blur into one and will not be distinguishable as separate entities.
In conclusion:
a. The limit of resolution on this microscope is approximately 1254nm.
b. Two points that are 300nm apart will blur into one and cannot be distinguished as separate using this microscope.
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The acceleration due to gravity on Earth is 9.81 m/s² [down]. A hockey puck was launched from the ice with a velocity of 50.0 m/s [up]. Assuming no friction, determine the velocity of the puck at its maximum height.
Answers
Answer:
0 m/s.
Explanation:
When an object is shot up into the air the only force acting on it is gravity while neglecting wind. As the gravity is acting on the object it keeps decelerating till its velocity becomes 0 after which it can go no further. The maximum height of the object is at this point.
So, at its maximum height the velocity of the puck will be zero.
Which structures are in the cytoplasm? Check all that apply
Cell membrane
Chloroplast
Endoplasmic reticulum
Lysosomes
Cell wall
Nucleus
Vacuoles
Answers
Answer:
nucleus and endoplasmic reticulum. I'm pretty sure the mitochondria is in the cytoplasm too
Answer:
2.chloroplasts
3.endoplasmic reticulum
4.lysosomes
6.nucleus
7.vacuoles
Explanation:
These were the correct answers in my Cell Structure Assignment.
You push a 10N object 10 meters. How much work was done on the object.
Answers
10*10=100
100J of work done
Enrique is given information about a satellite orbiting
Earth.
In order to calculate the tangential speed of the
satellite, what should Enrique do first?
r=3.8 x 108 m
T= 18 days
- convert the radius to kilometers
- convert the orbital period to seconds
-find the square root of the radius
- find the square root of the orbital period
Answers
Answer:
B, convert the orbital period to seconds
Explanation:
edge 2o2o
In order to calculate the tangential speed of the satellite, Enrique should do first converted the orbital period to seconds. The correct option is b.
What is the tangential speed?Any item moving along a circular path has a linear component to its speed called tangential velocity. An object's velocity is always pointed tangentially when it travels in a circle at a distance r from the center. Tangential velocity is the name given to this.
Satellites can go over the Earth's North and South Poles, orbit the equator, or travel anywhere in between. They travel thousands of miles into space or only a few hundred miles above the surface of the Earth to perform their orbits. Enrique has given:
r=3.8 x 108 m
T= 18 days
Therefore, the correct option is b. convert the orbital period to seconds.
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A net force of 10 N accelerates a mass of 5 kg with an acceleration of 2
m/s2. If the mass of the object is doubled, then the acceleration will now
be: (Remember Newton's 2nd Law: EF=ma)
4 m/s2
2 m/s2
O 1 m/s2
O 0.25 m/s2
Answers
Answer:
1 m/s²
Explanation:
The following data data were obtained from the question:
Net force (F) = 10 N
Initial mass (m1) = 5 Kg
Initial acceleration (a1) = 2 m/s²
Final mass (m2) = double the initial mass = 2 × 5 = 10 kg
Final acceleration (a2) =?
The final acceleration of the object can be obtained as follow:
Recall:
Force (F) = mass (m) × acceleration (a)
F = m × a
Keeping the force constant, we have
m1a1 = m2a2
With the above formula, we can obtain the final acceleration of the car as follow:
Initial mass (m1) = 5 Kg
Initial acceleration (a1) = 2 m/s²
Final mass (m2) = 10 kg
Final acceleration (a2) =?
m1a1 = m2a2
5 × 2 = 10 × a2
10 = 10 × a2
Divide both side by 10
a2 = 10 /10
a2 = 1 m/s²
Therefore, the final acceleration of the car will be 1 m/s²
The density of gold is 19.3 gm/cc. Express it's value in SI unit.
Answers
Answer:
SI unit of density is kg/m^3
Using unit conversion:
density = 19.3 * 1000 kg/m^3
Explanation:
I assume that you are asking for the density conversion to SI, sorry if this isn't what you were asking.
What is pulling the box down
Answers
Answer:
Gravity is pulling the box down. :)
Explanation:
Plz help I don’t know what to do
Answers
b. rarefaction
c. longitudinal
which of the following statements about ocean waves a true?
A. they travel on the surface of the water
B. they travel deep underwater
C. they are secondary waves
D. they are primary waves
Answers
The assertion that ocean waves move on the water's surface is accurate. Therefore, choice A is right.
What is the ocean waves?A wind wave, water wave, or tornado water wave is a surface wave that develops on a body of water's free surface as a result of the air flowing over the ocean's surface. The fetch is the distance at which two objects come into touch when facing the wind.
The wind is the most frequent source of waves. The friction between the wind and the surface of the water produces wind-driven waves, also known as surface waves. A wave crest is produced when wind continuously disturbs the water's surface in an ocean or lake.
The statements about ocean waves a true will be they travel on the surface of the water.
Thus, option A is correct.
More about the ocean waves link is given below.
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Which best describes the relationship between the terms “frequency,” “wavelength,” and “hertz”?
Wavelength is the number of frequencies, which is measured in hertz.
