Answer:
Its B
Explanation:
I searched it up :>
I desperately need help on my last problem! Please help!
A moving car of mass 500 kg collides with a stationary truck of mass 1500 kg, and the two vehicles lock together on impact. The combined velocity of the car and truck after the collision is 20 m/s. The velocity of the car before the collision is _______ m/s.
What is the velocity of the car before the collision?
Answer:
The car was approximately moving at 80m/s
I need help on this please!
Answer:
i think it is no interference
Explanation:
because both of the arrows haven't interfered. If you look up some of the pictures of each answer choice that is on your question, it will have that picture shown.
A human cannon ball with a mass of 80 kg is fired out of a cannon with a force of 2,400N. find the acceleration
A human cannon ball with a mass of 80 kg is fired out of a cannon with a force of 2,400 N. The acceleration is 30 m/sec²
What is acceleration?The rate at which an item changes its velocity is known as acceleration, a vector quantity. If an object's velocity is changing, it is acceleration. The net acceleration that objects get as a result of the combined action of gravity and centrifugal force is known as the Earth's gravity, or g. It is a vector quantity whose strength or magnitude is determined by the norm and whose direction correlates with a plumb bob.
force = mass . acceleration
a = F/m = 2400/80
a = 30 m/sec²
A human cannon ball with a mass of 80 kg is fired out of a cannon with a force of 2,400 N. The acceleration is 30 m/sec²
To learn more about acceleration refer to the link:
brainly.com/question/12550364
#SPJ2
Coal is an example of kinetic or potential energy
Which is occurring when work is being done?
a. Energy is being reverted.
b. Energy is being decreased.
c. Energy is being increased.
d. Energy is being transferred.
Answer:
C) Energy is being increased.
help please
whats an example of kinetic energy
Answer:
A semi-truck travelling down the road has more kinetic energy than a car travelling at the same speed because the truck's mass is much more than the car's. A river flowing at a certain speed comprises kinetic energy as water has certain velocity and mass.
Explanation:
Answer:
An airplane has a large amount of kinetic energy in flight due to its large mass and fast velocity.
Explanation:
Can someone help me with theses
Answer:
Answer to #1, is D.
Explanation:
The theory of plate tectonics states that the Earth's solid outer crust, the lithosphere, is separated into plates that move over the asthenosphere, the molten upper portion of the mantle. This is also, a theory with the ring of fire.
Answer:
D
Explanation:
Because it is impossible for a near 1,000,000 ton well anything to float
Most of the sun's radiation passes through Earth's atmosphere and is absorbed by land and water. The diagram below shows some of the ways in which air is
What kind of energy transfer is shown by the movement of the air labeled B in the diagram?
Answer: B
Explanation:
Radio waves are an example of potential or kinetic energy
Answer:
True
Explanation:
What is the relationship between speed, frequency, and wavelength?
a
As the speed and frequency increase, the wavelength increases
b
Speed equals wavelength times frequency
c
As the wavelength decreases the speed decreases
d
Speed equals wavelength divided by frequency
Answer:
B. Speed = Wavelength x Frequency.Explanation:
1. What could scientists learn by using the Law of Superposition?
2. How could this help people learn about earthquakes?
3. Is there any way to determine when the magma actually intruded with these clues only?
4. Could we use fossils to help determine the age of rocks (and thus the age of magma intrusions)?
5. What other methods could scientists use to date rocks?
Answer:
Explanation:
1.The Law of Superposition is a fundamental principle of geology that states that in a sequence of undisturbed layers of sedimentary rocks, the oldest rocks are at the bottom and the youngest rocks are at the top. Scientists can use this law to determine the relative ages of rocks and the order in which they were deposited.
2.The Law of Superposition can help people learn about earthquakes because it provides a way to study the history of the Earth's crust and the geological forces that have shaped it over time. By studying the layers of rock and the patterns of deformation and displacement caused by past earthquakes, scientists can develop a better understanding of how earthquakes occur and how they may impact different areas in the future.
3.It may be possible to determine when the magma intruded by using additional clues, such as the presence of index fossils, the type of rocks present in the intrusion, and the relative ages of the surrounding rock layers. However, these clues would need to be interpreted in the context of other geological features and events in the area to arrive at a reliable estimate of the age of the intrusion.
4.Yes, fossils can be used to help determine the age of rocks, including magma intrusions. Certain types of fossils, known as index fossils, are useful for dating rocks because they are known to have existed only during a specific period of time. By identifying the index fossils in a rock layer, scientists can determine its approximate age.
5.Other methods that scientists can use to date rocks include radiometric dating, which involves measuring the decay of radioactive isotopes in minerals, and paleomagnetic dating, which uses the record of Earth's magnetic field preserved in rocks to determine their age. These methods can provide absolute ages for rocks and are often used in conjunction with the Law of Superposition to develop a more complete understanding of the history of the Earth's crust.
please help me! the first person to answer this correctly will get a brainlist
The _____ provides product certification.
NPMA
NSF International
NRA
NEHA
AFDO
nicki minaj invented basketball
(giving away points)
Answer:
that's nice, what about cardi b?
