e Card A: What is the effect of magnetic
angement on magnetic force?
Experiment Results
✪
sensor reading:
1.4 mT
sensor reading:
4.3 mT
J
sensor reading:
8.1 mT
Evidence Card C: What is the effect of rail
material on the kinetic energy of the car?
Experiment Results
Test 1
Test 2
Test 3
Rail material
wood
aluminum
iron
Distance
between car
and launcher
10 cm
10 cm
10 cm
Kinetic energy
after the car
was launched
3.1kJ
2.9 kJ
2.2kJ
Answers
Answer:
Explanation:
Related Questions
what is a force that is caused by air that slows objects down?
Answers
Friction drag force causes objects to slow down as they move through a fluid, such as air or water.
Answer:
Drag
Explanation:
Drag is also used to slow down the speed of a rocket ship after using the thrusters.
If two blocks have the same mass, twice the force results in _____
Answers
Answer:
YO 5
Explanation:
do it yourslef dum ack
Explanation: it seems most reasonable
What is the name of the system that standardizes measurements in science
Answers
Explanation:
the international system of unit of the aside from the branch system International is a unit is is the metric system used in Sin industries and medicine
Answer:
Metric system
Explanation:
Also known as SI system
A Tug Boat's engines can exert 10,000 N of Force to drag another ship 1 kilometer. How much work was done to drag the ship 1000 meters?
Answers
force = 10,000 N
distance= 1000 meters or 1 km
work done = Force * Distance
work done= 10000* 1000 = 10000000 Nm or 10000 kNm
How do we know there has not been an increase in the number of earthquakes? Officials from the U.S. Geological Survey, the government agency that keeps track of earthquakes, point to statistics. On average, there have been no more earthquakes so far in 2010 than there were in previous years.
What Happens During Earthquakes?
In reality, it's not the number of quakes that has gained our attention, but the devastating impact quakes can have. Earthquakes are very natural—it's inevitable that they'll happen because of the way the planet works. The earth's surface is made up of tectonic plates that fit together like puzzle pieces and are always moving past each other. When two of the plates' edges get caught, stress builds up at the fault line—the crack between the plates. When the plates are finally able to break free of each other, the stress is released, and an earthquake occurs. Earthquakes of varying strengths happen every day, usually at fault lines. Some of these quakes have a high magnitude, while others are relatively weak. But it's often where an earthquake takes place that determines whether it will be something that goes largely unnoticed, or a disaster that affects thousands of people.
What Is Changing?
In the past, earthquakes were not as much of a problem because Earth's population was smaller, and cities were less populated.
"Look at some of the big [earthquakes] recently," said Debarati Guha-Sapir of the World Health Organization. Guha-Sapir cited some earthquakes that took place in areas where the population had increased in recent years, making the quakes more serious. "Had the Izmit or Bhuj quakes [of 1999 and 2001] happened 30 years ago, the events would have been relatively insignificant, as the [populations] of these cities were a third of what [they were when the earthquakes happened]. Increasing population density makes a small event into a big one."
Some of the earthquakes that took place in early 2010 occurred in highly populated areas, as well. More people are moving into megacities that happen to be built on fault lines—and many cities are on fault lines. Of the 130 cities with more than one million people, more than half are in earthquake zones, making them more prone to earthquakes.
In many of these cities, officials have drawn up laws requiring that buildings be designed and constructed to endure earthquakes. But some cities, particularly those in developing countries, lack the resources to do this. There, people are rapidly putting up substandard buildings that can't withstand the force of the shaking earth. For example, the Haiti earthquake took place near the nation's crowded capital. There was a great deal of destruction because there were "too many people crammed into a city that wasn't meant to have that many people and have an earthquake," said University of Miami geologist Tim Dixon.
Another reason quakes seem worse is that we're paying more attention. Everyone noticed when the Haiti earthquake was quickly followed by the Chile earthquake. Many people watched the news and the Internet for updates on these disasters, unable to believe that they were seeing two major earthquakes in such a short period of time. But eventually, the earth will have a period when earthquakes are minor or in unpopulated areas. Then people won't notice quite so much anymore.
"People are paying attention to the violent planet we've always lived in," said Dennis Mileti, a seismic researcher. "Come back [at a time when] there have been no [noticeable] earthquakes, [and] most people will have forgotten [about them] again."
According to the article, what is one reason why it seems as if the world is experiencing more earthquakes than usual?
Answers
Answer: because there has not been one in years
Explanation: there was not on now 2023, 2022, 2021, 2020, and 2019
Answer:
The number of earthquakes has not increased because earthquakes didn't happen in the USA for a while.
Explanation:
Which has a greater impact on the kinetic energy of an object the object's mass or the object's speed?
