Answer:
IV family history of breast cancer or not.
DV chance of developing breast cancer. Hypothesis Someone with a family history of breast cancer will have a higher chance of developing it.
IV: Where the grass is placed: tree shade or direct sunlight.
Dv:The grasses growth rate
Hypothesis: Grass will grow faster in direct sunlight as opposed to tree shade
IV: Fresh veggies and fruit or not
Dv: how much the students eat: will they eat more or less?
Hypothesis The students will eat more in the lunchroom when Fresh veggies and fruits are served.
IV: The dog exercise everyday for 1 hour or not.
DV: The dogs barking: less or more.
Hypothesis: The dog will bark less when someone rings the doorbell if he exercises for 1 hour every day.
Explanation:
Observation When I wish my face before bed, I get less breakouts in the morning.
Question Does nightly face washing prevent morning breakouts?
IV Washing face at night or not
Dv How much breakouts in the morning.
Hypothesis Washing your face nightly decreases the occurrence of morning breakouts.
Which statement is true?
A. When a gas condenses to a liquid, it absorbs energy.
B. When water boils, it releases energy.
C. When ice melts, it absorbs energy.
D. When water freezes, it absorbs energy.
Explanation:
The correct answer is option B
Answer:
C. When ice melts, it absorbs energy.
Explanation:
When ice melts, it is getting hotter by absorbing energy and changes from a solid to a liquid. This is an endothermic reaction.
how is light reflected from a prism
Answer:
White light entering a prism is bent, or refracted, and the light separates into its constituent wavelengths. Each wavelength of light has a different colour and bends at a different angle. The colours of white light always emerge through a prism in the same order—red, orange, yellow, green, blue, indigo, and violet.
When is the pressure of the man on the ground more – lying position or standing
position? Explain.
Hi,
The man on the ground in standing position has more pressure. This is because when he stands, only his legs are in contact with the ground. While lying, his body is more in contact with the ground, therefore, he exerts less pressure.
To the point, a man standing position on the ground had more pressure.
More is the area of contact, less is the pressure efforted.
Thank you...
Slove these problem physics
Answer:
element name = neon
no of proton = 10
no. if neutron = 9
atomic no. = 10
atomic weight = 20.17179u
it lies in group 18 and period 2
it is nonmetal because it is a noble gas .
hope this helped you ☺️
After the experiment, scientists organize and (blank) the data.
Does anyone know what goes in the blank? Im doing a crossword puzzle and I need help, please. (/w\)
Answer:
analyze
Explanation:
The same 200 N force acts on an area greater than 2m2.
What happens to the pressure?
the pressure is (200 N)/(10 cm2)×(100 cm/M)2=200,000 pa
A car moves with an average speed of 45 mph. How long does a car take to travel 90 miles?
Answer:
It took 2 hours
Explanation:
[tex]{ \bf{time = \frac{distance}{speed} }} \\ [/tex]
distance is 90 miles
speed is 45 miles per hour
[tex]t = \frac{90}{45} \\ \\ t = 2 \: h[/tex]
Answer:
2 hours
Explanation:
45 times 2 is 90
in the Newton's Third Law of Motion state three characteristics
Answer:
Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.
A car starting from rest accelerated at a rate of 0 .5 m/s up to 2 km what would be the final velocity of the car and how much time would it take to cover 1.6
Using third equation of kinematics
[tex]\\ \rm\longmapsto v^2=u^2+2as[/tex]
[tex]\\ \rm\longmapsto v^2=0^2+2(0.5)(1.6)[/tex]
[tex]\\ \rm\longmapsto v^2=1.6[/tex]
[tex]\\ \rm\longmapsto v=\sqrt{1.6}[/tex]
[tex]\\ \rm\longmapsto v=0.4m/s[/tex]
Now using 1st equation of motion
[tex]\\ \rm\longmapsto v=u+at[/tex]
[tex]\\ \rm\longmapsto t=v-u/a[/tex]
[tex]\\ \rm\longmapsto t=\dfrac{0.4-0}{0.5}[/tex]
[tex]\\ \rm\longmapsto t=\dfrac{4}{5}[/tex]
[tex]\\ \rm\longmapsto t=0.8s[/tex]
Answer:
Using third equation of kinematics
[tex]\begin{gathered}\\ \rm\longmapsto v^2=u^2+2as\end{gathered}[/tex]
⟼v
2
=u
2
+2as
[tex]\begin{gathered}\\ \rm\longmapsto v^2=0^2+2(0.5)(1.6)\end{gathered}[/tex]
⟼v
2
=0
2
+2(0.5)(1.6)
Bill and Amy want to ride their bikes from their neighborhood to school which is 14.4 kilometers away. It takes Amy 40 minutes to arrive at school. Bill arrives 20 minutes after Amy. How much faster (in meters/second) is Amy’s average speed for the entire trip?
Answer:
Hey mate....
Explanation:
This is ur answer....
The image attached is the answer....Hope it helps!
Brainliest pls!
Follow me! :)
what is gravitational ? what are the factors that affect gravition ? witre the SI unit of gravition
The gravitational force is a force that attracts any two objects with mass. Two major factors, mass and distance, affect the strength of gravitational force on an object.Newtons kg-2 m2 is it's SI unit.
plsss helpp will give brainliest!!!
here are answer choices for ALL of the blanks! :)
-flexibility
-cardiovascular fitness
-muscular fitness
Answer:
1. Flexibility.
2. Muscular Fitness
3. Cardiovascular Fitness
4. Cardiovascular Fitness
5. Flexibility
6. Muscular Fitness
7. Cardiovascular Fitness
Any two waves that meet as they travel through the same medium will interact. If the two waves are in phase their crests will coincide and they will experience _____ interference, producing a wave with a(n) _____ amplitude.
Answer:
constructive
alpitude
what is pulley? How does it help in lifting weight?
Hey there!
A pulley is a "system" that has a rope attached to carry heavy materials off the ground. Once you pull the rope, the heavy item will be carried.
Hope this helps!
Have a great day!
A crane can lift 5000 kg mass to the height 10m in 10 sec. What is its power?
Answer:
49.050 KW
Explanation:
work done = PE
= mgh
=5000×9.81×10
=490500J
power = workdone/Time taken
= 490500/10
= 49050 watts
= 49.050kW
A cyclist travels at 15 m/s during a sprint finish. What is this speed in km/h
Answer:
54km/hr
Explanation:
Since we have to complete m/s to km/h.
we can simply divide the m/s by (5/18)
so we get 54km/hr
Convert: 110 km/h to m/s
Answer:
30.5555556 m/s
You can write like "30.56 m/s".
Answer:
Below
Explanation:
You can convert km/h to m/s by dividing the value by 3.6
110 km/h / 3.6 = 30.5556 m/s
*not sure if your teacher wants you to round to sig figs for this but here it is anyways. Because 110 has 2 sig figs it would be :
31 m/s
Hope this helps! Best of luck <3
a hot metal block is placed into 50g of water in an insulated container the water increases in temperature from 20c to 32c the specific heat capacity of water is 4200j/kgk calculate the quantity of heat energy supplied to the water from the metal
Answer:
25,000 joules
given the formula
Q=Mc(final temperature - initial temperature)
M=50 grams convert to kilogram 0.5
c= 4200 j/kg/k
final temperature=32c
initial temperature=20c
How can radio waves & microwaves communicate over similar distances?
the density of the metal is 8.9g/cm³.what does it mean. What is the importance of the value
Density of the metal is 8.9g/cm^3
It means per 1cm^3 Volume there is 8.9g of Mass occupied .Density:-
[tex]\boxed{\sf Density=\dfrac{Mass}{Volume}}[/tex]
SI unit:-
SI unit of density is kg/m^3
CGS unitCGS unit of density is g/cm^3
Round 0.010229 to four sig figs
It would be 0.01023.
0.010229 has 5 sig. fig.'s (leading zeros do not count)
So rounding to 4 sig. fig.'s is just a matter of rounding off the last digit, which leaves you with 0.01023.
Convergent plate boundaries are when plates
collide
move past each other
move apart
Explanation:
Collide is your answer
have a good day.
Read the PDF to help.
Explanation:
The answer is magnetic north pole
Can someone tell me which is which on what i put i dont know what i should put
ОООО
A dog runs from his home & goes 400 m around the block before reaching back home. What is the dog's total distance & displacement?
Distance: 0 m & displacement: 400m
Distance: 400 m & displacement:0m
Distance: Om & displacement:4 m
Distance: 4 m & displacement: Om
Answer:
A dog runs from his home & goes 400 m around the block before reaching back home. What is the dog's total distance & displacement?
Distance: 400 m & displacement:0m
Explanation:
Option B is the answer.
Hope it helps.
Two astronomers are viewing temperature data from each of the sun's layers, but the layers aren't identified. Describe one way the scientists can use temperature to identify which layer they are studying.(1 point) The highest temperatures are from the corona. The highest temperatures are from the corona. The lowest temperatures are from the photosphere. The lowest temperatures are from the photosphere. The lowest temperatures are from the core. The lowest temperatures are from the core. The highest temperatures are from the radiative zone.
Here we can study the different temperatures of each one of the layers of the sun.
We will find that the way that the scientist can identify which layer are they studying is "The lowest temperatures are from the photosphere."
A brief description of the temperature of each layer is:
Center of the sun: about 15 million K
Radiative Zone: Goes from 7 million K to 2 million K.
Convection Zone: goes from 2 million K to 5800K
Photosphere: Is in average 5800 K , but there are sunspots with lower temperatures, of around 3800 K.
Chromosphere: goes from 4300 K to 8300 K
Corona: Around 2 million K.
So now we can analyze each of the options to see which ones make sense.
A) The highest temperatures are from the corona.
This is false, we can see that in the center and in the radiative zone we have larger temperatures than in the corona.
B) The lowest temperatures are from the photosphere.
While on average the temperature of the photosphere is larger than the smaller temperature of the chromosphere, in the photosphere we have the sunspots, and there we have the smallest temperatures in the whole sun, so this is true.
C) The lowest temperatures are from the core (or center).
Clearly false, there we have the larger temperatures.
D) The highest temperatures are from the radiative zone.
Again false, the larger temperatures are in the center.
So the only true option is "The lowest temperatures are from the photosphere."
If you want to learn more, you can read:
https://brainly.com/question/12117482
Answer:
The lowest temperatures are from the photosphere
Explanation:
I just took this quick check on connexus
what is 342 m/s in kilometers per hour?
Answer: 1231.2 km/h
Explanation: 342 x 3.6 ( because 1 m/s equal 3.6 km/h)
why is there potential for wind energy in the upper himalayanx
Answer:
Favorable sites include the tops of smooth, rounded hills; open plains and water; and mountain gaps that funnel and intensify wind. Wind resources are generally more favorable for electricity generation at higher elevations above the earth's surface
Is ambition a good or bad thing?
Answer:
some amount of ambition is good for your motivation but excess ambition is dangerous.
How many electrons can carbon accept from other atoms while bonding? (1 point)
two
six
eight
four
Answer: Four electrons
Explanation:
The number of electrons that can be accepted by carbon from other atoms while bonding is four. The correct option is D.
What is chemical bonds?A chemical bond is what holds atoms in molecules together. Electrostatic forces between positively charged atomic nuclei and negatively charged electrons, the positions of which in space are determined by quantum mechanics, generate bonds.
Atoms form chemical bonds to strengthen their outer electron shells. The chemical bonding type maximizes the stability of the atoms that form it.
Carbon forms covalent bonds with other elements or carbon atoms. Carbon compounds are extremely diverse, with sizes ranging from one to thousands of atoms.
Because carbon has four valence electrons, it can form four covalent bonds to achieve a full outer energy level.
Thus, the correct option is D.
For more details regarding chemical bonds, visit:
https://brainly.com/question/15444131
#SPJ6