Frequency is the number of wavelengths, which is measured in hertz.
Wavelength is measured from frequency to hertz.
Frequency is measured from wavelength to hertz.
Answers
Answer:
Frequency is the number of wavelengths, which is measured in hertz.
Explanation:
I have my ways ;)
The relationship between the terms “frequency,” “wavelength,” and “hertz" is that frequency is the number of wavelengths, which is measured in hertz.
Relation between frequency and wavelength:The wavelength is described as the distance between two points on a wave having the same phase. It is also defined as the distance between two successive maxima or minima of the waveform.
The frequency of a wave is the measure of the number of wavelengths completed in one second and it is measured in Hertz (Hz).
The frequency is also the reciprocal of the time period of the wave, which is the time taken to complete one wavelength.
Therefore, frequency is the number of wavelengths, which is measured in hertz.
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In a football game the running back is running up the field. He starts from rest and runs 4 seconds with an acceleration of 1.3m/s. What is the magnitude of his displacement
Answers
We are given:
initial velocity (u) = 0 m/s
time (t) = 4 seconds
acceleration (a) = 1.3 m/s²
displacement (s) = x m
Solving for the displacement:
from the second equation of motion
s = ut + 1/2 at²
replacing the variables with the given values
x = (0)(4) + 1/2 (1.3)(4)(4)
x = 1/2 * 20.8
x = 10.4 m
Which (on average) takes the longest to orbit the sun (longest period)?
a) asteroids
b) comets
c) Earth
d) Mars
Answers
How that answered your question :)
Please help will mark Brainliest. An object is dropped from the roof of a building. After 3.5 seconds, the object strikes the ground. A.) After 2 seconds, what is the speed of the object? B.) At what speed does the object strike the ground? C.) Find the height from which the object was dropped. Show Work
Answers
Answer:
19.62 m/s
34.335 m/s
1.75 m
Explanation:
v = Final velocity
u = Initial velocity = 0
a = g = Acceleration due to gravity = [tex]9.81\ \text{m/s}^2[/tex]
t = Time taken = 2 s
From the equations of linear motion we have
[tex]v=u+at\\\Rightarrow v=0+9.81\times 2\\\Rightarrow v=19.62\ \text{m/s}[/tex]
The speed of the object after 2 seconds is 19.62 m/s
t = 3.5 s
[tex]v=u+at\\\Rightarrow v=0+9.81\times 3.5\\\Rightarrow v=34.335\ \text{m/s}[/tex]
The velocity of the object when it strikes the ground is 34.335 m/s.
[tex]v^2-u^2=2as\\\Rightarrow s=\dfrac{v^2-u^2}{2a}\\\Rightarrow s=\dfrac{34.335-0}{2\times 9.81}\\\Rightarrow s=1.75\ \text{m}[/tex]
THe height from which the object was dropped is 1.75 m.
At which point(s) does the pendulum have the greatest potential energy?
A only
B only
C only
both A and C
Answers
Potential energy is the energy possessed by a body because of its position relative to other bodies.
At both point A and C pendulum have the greatest potential energy.
Potential energy would be highest when the pendulum is at its highest point on either side of its motion where it is stationary for an instant.
At end point A and C , where all kinetic energy has been converted to potential energy because it is stationary for an instant at that points.
So, at points A and C , kinetic energy is zero because velocity is zero and all energy stored in form of potential energy.
Learn more:
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Answer:
for some reason, i got B. tried a and c
Explanation:
it might depend on which problem you get i guess.
Two children ride side-by-side on a carousel. Their paths are shown in the image below.
Which child has a greater tangential velocity?
Question 6 options:
The child represented by a triangle on the inside path.
The child represented by a star on the outside path.
The child on the faster horse.
Both travel at the same tangential velocity.
Answers
Answer:
The child represented by a star on the outside path.
Explanation:
Solenoid 2 has twice the radius and six times the number of turns per unit length as solenoid 1. The ratio of the magnetic field in the interior of 2 to that in the interior of 1 is:___________A. 2B. 4C. 6D. 1E. 1/3
Answers
Given :
Solenoid 2 has twice the radius and six times the number of turns per unit length as solenoid 1.
To Find :
The ratio of the magnetic field in the interior of 2 to that in the interior of 1.
Solution :
We know, magnetic field in the interior of a solenoid is given by :
[tex]B = \dfrac{\mu ni}{L}[/tex]
Let, length of solenoid 2 is L.
Therefore, length of solenoid 1 is 6L.
[tex]B_a=\dfrac{\mu (6n)i}{L}\\\\B_b = \dfrac{\mu n i}{L}[/tex]
Dividing [tex]B_a[/tex] by [tex]B_b[/tex] :
[tex]\dfrac{B_a}{B_b}=\dfrac{\dfrac{\mu (6n)i}{L}}{\dfrac{\mu n i}{L}}\\\\\dfrac{B_a}{B_b}=6[/tex]
Therefore, the correct answer is C. 6.