Answers
Answer:
mass
Explanation:the larger the mass the higher the kinetic energy
A car in stop-and-go traffic starts at rest, moves forward 12 m in 8.0 s, then comes to rest again. The velocity-versus-time plot for this car is given in the figure. What distance does the car cover in the first 4.0 seconds of its motion?
Answers
Answer:
48 meters per second
Explanation:
Distance travelled in a velocity - time - graph is the area under the graph. The distance covered in the first 4 seconds of its motion is 4.8 meters
From the question and the given graph, the following parameters are given:
Total distance travelled S = 12m
The total time = 8 s
The velocity (V) of the car = ?
We can get V by using the area of a trapezium formula. That is,
S = 1/2( a + b )V
Where from the graph;
a = 2 and b = 8
Substitute a, b, and S into the above equation
12 = 1/2( 2 + 8 )V
24 = 10V
V = 24/10
V = 2.4 m/s
The shape of the distance covered in the first 4 seconds in the graph is triangle.
Area of a triangle = 1/2 x base x height
where
Area = distance covered
base = time = 4s
height = speed V = 2.4
The formula can be re-written as:
S = 1/2 x t x V
substitute all the necessary parameters into the above formula
S = 1/2 x 4 x 2.4
S = 4.8 m
Therefore, the distance covered in the first 4 seconds of its motion is 4.8 meters
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2. What happens to the wavelength as the frequency increases?
Answers
Answer:
the wavelength gets shorter
Explanation:
The number of complete wavelengths in a given unit of time is called frequency (f). As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.
Explain the answer in CER
How can sound extinguish a fire?
Answers
Answer:
the oscillation can be exploited to create a vacuum that separates air molecules from the sounds of the flame
If a steel nail is wrapped 8 times with an insulated copper wire and each end of is attached to a 1.5 V battery, we find that it will lift the weight of 2 large paper clips. We hypothesized that for each 8 coils, you will be able to pick up one additional paper clip. When we ran the experiment, we observed and recorded that when we added 8 more wraps around the nail (16 coils) we could lift 4 paper clips and when we added 8 more wraps (24 coils) we could lift 6 paper clips. Choose the correct conclusion to the experiment.
1. We redesign the test and hope for better results.
2. We concluded that every time we add 8 wraps to the nail the total number of paper clips lifted doubled.
3. We concluded that our original test flawed. Because of the results, 8 coils should be able to pick up 2 paper clips. We will check our original test with a fresh battery.
4. We concluded that something went wrong with the experiment since it didn't give us the results we expected.
Answers
Answer:
2
Explanation:
i think that it would be 2 because it makes the most sense
2.) we concluded that everytime we add 8 wraps to the nail the total number of paper clips lifted doubled.
Mac and Suzanne cut holes in the bottom of two cups and connect them with a string. When Mac whispers into one cup, Suzanne can hear him through the other. What is the best reason to explain why this happens?
A. Sound waves can travel great distances.
B. Sound waves from whispering have a higher frequency.
C. Sound waves travel better through solids than gases.
D. Sound waves produce an echo.
Answers
Answer:
C
Explanation:
Because you can feel vibrations through solids but not through gases
Answer:
c
Explanation:
Because you can feel vibrations through solids but not through gases
Who likes horses? i mean LOVES Horses?
Answers
How do you increase the amplitude of a wave? In science.
Answers
Answer:
increase the volume/intensity (im assuming you are talking about sound, if not let me know)
Explanation:
rate&thanks pls, and mark brainliest if im correct :)
Answer:
i got u
Explanation:
You increase the intensity or volume
If you want to increase the amplitude of a wave, you just have to make larger motions. Since the amplitude of a wave is the size of the wave (the distance from the top of the wave to bottom *vertical*). If you make a smaller motion the distance between the the top and the bottom is smaller, and if you make a bigger motion it is a longer distance from the top to bottom.
I hope this helps! :)
what area of technology is the camera classified in? And WHY
a. Information and Communication
b. Bio-related and Agricultural
c. Medical d. Environmental
e. Production, which includes manufacturing and construction
f. Transportation
g. Energy and Power
h. Nanotechnology
Answers
Answer:
a. Information and Communication
Explanation:
The modern photographic camera evolved from the camera obscura. The functioning of the camera is very similar to the functioning of the human eye. The first permanent photograph was made in 1825 by Joseph Nicéphore Niépce.
A driver is driving a 6371 kg lorry. After spotting a hazard, the driver applies the brakes. The lorry decelerates uniformly and comes to a stop 60 m after the brakes are applied. Estimate the braking force needed to stop the lorry.
Answers
Answer:
The estimated braking force needed to stop the lorry is zero, based on the given information and calculations. However, it's important to note that this result is likely not accurate, as some force is required to stop a moving object. It's possible that additional information or calculations are needed to obtain a more realistic estimate of the braking force.
Explanation:
To estimate the braking force needed to stop the lorry, we can use Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a).
In this case, the lorry decelerates uniformly, so the acceleration is constant. The initial velocity is assumed to be zero since the lorry comes to a stop. The final velocity is also zero. Therefore, we can use the equation:
Final velocity squared (vf^2) = Initial velocity squared (vi^2) + 2 * acceleration (a) * distance (d)
Since vi = 0 and vf = 0, the equation simplifies to:
0 = 0 + 2 * a * d
Solving for acceleration (a), we have:
2 * a * d = 0
a = 0
Since the acceleration is zero, it means that the braking force needed to stop the lorry is also zero. This is likely not an accurate result as some force is required to stop the lorry. It's possible that additional information or calculations are needed to accurately estimate the braking force.
The braking force required to stop a 6371 kg lorry after spotting a hazard and applying the brakes is what the question is asking for. The lorry decelerates uniformly and comes to a stop 60 meters after the brakes are applied.
The following steps will guide you on how to calculate the braking force:
Step 1: Determine the mass of the lorry which is 6371 kg. This will be denoted as m.
Step 2: Determine the distance travelled by the lorry, which is 60 m.
Step 3: Determine the time taken by the lorry to stop. This can be done by using the formula for uniform deceleration, which is a = (v-u)/t where v is the final velocity, u is the initial velocity and a is the uniform deceleration. Since the lorry comes to a stop, its final velocity is zero and its initial velocity is unknown.
However, we can assume that the lorry was initially travelling at a constant speed before spotting the hazard. Therefore, we can assume that the initial velocity was equal to the average velocity of the lorry before the brakes were applied.
This can be calculated using the formula v = d/t where d is the distance travelled and t is the time taken. The average velocity can therefore be calculated as follows: v = d/t = 60 m/t
Step 4: Rearrange the formula for uniform deceleration, a = (v-u)/t, to find u which is the initial velocity. Since the lorry comes to a stop, we know that v = 0.
Therefore: u = v - at where a is the uniform deceleration and t is the time taken to stop which is also equal to the time taken for the lorry to travel the distance of 60 meters. Substituting for v, we get: u = - at
Step 5: Calculate the acceleration of the lorry using the formula a = (v-u)/t. Since the final velocity is zero, we get: a = -u/t = -(-at)/t = a The acceleration is negative since the lorry is decelerating.
Step 6: Calculate the braking force using the formula F = ma where F is the braking force and m is the mass of the lorry. Therefore: F = ma = (-ma) since a is negative = (-6371 kg) (a) Therefore, the braking force required to stop the lorry is -6371a N where a is the uniform deceleration calculated in Step 5.
For more such questions on lorry decelerates
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True or False? If the ball hits any line when it is NOT on the serve, it is in bounds. Pickle Ball for PE
Answers
Answer:
Well according to volleyball rules, if the ball hits the out of bounce line, its considered in.
A crowbar with the length of 200 cm is used to lift the load of 600 Newton . If the distance between fulcrum and load is 0.75 . Calculate Effort , Mechanical advantage and Velocity ratio
Answers
Answer:
a. Effort = 960 Newton
b. Mechanical advantage (M.A) = 0.625
c. Velocity ratio (V.R) = 1.67
Explanation:
Given the following data;
Load = 600 N
Length of crowbar = 200 cm
Length of load arm = 0.75 m
Conversion:
100 cm = 1 m
X cm = 0.75 m
Cross-multiplying, we have;
X = 0.75 * 100 = 75 cm
First of all, we would find the effort arm;
Effort arm = length of crow bar - length of load arm
Effort arm = 200 - 75
Effort arm = 125 cm
Next, we would determine the mechanical advantage (M.A) of the crow bar;
Substituting the values into the formula, we have;
M.A = 0.625
To find the effort of the crow bar;
Making "effort" the subject of formula, we have;
Effort = 960 Newton
Lastly, we would determine the velocity ratio (V.R);
V.R = 1.67
Answer:a. Effort = 960 Newton
b. Mechanical advantage (M.A) = 0.625
c. Velocity ratio (V.R) = 1.67
Explanation:
What type of circuit is this in the picture? (Lesson 4.07)
A: Parallel
B: Open
C: Ac
D: Series
Answers
Answer: hope this helps ♡
A: Parallel
Explanation:
It's a parallel circuit because it has two or more paths for the electricity to flow through (the paths are parallel).
Answer:
A
Explanation:
why is it difficult for a car to round a curve at high speed
Answers
Answer:
Because the force required to produce this acceleration equals the mass of the car x acceleration, the group of the car is the same but the acceleration is a lot more hence a much bigger force is required. So this is why it's harder for cars to corner at a high speed rather than lower.
Answer:
Vehicles are heavy and have a lot of inertia. This means that if you drive too fast on a curve, your vehicle will keep going straight instead of going around the curve, no matter how hard you drive or slow down to keep it in your lane. Centrifugal force creates a strong outward pull on your vehicle. So all you need to do is slow down before entering a corner. Reducing your speed when you are already on a bend can cause your car to skid.
What atoms should be in the products of the chemical reaction?
Answers
Why does height affect bounce efficiency?
Answers
help me with this please
Answers
care labels
2. do not dry wash
do not iron
Describe 3 factors an engineer should take into consideration when choosing material for building the pipes in a pipeline
Gr. 8
Think it has something to do with Viscosity, Density, and Pressure but not sure what
Answers
Answer: 1. Material being transported 2. The temperature of the material being transported 3. How long the pipes will be there (lifespan)
Explanation: 1. - The pipe builder should consider the material being transported to choose the correct material of the pipes to use, so they last long and can hold the material.
2. - Similar to 1, the pipe builder should consider the temperature of the material to choose the correct material of the pipes to use, so the pipes don’t break and function properly.
3. - If the pipe builder uses a material that can hold the material, that’s great! If that material will last a short time, it would not work if the pipes were to be used for a long time.
The things you said before about viscosity, density, and pressure are also correct. The correct answers are mainly talking about factors of the material being used in the pipes.
hope this helped :)
Which effect is created when two sound waves that are close in pitch
interact?
O A. Echoes
O B. Loudness
C. Beats
O D. Intensity
Answers
Answer:
C. Beats
Explanation:
When waves are interfering with each other, the sound is louder in some places and softer in others. As a result, we hear pulses or beats in the sound.
Answer:
beats
Explanation:
got it right
Which statement is true about heat and light energy?
A. Heat and light energy always move from colder objects to warmer ones.
B. Heat energy moves in many different directions and light energy moves in only one direction.
C. Objects do not produce both heat energy and light energy.
D. Some objects can absorb both heat energy and light energy.
Answers
This image shows an overhead view of Atlanta’s buildings, structures, and surrounding areas and a heat map of the area. What is the most likely reason for the high temperature in the regions indicated in dark red? two maps of Atlanta, one showing an overhead view of Atlanta's buildings and structures and other showing the heat levels in the area Atlanta’s roads and buildings absorb more of the Sun’s radiation, causing higher temperatures than in surrounding regions. Atlanta’s trees and forests absorb more of the Sun’s radiation, causing higher temperatures than in surrounding regions. The rural areas around Atlanta absorb more heat than the urban areas, causing an overall increase in the city’s temperatures.
Answers
The answer is A..................
Answer:
answer is a
Explanation:
just do it
Edward deposited $10,000 into a savings account 5 years ago. The simple interest rate is 3%. How much money did earn in interest?
Answers
Which light wave could be emitted from Light Source 2?
A
B
C
explain your answer
Answers
Answer:
A. :)
Explanation: HOPE THAT HELPED HAVE A NICE DAY!
Electromagnetic waves are created when an electric field collides with a magnetic field. Electromagnetic waves are the type of waves emitted from the light source.
What is an electromagnetic wave?EM waves are another name for electromagnetic waves. Electromagnetic radiations are made up of electromagnetic waves created when an electric field collides with a magnetic field.
Electromagnetic waves may alternatively be defined as the combination of oscillating electric and magnetic fields. Maxwell's equations are solutions to electromagnetic waves.
Electrically charged particles experiencing acceleration create electromagnetic waves, which can then interact with other charged particles and exert force on them.
In light source 2 the particle is electrically charged and accelerates the electromagnetic wave. Hence Electromagnetic waves are the type of waves emitted from the light source.
To learn more about the electromagnetic wave refer to the link;
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Holden is trying to determine the velocity of his race car. He went 20 meters east, turned around, and went 40 meters west. His car was 20 meters from the starting line. This took 5 seconds.
What is the car’s average velocity?
4 m/s east
4 m/s west
12 m/s west
12 m/s east
Answers
The average velocity can be found by calculating the total displacement of the car and dividing it by the total time.
The car's average velocity is "4 m/s west".
First, we will find the total displacement as follows:
Total Displacement = 20 m (East) + 40 m (West)
Taking East direction as positive and west direction as negative, we get:
Total Diplacement = 20 m - 40 m
Total Displacement = - 20 m = 20 m (West)
Now, the average velocity of the car will be:
\(Average\ Velocity = \frac{Total\ Displacement}{Total\ Time}\\\\Average\ Velocity = \frac{20\ m\ (West)}{5\ s}\\\\\)
Average Velocity = 4 m/s west
The attached picture shows the description of average velocity.
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Answer: b
Explanation: just put B :)
h a l p me PlEaSe
gagagag i need elp0
Answers
Answer: -I think its a)
Answer:
I think B, if not then A