Explanation:
.
Yes she did lolllll and LeBron James Invented Rap
1. Where is the water in the pot going?
2.How does E? Emulsion, the celebrity food scientist, define a physical reaction and what examples does he give?
Answer:
Explanation:
Students were creating graphs to illustrate the energy transformations that occur as a roller coaster moves along a track. The letters A-D on Graph 1 represent the position of a roller coaster as it moves along a track. The numbers 1-4 on Graph 2 were supposed to represent the energy of the roller coaster at positions A-D, but the students got their data mixed up. How should the bars in Graph 2 be ordered so that they match to the energy of the roller coaster as it moves from position A to B to C to D?
A4 B2 C1 D3
A- it's at the top and not moving so its all potential
B- Bottom so no potential, a little is lost to friction- a little thermal, it's moving so ther'es kinetic
C- in the middle hieght- some potential, lost more to friction so more thermal, not moving so no kinetic
D- bottom, so no potential. more energy lost to friction. still moving so some kinetic
Water is a valuable resource because it can be used for both human consumption and electricity generation. Which of the following choices is a poor way to conserve water?
A) Doing a full load of laundry in the mornin
B)Using the dishwasher only when it’s full.
C) Turning off the lights when you are not home
D) Taking a long shower to keep your brother from having any hot water.
Running is an example of potential or kinetic energy
In science class, students constructed an explanation on the composition of soil. Which student offered the BEST explanation? (AKS 2e)
!!!(The file has the image)!!!
Answer choices:
A.
Student A
B.
Student B
C.
Student C
D.
Student D
Write a paragraph about pull.
Answer:A force can be described as a push or a pull. Pushes and pulls can be seen to act on objects when they begin to move, speed up, slow down or change direction.
The image gallery on this page shows children at play using push and pull actions to move objects. Children use push and pull all the time while at play. While playing, students learn to manipulate objects and materials and make observations about their actions.
Teachers may use this teaching resource over a number of lessons to explore and develop their students' understanding that a push or a pull affects how an object moves or changes shape.
Explanation:
The continent of Antarctica spans across the South Pole. Which of the following accurately describes its climate?
A. Currently the temperature is -21°C with 6 inches of snow accumulation.
B. Windy, cold and icy conditions will occur over the next week.
C. A polar desert with a history of low levels of precipitation.
D. Warmer than normal temperatures in the past 2 weeks.
Answer:
I think the answer is B.
plss help i have a timer i will give u brainliest Todd can throw a baseball from the outfield all the way back to home plate. Why does he have to move his arm in order to make the ball fly all that way
because if you do not their is no force acting upon the ball.
In a physical change, the molecules inside a substance_____________before and after.
A.stay the same
B.change
C.vary between
D.travel between
A = Travel Between :)
What front does this symbol represent on a weather map?
Answer:
cold warm or both dont really know
Explanation:
A marble is placed at Location W. When the marble is released, it rolls down the track.
At which location does the marble have the least amount of potential energy? ASAP
Answer:
Z
Explanation:
Answer:
The Answer Is Z,
Explanation:
Also Here Is A Picture Of My Teacher Being Frozen:
Amir and Gracie left some evidence of breakfast behind. Luckily, some of it can be changed back. What does Mosa write down as clues that a substance will easily change back?
Answer:
You could say that it was not a chemicly change because that is when you say this is just a example that if you cook eggs you cant un-cook them
Explanation:
When lights are turned off, the electrical circuit is _________, because _________. A. closed, because it stops electricity from flowing through the circuit.
B. open, which stops electricity from flowing completely through the circuit.
C. tangled, it is in a mess. D. broken, and does not let electricity flow through.
Answer:
I would say B makes the most sense here
Climatologists and meteorologists both use data to make predictions related to climate and weather. Which statement best indicates a difference between climate and weather?
A. Climate data is obtained by collecting and averaging weather totals from many years, while weather is the temperature, rainfall, humidity and barometric pressure that is currently occurring.
B. Climate is the average of daily rainfall, temperature and humidity values each day, whereas, weather documents the totals on a daily basis.
C. Climate is the accumulation of weather data over many years and weather is the accumulation of climate data over many years.
D. Climate pertains to the rainfall and temperature over a long period of time, whereas, weather data only includes rainfall.
Answer:
the answer is A because I did this in 5th grade
Natalia began to draw a diagram to compare bases and acids.
Two overlapping circles with the word bases above the left circle and acids above the right circle. There is an X in the left circle in the portion, which is not part of the overlap.
Which label should be written in the area marked X?
conducts electric current
produces OH– ions
tastes sour
reacts with carbonates.
Answer:
first one
Explanation:
Answer
conducts electric current
Explanation:
PLS HELP FIND THE AVREGE KENETIC ENERGY!!
Answer: if you gogle it it will tell you the awenser
lanation:
In a chemical reaction, the bonds in the molecules
A.stay the same
B.change
C.vary
D.travel
Answer:
B. change
Explanation:
In a chemical reaction, the bonds in the molecules break apart and form new ones, thus b is the correct answer because they change.