Answer:
-5 m/s^2
Explanation:
[tex]acceleration = \frac{change \: in \: velocity}{time} \\ \\ = \frac{15 - 25}{2} \\ \\ = \frac{ - 10}{2} \\ \\ = - 5 \: m {s}^{ - 2} \\ \\ negative \: sign \: represents \: that \: \\ object \: is \: slowing \: down.[/tex]
Explanation:
Acceleration is the change in velocity over time.
a = Δv / Δt
a = (15 m/s − 25 m/s) / 2.0 s
a = -5.0 m/s²
The magnitude of the acceleration is 5.0 m/s².
3. What methods are you using to test this (or each) hypothesis?.
Answer:
Traditional Method->>>>I'm not 100% sure of my answer but gl buddy
Step 1 Identify the Null Hypothesis and the Alternative Hypothesis
Step 2 Identify α (Level of Significance)
Step 3 Find the critical value(s)
Step 4 Find the test statistic
For a Proportion: Hand calculation
TI 83/84 – Use 1PropZTest (See Handout H-404)
For a population mean (with α known):
TI 83/84 - Use Z-Test (See Handout H 404)
For a population mean (with α Not known):
TI 83/84 - Use T-Test (See Handout H-404)
Step 5 Draw a graph and label the test statistic and critical value(s)
Step 6 Make a decision to reject or fail to reject the null hypothesis
Reject - The test statistic falls within the critical region.
Fail to Reject - Test statistic does not fall within the critical
region.
P-Value Method:
P-value is the area determined as follows:
Left Tail Test: p-value is the area to the left of the test statistic.
Right Tail Test: p-value is the area to the right of the test statistic.
Two Tailed Test: p-value is twice the area bounded by the test statistic
Make a decision to reject or fail to reject the null hypothesis:
Reject if p-value ≤ α
Fail to reject if p-value > α
Hope this help! :)
how can an electrical current produce a magnetic field?
Answer:
by charging the coil
Explanation:
do you know how a magnet grabs another magnetic material and move it closer, an electric current passes through the coil making it act like a magnet by charging the coil called electromagnetism
PLASE HELP, DUE IN 10 min
Need the correct answer ASAP
Will give the brainliest !!
#1
Voltage remains constant whole way in circuit so it's voltage#2
Same 9V at all three resistors.
#3
Let's take a look at ohms law
[tex]\\ \rm\Rrightarrow \dfrac{V}{I}=R[/tex]
I is current[tex]\\ \rm\Rrightarrow I\propto \dfrac{1}{R}[/tex]
So if one resistor is taken out resistance becomes less so flow of current becomes moreIn mammals, the weight of the heart is approximately 0.5% of the total body weight. Write a linear model that gives the heart weight in terms of the total body weight. Use the model to find a) the weight of the heart of a human whose weight is 185 lbs. Answer in units of lbs.
Answer:
The weight of heart of a human is 0.93 lbs.
Explanation:
Given that,
Approximately weight of heart is 0.5 % of the total body weight.
Weight of human = 185 lbs
Let the the weight of total body is w and weight of heart is [tex]w_{h}[/tex].
We need to calculate the weight of heart of a human
Using given data
[tex]w_{h}=0.5\times w[/tex]
Where, h = weight of heart
w = weight of human
[tex]w_{h}=\dfrac{0.5}{100}\times 185[/tex]
[tex]w_{h}=0.93\ lbs[/tex]
Hence, The weight of heart of a human is 0.93 lbs.
Which two phrases describe critical thinking skills used in the pursuit of
science?
A. Using knowledge and experience to interpret an observation of a
phenomenon
B. Developing a philosophical argument for encouraging interest in
answering scientific questions
O
C. Reading scientific papers in order to pursue personal interests
D. Evaluating various solutions to scientific problems based on
ethical considerations
E. Applying logic to decide which answer to a question is most likely
to be true
1. According to Newton's Third Law of motion, what are the two forces that interact called?
Answer:
action and reaction forces
Explanation:
These two forces are called action and reaction forces and are the subject of Newton's third law of motion. Formally stated, Newton's third law is: For every action, there is an equal and opposite reaction. The statement means that in every interaction, there is a pair of forces acting on the two interacting objects.
A student throws a ball up straight up. What happens to the ball's energy as it rises?
Answer:
B. The kinetic energy of the ball change into potential energy as the ball rises.
Explanation:
This can seem a little bit confusing at first, but once you understand Kinetic Energy, you'll get it right away. Kinetic Energy is energy an object has when it is moving. So for example, you have kinetic energy when you run, a pen has kinetic energy when you drop it in class, and the ball has kinetic energy as it rises.
However, because of outside forces, objects with kinetic energy will eventually lose it. These forces can be anything from friction as an object slides across a surface, to the negative acceleration due to gravity.
In this question, the force working against the motion of the ball is gravity. As you know, when you throw something up, it has to come down, because of gravity. As the ball goes up, it has enough kinetic energy that it continues its upward motion, however it slowly looses that energy, causing it to slow to a stop before falling back to the ground.
On the way up, the energy of the ball changes from this kinetic (moving energy) to what we call potential energy. Potential energy is exactly what is sounds like, it is the potential for something to begin moving. So, as the ball goes higher, it has a lower chance of continuing to go up (meaning it's loosing it's kinetic energy) and higher chance of falling back down (meaning it's gaining potential energy).
Hope this helps.
The left hemisphere of the brain controls the right side of the body. Please select the best answer from the choices provided T F.
Answer:
True
Explanation:
The different sides control the opposite side of the human body
The left hemisphere of the brain controls the right side of the body. So, the given statement is True.
What is Brain?The brain is defined as the most complex part of the human body, a three-pound organ that is the seat of intelligence, the interpreter of the senses, the initiator of body movement, and the controller of behavior. The brain is said to be the source of all the qualities that define our humanity.
The brain is usually divided into symmetrical left and right hemispheres with each hemisphere in charge of the opposite side of the body, so the right brain controls the left hand while the right hemisphere also takes sensory input from the left and vice versa.
Therefore, the given statement is True.
Learn more about Brain, here:
https://brainly.com/question/29248801
#SPJ7
A weight force of 10 N force acts on an object while the object moves 20m along horizontal ground. How much work is done by the weight force on the object? a) 0.5 J b) 2 J c) 10 J d) zero e) 200 J I already know it's not 200 J because I got the question wrong. Please show work!
Answer:
e) 200 J
Explanation:
Work done by a force on an object is the energy required for a force to move that object over a distance. It can be calculated using the formula:
W = F × d
Where; W = work done
F = force applied
d = distance
According to this question, F = 10N, d = 20m
W = 10 × 20
W = 200 J or N/m
what is a multiple motion ? give example
Answer:when a body possesses more than one simple motion, it is called a multiple motion.
Explanation:you are traveling by a train. Your wrist watch is also sharing the linear motion of the train. But the hands of the watch are also undergoing rotational motion. Thus they have 2 kinds of motion, I, e, Multiple motion.so also the blades of the fan in the train have multiple motion (a linear motion of the train and the rotation).
Which expression represents this?List the number of atoms for each element in CO2:
Carbon:
Oxygen:
Answer:Carbon
Explanation:
Carbon is CO2
differentiate gravitational force and acceleration due to gravity
Answer:
I hope this answer is correct
Explanation:
Difference Between Gravitation and Gravity
Gravitation is referred to the force acting between two bodies which can be represented as the F=(GM1M2)/R2 which means gravitation force is proportional to the product of the masses of the object 1 and object 2 and is inversely proportional to the square of the distance between them. The gravitational force between earth and any object is known as gravity.
Difference Between Gravitation and Gravity
Gravitation Gravity
It is a universal force It is not a universal force
It is a weak force It is a strong force
The force is F=(GM1M2)/R2 (G= gravitational constant) The force is F=mg (g=acceleration due to gravity)
The direction of gravitational force lies in the radial direction from the masses The direction of the force of gravity is along the line joining the earth’s center and the center of the body. Its direction is towards the center of the earth.
The force can be 0 when the separation between bodies is infinity The force of gravity can be 0 at the center of the earth
It requires two masses It requires only one mass
These were some difference between Gravitation and Gravity. If you wish to find out more, download BYJU’S The Learning App.
RELATED ARTICLES:
Gravity Acceleration Due to Gravity
Relative density has no unit .why ?
Answer:
Relative density is a ratio of the density of a certain material to the density of a reference material. Relative density has no unit, because the units of the material in question cancel out with the units of the reference material. For example, say a cooking oil’s density is 0.9 g/cm^3.
Explanation:
What are the differences between open star clusters and globular star clusters.
Answer:
Globular star clusters are very symmetrical in shape, and are densest toward their centers. Open star clusters are more irregular in shape. Globular clusters orbit in the halo of our galaxy, centered on the galaxy's center and expanding above and below the galactic disk. Open star clusters tend to orbit within the disk.
Explanation:
I hope this helps!
True or false elastic energy is a type of kinetic energy
Answer:
True
Explanation:
The statement "elastic energy is a type of kinetic energy" is absolutely false.
What is Kinetic energy?Kinetic energy may be defined as a type of energy that is typically possessed by an object due to its motion. It is characterized as the work which is required in order to accelerate a body of a given mass from rest to its initiate velocity.
Elastic energy is a type of mechanical potential energy that is kept in reserve in the arrangement of a material or physical system as it is conquered by elastic deformations.
Elastic energy is a type of energy that is occurred when any objects are temporarily compressed, stretched, or typically disfigure in any manner.
Therefore, the statement "elastic energy is a type of kinetic energy" is absolutely false.
To learn more about Kinetic energy, refer to the link:
https://brainly.com/question/25959744
#SPJ6
What is the formula for finding Δt?
Answer:
☆<《HOPE IT WILL HELP YOU 》>☆
Explanation:
The formula for finding TRIANGLE is Half + Base × Hight
H+B×Hplease mark my ans as BRAIN LISTHow did saturn gets its name?
Answer:
Like all of the planets, Saturn is named after a character in Roman mythology. Saturn is named after the god Saturnus, the god of agriculture and harvest. Saturn is equivalent to the ancient Greek god Kronos.
How does an accretion disk around a neutron star differ from an accretion disk around a white dwarf?.
(PLEASE HELP ASAP)
In what ways can you determine the number of valence electrons in an atom
using the periodic table? (select all that apply)
The number of valence electrons equals the number in the ones place for groups 3-12
The number of valence electrons equals the number in the ones place for groups 1,2 and 13-18
The number of valence electrons equals the number in the tens place for groups 1,2and 13-18
The number of valence electrons equals the number in front of the "A" for groups 1A-80
Answer:
The valency of atoms can be determined by looking at the groups of the periodic table. Hope this helps!
Explanation:
Question 2
Volcanic activity during Earth’s formation is responsible for contributing a significant portion of CO2 and H2O to the atmosphere. Explain how volcanoes can change the temperature and composition of the Earth’s atmosphere over time. Refer to your experimental data or graph as evidence.
Answer:
can make for colder winters by keeping the sun out more
Explanation:
1.Most of the particles spewed from volcanoes cool the planet by shading incoming solar radiation
2.lower temperatures in the troposphere & change atmospheric circulation patterns
scieducaredu earthdatanasagov
How and why can two lethal elements combine to form an essential
compound for health?
Answer:
Two lethal elements can combine to form an essential compound for health by undergoing a chemical reaction such that the properties of the individual elements are different from the properties of the product and are no more lethal
Example Mercury and Sulfur combine to form cinnabar which is used as a medicine to relieve pain, antiseptic, and to cure diseases
Mercury and sulfur combines because mercury readily combines with sulfur at high temperatures
Explanation:
Mercury is a lethal element that also has harmful effects on the neurological system
Sulfur is lethal when too much of it is consumed
In your own words explain how "Carrying Capacity" plays a vital role in today's world and our future as well
Answer:??????
Explanation:
There are five different types of muscles in exercise physiology.
A.
True
B.
False
Answer: The answer is B) False
Explanation: There are only three muscle types in the exercise physiology.
Skeletal Muscle
Smooth Muscle
Cardiac Muscle
Hello people ~
The voice box is also called as
(a) stomach
(b) heart
(c) larynx
(d) mouth
Answer:
(c) larynx
Explanation:
It is the region of the throat that contains the vocal cords and is used for swallowing, speaking, and breathing.
I am joyous to assist you at any time.
Answer:
larynx
Explanation:
This part is present under our throatThis contains many vocal cords.It helps us to speak .It also helps in swallowingCould use a lil help still due by 11:00pm!!
A series and a parallel circuit each have two resistors of 2 Ohms each. A third resistor of 2 Ohms is added to each of these circuits. The overall resistance of the ____________ circuit ____________.
A.
Parallel, increases
B.
Parallel, decreases
C.
Series, increases
D.
B and C only
Answer:
D, parallel decreases and series increases.
Explanation:
Which of the following are examples of projectile motion?
check all that apply
A. a basketball being shot toward the basket
B. a bowling ball rolling down the lane
C. a dog running along a sidewalk
D. a baseball hit for a home run
Answer: A. a basketball being shot toward the basket
Explanation: The definition of projectile motion is the motion of an object thrown or projected into the air, subject to only the acceleration of gravity. So, the basketball is the object being thrown and the person throwing the ball is aiming it to go into the basket making that the path of trajectory. Hope that makes sense and helps!
Can someone please explain quantum physics to me?
Answer:
Put simply, it's the physics that explains how everything works: the best description we have of the nature of the particles that make up matter and the forces with which they interact. Quantum physics underlies how atoms work, and so why chemistry and biology work as they do.
Answer:
qorks with atomic booms and nuclearbombs on how atoms react when charged
Net force acting on a 100 kg man standing in an elevator accelerating downward with a = 9. 8m/s^2 comes out to be:(a) 980N(b) 580N(c) 1380N(d) zero
Answer:
(d) zero
Explanation:
Net acceleration = (a - g)
a is downward so it is positive
F(net) = ma(net)
F = 100 x (9.8 - 9.8)
F = 0
The correct option is (d).
7. The ___ is the basic unit of structure of
all living things.
cells are the basic unit of all living things
Answer:
Cell
Explanation:
Because I took this class last year and also learned it in biology