Answer:
Dual Energy X-Ray Absorptiometry (DEXA) is used to measure body composition.
Explanation:
As a standard method for body composition analysis, DEXA has high accuracy along with hydrodensitometry. Its advantage is that it can measure the body composition of bone density, body fat and muscle mass for different parts.
Alex rides on a bike that starts from rest and accelerates to a speed of 20 m/s in 8 seconds. What is Alex’s acceleration?
Answer:
20m/s
Explanation:
Alex's acceleration is also Alex speed
Which of the following most directly shows how physics affects society?
A. A car comes equipped with side air bags.
B. A business conducts meetings over the Internet.
O C. A surgeon performs a heart transplant.
D. A singer wins an award for a song she wrote.
the answer is definitely A.
1 point
If there is a surge in the demand for electricity in the UK, which of
these power stations can be used to meet this demand quickly? *
Nuclear
Gas
Wind
Solar
Submit
Answer:
Option A nuclear
Explanation:
The rate of electricity production in nuclear power plant is much higher as compared to the rate of electricity generation in gas, wind and solar power plants.
Thus, in case where large amount of electricity is to be produced in a short period then one must rely on nuclear power plants.
Therefore, option A is correct
Answer: Option A- Nuclear power station
Explanation: During a sudden increase in demand, Nuclear power stations can be used easily to supply the needed energy as they have an extremely short start up time. This means that the energy can be supplied in a short period of time.
pls answer fast and correct i will give brainlest who ever gets it correct
The boy’s skateboard trips on the stairs and comes to a stop. This shows inertia because:
You and your friend see a ball rolling across the floor to the right. Your friend says
that because it is moving to the right, it must have a net force on it pushing it to
the right. Do you agree with her? Why or why not?
Your answer
Answer:
unforturnitly
Explanation:
step unstepable
ANSWER ASAP!!!!!
Chemotherapy is used to treat many types of cancer. A researcher discovers that modifying treatment by
altering the dosage of a group of drugs and incorporating radiation therapy increases the effectiveness
in treating a particular type of cancer.
Read the information above. How should the researcher proceed?
A. He should request an interview with a representative from a major newspaper.
B. He should keep his findings secret to prevent them from being misused.
C. He should report his findings to a reputable science journal.
D. He should encourage doctors nationwide to use the new course of treatment.
Answer:
He should report his findings to a reputable science journal.
PLEASEE HELPPLook at the diagram of two students pulling a bag of volleyball equipment. The friction force between the bag and the floor is 4 N. What is the net force acting on the bag? What direction is the bag moving in?
Answer:
The net force is 21 N, and the bag will go to the right.
Explanation:
You can find the net force by adding both values of the boy and the girl, and then subtracting four from it. You can also figure out which direction its moving by looking at which side is exerting the most force, which would be the right side.
Hope it helps!
A mouse ran 25.45 meters in 11 seconds, stopped for 5 seconds to eat a piece of cheese, ran 2.5 meters in 1.2 seconds to hide behind a shelf, and finally ran another 9 seconds a distance of 15 meters to its home. Calculate the average speed of the mouse in m/s.
Which term describes the radiation produced by alpha decay?
A. A beta particle
B. An electromagnetic wave
C. A helium nucleus
D. An electron
Answer:
C. Helium nucleus
Explanation:
During alpha decay, a radioactive atom releases an alpha particle that is equivalent to the nucleus of a helium atom.
Answer:
Person above me is correct C. Helium Necleus
Explanation:
Preview this picture of a roller coaster. Does it make you feel safe? How does the picture reinforce the idea of roller coasters being safe as stated in the article?
Answer: The coaster tracks serve to channel this force — they control the way the coaster cars fall. ... If the tracks slope down, gravity pulls the front of the car toward the ground, so it accelerates. If the tracks tilt-up, gravity applies a downward force on the back of the coaster, so it decelerates.
Explanation: They may be safe though!
Can you please help me figure out the work for the missing quantities?
Answer: set up proportions
Explanation:
the law of conservation of momentum states that, if left alone what happens to the total momentum of two interacting objects that make up a system
Answer:
It remains the same
Explanation:
At any point in time the total momentum of two objects interacting remains the same
This follows the laws of space(space is uniform)
Answer:
(Question) Which of these quantities is a vector?
(Answer) momentum
(Question) What is the representation of the momentum vector?
(Answer) an arrow
(Question) What is the formula for the momentum p?
(Answer) p=m⋅v
(Question) What happens to the total momentum in a system of two interacting objects when a net force is exerted upon the system?
(Answer) The total momentum is conserved.
(Question) What is the magnitude momentum of a 2 kg body that moves with a speed of 3 m/s?
(Answer) 6.0
Explanation:
just did the quick check UwU
chris and molly wins $2400 in a competition they share the money in the ratio2:3 how much money do they each receive ?
Answer:
chris gets 960 and molly gets 1440
Explanation:
add the ratio up and divide
2+3=5
2400/5=480
480x2=960
480x3=1440
960+1440= 2400
pls help me 6th grade science second two pics are the possible answers
Answer:
C
Explanation:
Plotting the data points would get the graph closest to C
A round ball is kicked into the air at an angle of 39 degrees above the horizontal. The
initial velocity of the ball is 32 m/s.
A. How long is the ball in the air?
B. What is the horizontal distance traveled by the ball?
C. What is the maximum height reached by the ball?
Answer:
b
Explanation:
as speed (velocity) increases, potential energy increases true or false
Answer:
true
Explanation:
Do longitude lines run horizontally (east-west) or vertically (north-south)?
Please write in complete sentences.
How does density affect refraction?
Diamonds are a very dense material. Predict what would happen to the light ray if you projected it from the air through a diamond.
answer both questions
(1.) The Phenomena of Refraction Occurs when a Ray (Here Light) enters a Relatively Denser or Rarer Medium and Due to the Change in Density, the Speed of the Incident Ray Decreases or Increases Respectively.
(2.) If a light ray projected through a diamond, the light would refract drastically.
If a force of 0.05 N acts on a body of mass 100 grams. Determine the acceleration at which that body moves.
Answer:
a=f/m=0.05/0.1kg
Explanation:
calculate it
hope I helped
i. )Which unit can be used to express force?
a. Nm
b. kg/s 2
c. kg • m/s 2
d. m/s
ii. )Newton’s second law of motion relates an object’s acceleration to
a. its mass.
b. its velocity.
c. the net force acting on it.
d. two of the above.
iii. )An object is accelerating when it
a. speeds up
b. slows down.
c. changes direction
d. any of the above.
iv. )Doubling the net force acting on an objecta. doubles the acceleration
b. decreases it acceleration.
c. cuts its acceleration in half.
d. does not affect its acceleration.
v. ) If you push a 20 - kilogram mass with a force of 40 N, what will be the object’s
acceleration?
a. 40 m/s2
b. 20 m/s2
c. 10 m/s2
d. 2 m/s2
The correct choices, sequentially and respectively, are c., d., d., a., d.
A 350kg motorcycle is moving at 20m/s. It then speeds up to 30m/s. How much work did the engine do to accelerate?
Answer:
momentum= mass× velocity
=350kg (30-20) m/s
=3500kgm/s
A scientist is studying a newly created substance. She performs a test in which she keeps adding heat to the substance until it catches on fire. What type of property is she measuring?
Answer:
Chemical property (flammability).
Explanation:
An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).
This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.
In this scenario, a scientist is studying a newly created substance. She performs a test in which she keeps adding heat to the substance until it catches on fire. Thus, the type of property she is measuring is a chemical property (flammability).
Flammability can be defined as a chemical property which measures the ability of a substance (matter) to ignite or burn due to the presence of oxygen and heat.
What word
When an object is vibrating, we say that it has energy in its kinetic energy___
completes the sentence?
Answer:
that is which produces Sound
Answer:
The right answer is "stores"
Explanation:
All objects that are moving will have some energy in their kinetic energy store.
Fill in the blank: A _____ is dissolved by a solvent
Why didn’t the liquid methane change phase before 2007?
The basic reason is that before 2007 their were not enough energy in the liquid methane molecules to break the bond between them after 2007 the energy of the molecules increases which breaks the bond and the liquid methane changes phase.
Why didn’t the liquid methane change phase before 2007?It had been summer since 2002, but the lake didn’t evaporate until 2007.
The molecular attraction between methane molecules is stronger the amount of energy absorbed by liquid methane was not enough to break the inter molecular forces until 2007.
After 2007, the sun had transferred enough energy so that the kinetic energy of the methane molecules increased enough to overcome the attraction between them.
The liquid methane evaporated and the molecules started moving away from each other.
Thus the liquid methane starts to change phase after 2007 by getting enough energy from the sun.
To know more about the phase change follow
https://brainly.com/question/25664350
A man carries a 25 kg box 5 meters across the room. How much work is being done?
Answer:
Given :-Mass = 25 kg
Height = 5 m
Acceleration due to gravity = 10 m/s
To Find :-Work done
Solution :-We know that
W = mgh
W = 25 × 5 × 10
W = 250 × 5
W = 1250 J
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The kidneys help the body preserve water. When an animal has not had enough to drink, the kidneys signal the body to absorb water. The animal produces little urine, so it loses less water. During this process, the kidneys work in conjunction with which body system?
A
respiratory
B
integumentary
C
excretory
D
immune
bonus question fredo bang or nba young boy
how do we use sounds in ways other than just listening?
Answer:
talking and we can make our own sound
Explanation:
Sound could be an element for detecting people or entities, This is very useful for blind people. Sounds could also heal your chakra or make you feel like dancing.
Hope I helped. :)
- Valenteer
True or False: Modulated waves can be analog or digital.
Answer:
True
Explanation:
Modulation waves(schemes) can be analog or digital. An analog modulation scheme has an input wave that varies continuously like a sine wave.
Please help
What is the angle of the reflected ray in the diagram above?