Answer:
When thermal energy is added to a substance, its temperature increases, which can change its state from solid to liquid (melting), liquid to gas (vaporization), or solid to gas (sublimation).
Explanation:
Are the sharks using a contact or non-contact force to detect prey?
Answer:
They use a non-contact force
Explanation:
The shark applies a contact force on the prey. The shark is unable to apply force at a distance. The shark applies a non-contact force on the prey
Answer:
Non-contact
Explanation:
Because Non-contact beans they are not using friction against there bodies.
A student puts a beaker of boiling water where it touches a block of ice.
Which two statements are true?
A. Thermal energy will move from the boiling water to the ice.
B. Thermal energy will move from the air to the ice.
O c. Thermal energy will move from the air to the boiling water.
D. Thermal energy will move from the ice to the air.
O
Answer:
Option (A).
Explanation:
When a hot and a cold objects come in thermal contact with each other,exchange of heat takes place between them until thermal equilibrium is reached.
In this process thermal energy flows from high temperature to low.
Therefore, when a beaker of boiling water comes in touch with a block of ice,
Thermal energy starts flowing from boiling water to block of ice until equilibrium is established.
Option (A) will be the answer.
Carol's mother has skin cancer. Both Carol and her mother have fair eyes, hair, and skin. Carol read that cancer is a genetic disease and she is concerned that she will also get skin cancer no matter what she does.
2. Explain how other risk factors affect Carol's chances of getting skin cancer.
Answer:
Probably skin cancer
Explanation:
<3
the center of the sun is powered by which type of energy?
Answer: Its nuclear fusion
Explanation:
Answer:
Pretty sure it's Radiation.
A student bikes 5.00 km East to school in 30.0 min, realizes he forgot his calculator for physics, spends 30.0 min going back going home, and then races back to school in 27.0 minutes.
1.What is the students total distance traveled ?
2. Determine the students average speed ?
3. What is the students total displacement ?
4. Determine the students average velocity ?
Explanation:
Given data
distance = 5km
time taken to travel to school= 30 min
1. the total distance traveled is
from home to school+ school to home+ home back to school
5km+5km+5km= 15 km
2. Determine the students average speed
average speed is the total distance divided by the total time taken
= (5+5+5)/(30+30+27)
= 15/87 km/min
3 What is the student total displacement
the displacement tells how far a place is hence the displacement is 5km (i.e the school is 5km from his home)
4. Determine the students average velocity
a. speed home to school
v= 5/30= 0.166 km/min
b. school back home
v= 5/30= 0.166 km/min
c. speed home to school
v= 5/27= 0.185 km/min
Average velocity = (0.185 + 0.166 + 0.166)/3= 0.517/3= 0.17 km/min
Which has covalent bonds?
A.) glucose
B.) table salt
C.) steel alloy
D.) Iron oxide - rust
Answer:
A.) glucose
Explanation:
Answer:
A. glucose
Explanation:
pay attention to the lesson
A 70-kg boy is sitting 3 m from the ground in a tree. What is his gravitational potential energy
m x h x 9.8 m/s squared
70 kg x 3 m x 9.8 m/s squared= 2058 Joules
6. An asteroid is traveling in a straight line at a constant speed of 327 m/s. How long will it take for a displacement of 732 km to occur?
A. 0.62 min.
B. 37.3 min.
C. 2.42 hrs.
D. 2.24 sec.
Answer:
the answer is b. 37.3 min..
Definition of displacement
Answer:
the moving of something from its place or position or the occupation by a submerged body or part of a body of a volume which would otherwise be occupied by a fluid
Explanation:
c:
PLS AWNSER !
Space is essentially a vacuum where there is no matter whatsoever. Would you expect any type of wave (transverse, longitudinal, or surface) to travel through space? Why or why not?
Answer:
Surface.
Explanation:
Sorry, I had a lot of info on this, but "ContentBot" deleted my answer, so just trust me, okay?
Which of the following is not a component of fitness? A. Cardiovascular fitness B. Muscular endurance C. Pulmonary endurance D. Body composition
Answer:
C. Pulmonary endurance
Explanation:
I'm pretty sure it's "C" because cardiovascular and pulmonary endurance are the same thing and usually you'd hear cardiovascular more than pulmonary.
Sorry if I'm wrong!
Answer:
c
Explanation:
i just took the test
A stone will sink because it is _____ than water
Answer:
Heavier
Explanation:
The stone is a heavy object, therefor, it'll sink fast
Because stone is much smaller than its gravity force
6.
_____is the rate at which an object
changes position
Answer:
Velocity is the rate at which an object changes position
A wildbeest runs with an average speed of 4.0m/s for 15s . What was the distance travelled in meters
Answer:
60.0m im sorry if im wrong but this is what i got
Explanation:
Answer:
The Answer Is 60 m
Explanation:
Distance d = ?
Time t = 15 s
Average speed vavg = 4.0 m/s
You can rearrange the equation vavg = d/t to solve for distance travelled d.
vavg = d/t
d = vavgt
= (4.0 m/s) (15s)
= 60 m
is the amount of . space that matter in an object occupies. is anything that has.
An airplane flies with an unknown velocity due east. The plane
is experiencing wind of 12 m/s due north which produces a
resultant velocity of 35.11 m/s northeast. Determine the
unknown velocity produced by the plane engines.
Answer:
32.99m/s
Explanation:
Using the formula for calculating the resultant velocity according to Pythagoras theorem
R² = 12²+x²
35.11² = 12²+x²
X² = 35.11²-12²
X² = 1232.7121-144
X² = 1088.8121
X = √1088.8121
X = 32.99m/s
Hence the unknown velocity produced by the plane engines is 32.99m/s
The unknown velocity produced by the plane engines will be "32.99 m/s".