The theory that attitudes will be formed and changed according to one’s actual behaviors is the __________ theory. A. learning B. dissonance C. self-perception D. balance
Answers
Answer:
Letter C Cuh
Explanation:
Answer:
C. self-perception
Explanation:
Cuh above me is right
Which shows the correct order of steps when using wind to generate electricity?
wind turbine blades turn generator → generator changes kinetic energy to electricity → kinetic energy from wind turns blades on wind turbine
kinetic energy from wind turns blades on wind turbine → wind turbine blades turn generator → generator changes kinetic energy to electricity
kinetic energy from wind turns blades on wind turbine → generator changes kinetic energy to electricity → wind turbine blades turn generator
wind turbine blades turn generator → kinetic energy from wind turns blades on wind turbine → generator changes kinetic energy to electricity
Answers
Answer:
kinetic energy from wind turns blades on wind turbine → wind turbine blades turn generator → generator changes kinetic energy to electricity
Explanation:
The order of steps in the energy conversion during the production of electricity from wind turbine are as follows:
1. First of all, the wind transmits its kinetic energy to the turbine blades by striking the blade.
2. The turbine blades are connected to a generator. The kinetic energy of the turbine blades is utilized to turn the generator shaft.
3. The generator then converts the kinetic energy of the blades into electricity.
Hence, the correct option is:
kinetic energy from wind turns blades on wind turbine → wind turbine blades turn generator → generator changes kinetic energy to electricity
Answer:
B
explain: edge test
A small sculpture made of gold ( rho gold =19320 kg/m^ 3 ) is believed to have a secret central cavity. The weight of the sculpture in air is 11.29 N. When it is submerged in water, the weight is 9.190 N. What is the volume of the secret cavity?
Answers
Answer:
1.1 x 10⁻⁵m³
Explanation:
Given parameters:
Weight in air = 11.29N
Weight in water = 9.190N
Density of gold = 19320kg/m³
Unknown:
Volume of the secret cavity = ?
Solution:
To solve this problem, we need to find the mass of the secret cavity.
Weight of the cavity = Weight of sculpture in air - Weight of sculpture in water
Weight of cavity = 11.29N - 9.190N = 2.1N
Weight = mass x acceleration due to gravity
Mass =[tex]\frac{2.1}{9.8}[/tex] = 0.2kg
So;
Volume of substance can be determined from the density.
Density = [tex]\frac{mass}{volume}[/tex]
Volume = [tex]\frac{mass}{density}[/tex]
Now insert the parameters and solve;
Volume = [tex]\frac{0.2}{19320}[/tex] = 1.1 x 10⁻⁵m³
The amount of work required for a
dump truck to move a mound of dirt 0
meters using a foree of 70 Newtons is
what?
Answers
Answer:
if I'm not wrong, 0 Joules
Explanation:
If it is not being moved at all, then no work is being done
Can you harvest energy by impact force in a battery? Explain your answer.
Answers
Answer:
1. Resistance
2. Store chmical energy and transfer it to electrical energy when a circuit is connected
3.Electric current
4. Series and parallel
5. can't see diagram
6. series
7. Parallel
8. can't not see diagram
Explanation:
What is a magnetic material?
Answers
Answer:
Diamagnetism.
Paramagnetism.
Ferromagnetism.
Ferrimagnetism.
Antiferromagnetism.
Explanation:
Magnetic materials are materials studied and used mainly for their magnetic properties. The magnetic response of a materials is largely determined by the magnetic dipole moment associated with the intrinsic angular momentum, or spin, of its electrons.
Answer:
materials studied and used mainly for their magnetic properties
Explanation:
Iron is an extremely well-known ferromagnetic metal.
Nickel is another popular magnetic metal with ferromagnetic properties.
also, Magnetism is the force exerted by magnets when they attract or repel each other. :)
If circumference C = 2 pi r where r is the radius, how long would it take a car to travel
once around a circular track with a 80 meter radius if it is traveling 50 m/s ?
Answers
C = 2*3.14*80
C = 502.4 meters
2. Find the time
t = d/s
t = 502.4m/50m/s
t = 10.048 seconds
It would take about 10.048 seconds to travel around the track
1. An 95 N force has been applied to a block and move it 25 m along the direction of
the force. How much work has been done to the block?
Answers
Answer:
2375 JExplanation:
The work done by an object can be found by using the formula
workdone = force × distance
From the question we have
workdone = 95 × 25
We have the final answer as
2375 JHope this helps you
If you use a horizontal force of 30.0 N to slide a 12.0 kg wooden crate across the floor at a
constant velocity, what is the normal force?
Answers
Answer:
i found: μk= 0.25
Explanation:
Newton's law is split into two components along
x and y , that, using our data, give:
30 − μkRn = 0
Rn = mg = 12⋅9.81 = 117.7 ≈ 118N
So: μk = 30/118 = 0.25
Please Mark Brilliant
What is the potential energy of a puppy that weighs 18 N istting in a high chair 2 m high?
Answers
Answer:
Potential energy =mass* acceleration due to gravity * height
mass*acceleration due to gravity =weight
hence potential energy of the puppy= weight * height
=18*2
=36 joule