Answers
Answer:
j
Explanation:
Related Questions
When all else remains the same, what effect would decreasing the focal length have on a convex lens?
Answers
Answer:
It would cause the lens to produce only real images. It would cause the lens to produce only virtual images. It would make the lens stronger. It would make the lens weaker.
Explanation:
quizlet
Answer:
its c
Explanation:
What happens to the volume of sound as the amplitude gets larger?
Answers
Mass of trolley (m):
(1)
0,9
kg
Mass
m xa
Acceleration
(a)
(mos)
Applied
Force (N)
0
4,04
O112
Tabulate your measurements in the table below.
At from A to B (s)
Average
Kg
At (s)
1
2
3
Hanger only
4,07 4,00
HOS
Hanger +
1 mass piece
10
3,09
3,04 3,10
3,14
Hanger +
2 mass pieces
ao
2,00
Hanger +
3 mass pieces 30
1196
1,91
Hanger +
4 mass pieces
168 1,69 1,TO 1,69
(5)
0,21
2,1 x 103 0, 098
O #4
8,8X10
2,22 2,14
0, 196
01 SS
0102
o zau
0103
01392
0/ 70
(5)
(5)
QUESTIONS AND ANALYSIS
1.
In this experiment identify the...
1.1
independent variable
(1)
1.2 dependent variable
3 E
1.3
controlled variable
Ар со
2.
3
Describe how the effect of friction was minimised in the experiment.
(1)
Use the recorded data to plot a graph that will show the relationship
between the acceleration and the applied force on the trolley. Use a (8)
graph paper.
Ilse the cranh to determine the mass of the trolley.
(4)
Answers
Answer:
ij
Explanation:
Match the phrase with word please help!
Phrases:
1.) The amount of work done when jerry carries a box from his house to the moving truck . He exerts a force of 35 N while carrying the box 4 meters
2.) The power resulting from 420 Nm of work being completed in 3 seconds
3.) The amount of work done when Fido carries his toy from the backyard to his crate. He exerts a force of 1.2 N over a distance of 15 m
4.) The power resulting from 120 Nm of work being completed in 20 seconds
A.) 140 joules
B.) 140 Newton-meters
C.) 6 joules
D.) 6 Newton-meters
Answers
Answer:
1-B, 2-A, 3-D, 4-C
Explanation:
1. The force exerted is, F = 35 N
Distance the box is moved, d = 4 m
So the amount of work done is, W = F x d
= 35 x 4
= 140 Newton-meters
2. Work done, W = 420 Nm
Time, T = 3 seconds
Therefore, the power required is,
[tex]$P=\frac{W}{T}$[/tex]
[tex]$P=\frac{420}{3}$[/tex]
= 140 joules
3. The force exerted is, F = 1.2 N
Distance the box is moved, d = 5 m
So the amount of work done is, W = F x d
= 1.2 x 5
= 6 Newton-meters
4. Work done, W = 120 Nm
Time, T = 20 seconds
Therefore, the power required is,
[tex]$P=\frac{W}{T}$[/tex]
[tex]$P=\frac{120}{20}$[/tex]
= 6 joules
this is not a question its a thanks zerofrancisco
Answers
Answer:
⠀⠀⠀⠀⠀
Explanation:
Answer:
the guy above me has great humor
Explanation:
PLZZZZZZ HELP 50 POINTS Directions
Now that the lab is complete, it is time to write your lab report. The purpose of this guide is to help you write a clear and concise report that summarizes the lab you have just completed.
The lab report is composed of two sections:
Section I: Overview of Investigation
Provide background information.
Summarize the procedure.
Section II: Observations and Conclusions
Include any charts, tables, or drawings required by your teacher.
Include answers to follow-up questions.
Explain how the investigation could be improved.
To help you write your lab report, you will first answer the four questions listed below based on the lab that you have just completed. Then you will use the answers to these questions to write the lab report that you will turn in to your teacher.
You can upload your completed report with the upload tool in formats such as , Microsoft Word, or PDF. Alternatively, your teacher may ask you to turn in a paper copy of your report or use a web-based writing tool.
Questions
Section I: Overview of Lab
What is the purpose of the lab?
What procedure did you use to complete the lab?
Outline the steps of the procedure in full sentences.
Section II: Observations and Conclusions
What charts, tables, or drawings would clearly show what you have learned in this lab?
Each chart, table, or drawing should have the following items:
An appropriate title
Appropriate labels
If you could repeat the lab and make it better, what would you do differently and why?
There are always ways that labs can be improved. Now that you are a veteran of this lab and have experience with the procedure, offer some advice to the next scientist about what you suggest and why. Your answer should be at least two to three sentences in length.
Writing the Lab Report
Now you will use your answers from the four questions above to write your lab report. Follow the directions below.
Section I: Overview of Lab
Use your answers from questions 1 and 2 (above) as the basis for the first section of your lab report. This section provides your reader with background information about why you conducted this lab and how it was completed. It should be one to two paragraphs in length.
Section II: Observations and Conclusions
Use your answers from questions 3 and 4 (above) as the basis for the second section of your lab report. This section provides your reader with charts, tables, or drawings from the lab. You also need to incorporate your answers to the follow-up questions (from the Student Guide) in your conclusions.
Overall
When complete, the lab report should be read as a coherent whole. Make sure you connect different pieces with relevant transitions. Review for proper grammar, spelling, punctuation, formatting, and other conventions of organization and good writing.
Answers
Answer:
60-34+56×22
Explanation:
that's cuz imma teacher THOY!!!!!!
Answer:
60-34+56×22
Explanation:
When an ionic compound dissolves like salt, what breaks apart from each other in the water?
Answers
Answer:
When ionic compounds dissolve in water, they break apart into the ions that make them up through a process called dissociation. When placed in water, the ions are attracted to the water molecules, each of which carries a polar charge. ... The ionic solution turns into an electrolyte, meaning it can conduct electricity.
The bonds that is present between atoms of ionic compounds break apart when it is dissolved in water.
What happen when ionic compound dissolve in water?When ionic compounds dissolve in water, the ions in the solid separate in the solution because water molecules has polar nature which attracts that ions. The hydrogen of water molecule attracts chlorine of ionic compound whereas hydroxle ion attracts sodium of ionic compound.
So we can conclude that the bonds that is present between atoms of ionic compounds break apart when it is dissolved in water.
Learn more about ionic compound here: https://brainly.com/question/2687188
Does Direction matter when you are measuring momentum
Answers
Answer:
Yes
Momentum is a vector quantity
Explanation:
A vector quantity is a quantity that has both magnitude and direction
So definitely direction matters
Answer:
no on edge 2021
Explanation:
An electromagnetic wave transmits
A. Matter but not energy
B.energy but not matter
C. Both matter and energy
D. Neither energy nor matter
Answers
Answer:
B
Explanation:
I think so
Which describes the changes in visible light moving from red to violet?
Answers
A 150 g pinball rolls towards a springloaded launching rod with a velocity of 2.0 m/s to the west. The launching rod strikes the pinball and causes it to move in the opposite direction with a velocity of 10.0 m/s. What impulse was delivered to the pinball by the launcher?
Answers
Answer:
I = 1.8 N s, it is directed towards the right
Explanation:
For this exercise we use the relationship between momentum and moment
I = Δp
F t = p_f - p₀
in this case the initial velocity is v₀ = - 2,0 m / s and final velocity v_f = 10,0 m / s, we assume the positive right direction
I = m (v_f - v₀)
let's calculate
I = 0.150 (10.0 - (-2.0))
I = 0.150 (10 + 2)
I = 1.8 N s
as the impulse is positive it is directed towards the right
2. (a). Three forces that act on a particle are given by F1 = (20 i – 36 j + 73 k) N, F2 = (-17 i
+ 21 j – 46 k) N, and F3 = (-12 k) N. Find their resultant vector. Also find the magnitude
of the resultant to two significant figures.
(b). A vector has an x- component of -25.0 units and a y- component of 40.0 units. Find
the magnitude and direction of the vector.
Answers
A skateboarder traveling at 7.0 meters per second rolls to a stop at the top of a ramp in 3.0 seconds. What is the skateboarder’s acceleration?
*Please only answer if you know - and ABSOLUTLEY NOOOOOOOO LINKS*
Thank you! :)
Answers
Answer:
-2.33 m/s²
Explanation:
The computation of the skateboarder’s acceleration is shown below;
Acceleration means the change in velocity per unit with respect to time.
In the given case, the initial velocity is 7 m/s.
As in the question it is mentioned that it comes to a stop, so the final velocity would be zero.
And, The time elapsed is 3 seconds.
Now the following equation should be used
a = (v,final - v,initial) ÷ t
= (0 - 7)/3
= -2.33 m/s²
Which best describes vibration?
0
the distance traveled per unit in time
the action of moving back and forth quickly and steadily
the distance between one compression and the compression next to it
the action of moving through a material or substance
which best describes vibration
Answers
Answer:
the distance between one compression and the compression next to it
Explanation:
Answer:
The one above this wrong.
The correct answer is b. The action of moving back and forth quickly and steadily
Explanation:
yo i really need help please in order to pass this i’ll give a brainliest to anyway who knows the correct answer please no links
You toss a ball straight up into the air. Assume that air resistance is negligible.
PART A. Draw a free-body diagram for the ball at three points: on the way up, at the top, and on the bottom, and on the way down. Specifically identify the forces and agents acting on the ball.
PART B. What is the ball's velocity at the very top of the motion?
PART C. What is the ball's acceleration at this point?
Answers
Answer:
the answer is B I promise
A 5kg particle moving at a speed of 10m/s to the right makes an elastic collision with a wall and rebounds backward calculate the magnitude of the impulse of the body
Answers
Answer:
The magnitude of the impulse experienced by the particle is 100 kg.m/s.
Explanation:
Given;
mass of the particle, m = 5 kg
initial velocity of the particle, v₁ = 10 m/s
assuming the particle rebounds with same velocity backwards, v₂ = - 10 m/s
The impulse experienced by the particle is the change in linear momentum;
J = ΔP = mv₁ - mv₂
J = m(v₁ - v₂)
J = 5 (10 - (-10))
J = 5 (10 + 10)
J = 5(20)
J = 100 kg.m/s
Therefore, the magnitude of the impulse experienced by the particle is 100 kg.m/s.
A 20 kg child is traveling 3 m/s on an amusement park ride. What is the magnitude of the child’s momentum?
Answers
Answer:
[tex]\frac{60kgm}{s}[/tex]
Explanation:
momentum = mass * velocity
= 20kg * 3m/s
= 60kgm/s
If the current of a circuit is 1.5 A, and the power is 24 W. what is the resistor?
Answers
Answer:
The resistor has a resistance of 10.667 ohms.
Explanation:
By Ohm's Law, voltage ([tex]V[/tex]), in volts, is directly proportional to the current ([tex]i[/tex]), in amperes, and by definition of power ([tex]\dot W[/tex]), in watts, we have the following formula:
[tex]\dot W = i^{2}\cdot R[/tex] (1)
Where [tex]R[/tex] is the resistance, in ohms.
If we know that [tex]\dot W = 24\,W[/tex] and [tex]i = 1.5\,A[/tex], then the resistance of the resistor is:
[tex]R = \frac{\dot W}{i^{2}}[/tex]
[tex]R = 10.667\,\Omega[/tex]
The resistor has a resistance of 10.667 ohms.
Fill in the blank with either “insulators” or “conductors” to complete the sentence. The conductivity of a material is determined by the number of free electrons. have few or no free electrons.
Answers
Answer:
Insulators is the correct answer
Explanation:
A few electrons make up the insulators, which allow for very little electrical current to flow. While the conductors are excellent electrical conductors. Rubber is a poor insulator compared to metal, which is a very good conductor.
What are insulators?The insulator is a material that consists of a few electrons and they permit very little flow of electrical current. While the conductors are very good conductors of electricity. Metal is a very good conductor while rubber is a poor insulator.
Hence the answer is conductors possess free electrons, while insulators have few free electrons
The conductor has thus been used for wiring purposes and can be effectively used made to use energy; The insulator is a poor absorber and thus are unable to transfer energy.
Learn more about insulators follow.
brainly.com/question/19755578
SPJ6
I need help with one question on my homework. This is on the Specific Heat Capacity required practical.
Sample c has no solid residue left when evaporated. Suggest why it has a boiling point 1.7 degrees Celsius lower than distilled water.
Answers
Answer:
will mostly accord at the top of the boiling water my kind sir
Explanation:
Evaporation takes place only at the surface of a liquid, whereas boiling may occur throughout the liquid. In boiling, the change of state takes place at any point in the liquid where bubbles form. The bubbles then rise and break at the surface of the liquid.
How long will it take by 50W heater to melt 100g of ice at 0degreeC? Specific heat capacity of water = 4.2J/ (g0C), latent heat of fusion = 340 J/ g
Answers
Answer:
420 s
Explanation:
If there is a ball sitting on top of a hill with 100J of GPE. How much KE should there be at the bottom of the hill if there is no friction?
Answers
KE=1/2mv^2
Assume there would be no more potential energy,
GPE=KE
100J due to energy conservation law
What force is keeping the Earth in orbit around the Sun? * HELP FAST PLEASE.
1 point
A Centripetal Force due to gravity.
B Inertia due to gravity.
C Friction due to gravity.
D Magnetic Force due to gravity.
centripetal force acts *
1 point
A in the same direction as tangential speed.
B perpendicular to tangential speed but in the same plane.
C in the direction opposite tangential speed.
D perpendicular to the plane of circular motion.
Answers
Answer:
magnetic force due to gravity
Explanation:
nowno that is because that's what the geography teacher taught us back in don't remember but it's true
1. boiling point of water
water vapor
2. formed by condensation
sun
3. freezing point of water
clouds
4. gas form of water
precipitation
5. main cause of evaporation
32° F
6. rain, sleet, snow, or hail
100° C
Answers
Answer:
what is the question. . .
Answer:
see the answer above
Explanation:
How fast would a 20 kg dog have to run, to reach a momentum of 120 kg x m/s? Include unit in your answer. Worth 40 points!
Answers
Answer:
6 m/s
Explanation:
momentum= mass times velocity
120 = 20v
v = 120/20
Answer:
7
Explanation:
7
A charge of +5.0 x 10-6 C is situated 0.2 meters away from another isolated charge of -3.0 x 10-6 C. What is the magnitude of the electric force that these charges exert on each other? Is this a repulsive or attractive force?
Answers
Answer:
since the charges are of different nature it's a attractive force
Explanation:
magnitude of force=
9*10^9*5*10^-6*3*10^-6/0.04
= 3.375N answer
The fastest crossing of the Atlantic Ocean by an ocean
linger was made in July of 1952. The ship, the S.S. United States, traveled 4727 km east by northeast in 3 days, 15 hours, and 20 minutes. Assume that the ship had traveled the same speed, but directly east. What would the velocity of the S.S United States be in km/h?
Answers
In which of these can convection not occur
A. Gases
B.solids
C.liquids
D.fluids
Answers
I believe the answer would be B.solids.
Explanation:
Hope this helped!
In solids these can convection not occur and convection can occur in both liquids and gases, as they are both considered fluids. Thus, option B is correct.
However, convection cannot occur in solids, as the particles in solids are generally fixed in position and do not have the freedom to move and transfer heat through bulk motion as in convection.
A solid is one of the three fundamental states of matter, along with liquids and gases. It is characterized by having a definite shape and volume. Solids are composed of tightly packed particles, such as atoms, molecules, or ions, that are held together by strong intermolecular forces.
These particles vibrate in fixed positions but do not have the ability to move freely throughout the substance. As a result, solids maintain their shape and volume under normal conditions and exhibit relatively low compressibility compared to gases and liquids. Examples of solids include metals, rocks, wood, plastics, and ice.
Learn more about solid on:
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Why is a spherical bob preferred to bobs of other shapes for use in simple pendulum experiments
Answers
Answer
A spherical bob creates more control for the simple pendulum experiment. An irregular bob like a large piece of paper for instance, will create too much air resistance for a basic classical experiment to yield predictable results within the academic lab.
Please help, I'm taking a test mlnkhjbgvfgcfgvhb
What is the motion of the particles in this kind of wave?
A) The particles will move up and down over large areas.
B) The particles will move up and down over small areas.
C) The particles will move side to side over small areas.
D) The particles will move side to side over large areas.
Answers
Answer:
I think its A
Explanation:
Not 100 percent sure tho but they do go up and down in big movements.