Given:
Resultant velocity,
R = 35.11 m/sWind speed,
12 m/sBy using the Pythagoras theorem, we get
→ [tex]R^2= 12^2+x^2[/tex]
→ [tex]35.11^2=12^2+x^2[/tex]
→ [tex]1232.712=122+x^2[/tex]
→ [tex]x^2= 1099.8121[/tex]
→ [tex]x = \sqrt{1088.8121}[/tex]
→ [tex]= 32.00 \ m/s[/tex]
Thus the answer above is right.
Learn more:
https://brainly.com/question/17675290
a girl is 8 years older than her younger sister. The sum of their ages is 64 years, what is her age in years
Answer:
let the age of elder sister = x+8
then let the age of younger sister be x
sum of their ages = 64
according to the question,
x+8+x = 64
2x+8 = 64
2x = 64-8
2x = 56
x = 56/ 2
x = 28
so, the age of younger sister is 28 years
and the age of elder sister is x+8= 28+8= 36years
Which variable is the result of the experiment?
Answer:
independent variable is the answer! hope that helps :D
Answer:
The independent variable is the core of the experiment and is isolated and manipulated by the researcher. The dependent variable is the measurable outcome of this manipulation, the results of the experimental design.
An experiment is done to measure the acceleration of free fall of a body from rest. Which measurements are needed?
Answer:
you need the speed and the time it took in order to find the acceleration and you can find the acceleration by using this equation: A= S ÷ T where a is acceleration, s is speed and t is time.
Measurements are needed to measure the acceleration of free fall of a body from rest is the height and time of fall.
let us assume,
the body is falls from some height (h) the Initial velocity would beu = 0
The distance (h) is traveled by the body in the vertical direction with constant acceleration. the total time is taken by the body would be = tAcceleration is constant so, the equation of motion in the perpendicular direction can be applied.
That is,
[tex]y = ut + (1/2) at^2[/tex]
in this case,
y = h and a = acceleration of free fall
Solution:
Putting values in the equation:
[tex]h = 0 + (1/2) at^2\\t^2 = 2h/a \\a= 2h/t^2[/tex]
The correct answer would be the height and time of fall.
Learn more about measures of acceleration:
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Describe the two forms of the material that Emily synthesized.
Answer:
hi someone already awnsered this so dont be mad at me awnser is below
awnser: One form has a definite shape, and the other form is soft and flows easily.
A pot of water is heated on a gas-flame stove and begins to boil. Which two
transfers of thermal energy involved in this system are examples of radiation?
O A. From the burner to air that is not touching it
B. In the surrounding air as air currents develop
C. From the burner to a nearby spoon
O D. From the water to the air
Examples of radiation are from the burner to air that is not touching it. In the surrounding air as air currents develop. The correct options are A and B.
What is radiation?Radiation is the emission or transmission of energy through a material medium or across space in the form of waves or particles. Radiation is the heat transfer method in which the heat is transferred without any direct contact between the two objects.
Given that a pot of water is heated on a gas-flame stove and begins to boil. Which two transfers of thermal energy are involved?
Here the heat is transferred through the radiation in which no direct contact is there between the two objects. The two thermal heat transfer energies are from the burner to air that is not touching it and In the surrounding air as air, currents develop.
Therefore, examples of radiation are from the burner to air that is not touching it. In the surrounding air as air currents develop. The correct options are A and B.
To know more about radiation follow
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The Internet Engineering Task Force (IETF) sets standards for webpage design.
a) true
b) false
This graph shows the displacements and times for the winner of a horse race. What was the average speed of the horse that won the race? 0.05 m/s 20 m/s 45 m/s 285 m/s Coordinate graph titled Displacement versus Time for the Winner of a Horse Race showing Time in seconds on horizontal axis ranging from zero to twenty five and Distance in meters on vertical axis ranging from zero to three hundred. The graph shows a line rising from zero to three hundred after fifteen seconds.
Answer:
The answer is 20m/s
Answer:
it 20m/s
Explanation:
i did the k 12 test
What are some examples of how we use science in or daily lives?
Answer: Science is involved in cooking, eating, breathing, driving, playing, etc. The fabric we wear, the brush and paste we use, the shampoo, the talcum powder, the oil we apply, everything is the consequence of advancement of science. Life is unimaginable without all this, as it has become a necessity.
Explanation:
Answer:
Science is at work in almost every part of our lives from the computer we use to the foods that we consume. For example take the yellow corn that we are use to eating it is actually a result of bio-agriculture.
Explanation:
Question 4 (2 points)
(03.07)
Which of the following lines is parallel to x = 4? (2 points)
a.
3y=9
b.
y=4
c.
x=2
d.x = y
Answer:
x=2
Explanation:
.................
Which of the following are you not likely to see on a graph?
A. Dependent Variable
B.Independent variable
C. A Prediction
D. Units
Answer:
a
Explanation:
It is not possible for a graph to NOT change with the dependent variable never changing.
The town hall building is situated close to Boojho’s house. There is a clock on the top of the town hall building which rings the bell every hour. Boojho has noticed that the sound of the clock appears to be much clearer at night. Explain.
Answer:
At night we experience quietness more. At this time, sounds of object will be heard more clearer
. A book is moved once around the perimeter of a table of dimensions 2.00 m by 3.00 m. If the book ends up at its initial position
a) what is its displacement? 0
Answer:
10
Explanation:
displacement would be 10 because knowledge
Which of the following are not examples of circular motion?
Check all that apply.
A. race car going around a turn in the road
B. basketball falling toward the hoop after being thrown
C. roller skating down a hill
D. earth going around the sun
E. the path of a soccer ball rolling on the ground
Match each physical property of matter to the appropriate definition
What are the properties and definitions?
Answer:
Theses are the answer
Explanation:
