Answer:
Cabinets are made to open one at a time so that there's not much of space taken up when all the drawers are open. Hope this helps.
In the nucleus ______________
tell cells what to do and how to change.
Answer:
i believe it is dna
Explanation:
if i remember correctly if the dna tells the cell what to do and how to do it
8
The range of a target is found to be 20 km. A
shell leaves a gun with a velocity of 500 ms-'.
What must be the angle of elevation of the gun
if the ground is level?
Radiation present in the environment but not produced by humans is called ______.
Answer:
background
Explanation:
physical sciences Practical test
so ummmm what about ?
because I cant see any actual question?
A kangaroo has a maximum gravitational potential energy during one jump of 770 J
Helppppp
When the kangaroo lands on the ground 14% of the maximum gravitational potential energy is transferred to elastic potential energy in one tendon.The tendon has an unstretched length of 35.0 cm
When the kangaroo lands on the ground the tendon stretches to a length of 42.0 cm
Calculate the spring constant of the tendon.
[5 marks]
Show ur working out
Answer:
k = 44000 N/m
Explanation:
Given the following data;
Maximum gravitational potential energy = 770 J
Elastic potential energy = 14% of 770 J = 14/100 * 770 = 107.8 J
Extension, x = 42 - 35 = 7cm to meters = 7/100 = 0.07 m
To find the spring constant, k;
The elastic potential energy of an object is given by the formula;
[tex] E.P.E = \frac {1}{2}kx^{2}[/tex]
Substituting into the equation, we have;
[tex] 107.8 = \frac {1}{2}*k*0.07^{2}[/tex]
[tex] 107.8 = \frac {1}{2}*k*0.0049 [/tex]
Cross-multiplying, we have;
[tex] 215.6 = k*0.0049 [/tex]
[tex] k = \frac {215.6}{0.0049} [/tex]
k = 44000 N/m
The spring constant of the tendon is 44000 N/m.
The following can be depicted from the question:
Elastic potential energy will be:
= 14% × 770J = 107.80 Joule.
The spring constant will be calculated thus:
107.8 = 1/2 × k × 0.07²
107.8 = 0.5 × k × 0.0049
k = 215.6 / 0.0049
k = 44000 N/m.
Therefore, the spring constant of the tendon is 44000 N/m.
Read related link on:
https://brainly.com/question/21163545
A car has a kinetic energy of 432,000 J when traveling at a speed of 23 m/s. What is its mass?
Answer:
2
Explanation:
2
A high diver steps off a diving platform that is 10 meters above the water if no air resistance is present during the fall there will be a decrease in the divers what?
Answer:
Potential energy.
Explanation:
Potential energy can be defined as an energy possessed by an object or body due to its position.
Mathematically, potential energy is given by the formula;
[tex] P.E = mgh[/tex]
Where,
P.E represents potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
In this scenario, a high diver steps off a diving platform that is 10 meters above the water, if no air resistance is present during the fall there will be a decrease in the driver's potential energy. This is simply because the potential energy of all physical objects is greatly or highly dependent on acceleration due to gravity.
Label the parts of the wave.
Answer:
A: Wavelength
B: Crest
C: Trough
D: Amplitude
Answer:
A:
✔ crest
B:
✔ amplitude
C:
✔ trough
D:
✔ wavelength
Explanation:
PLEASE HELP ME I AM TIMED!
Answer:
I would say the 3rd one
Explanation:
Write a one paragraph essay about the importance of the different biomolecules in our life.
Answer:
#tried my bestt
do mark me as brainlist
Biomolecules are made by living organisms and they are made because they are functional. Biomolecules, or at least most of them, do not exist outside of living organisms because they are too complex to be created by chance chemical collisions. The odds of a single average sized protein to form by chance has been calculated at 1 out 10 to the 77th power. Biomolecules REQUIRE intelligent agency to form them.
The four main purposes of biomolecules are:
1. Structure (some proteins)
2. Energy storage and release (carbohydrates)
3. Protective layers (lipids)
4. Information storage and communication (DNA, RNA, endocrines of numerous various types and manipulated molecules, such as fatty acids)
Which side of the electromagnetic spectrum has shorter wavelengths?
Which side of the electromagnetic spectrum has higher energy?)
Which side of the electromagnetic spectrum has higher frequencies?
Explanation:
hopefully this helps :)
What difficulties would arise due to lack of uniformity in measurement in different
countries? Write in brief.
Answer:
Many difficulties would arise if there was a lack of uniformity in the measurement of various weights and measures between business, industry, individuals and countries.
The biggest implications for a lack of uniformity are in health and safety, equity and sustainability.
Explanation:
https://alessandrorossini.org/we-can-put-an-end-to-imperial-units/
The African bush elephant weights over 8 tons, which is more than the weight of 4 cars! At maximum speed, it can run up to 40 km/h. How long does it take for an elephant running at top speed to go a distance of 10 kilometers?
Answer:
15 mins
Explanation:
Helppp please pleaseeee fr
The second paragraph of the article discusses how scientists monitored a crack in a rock face on a cliff. How did their findings help them assess the risk of falling rock?
Answer:
The scientists discovered that the crack expanded and contracted about 1 centimeter each day based on daily changes in temperature. They also discovered that the overall gap in the rock widened over the span of several summers and weakened the rock. The instability of this weakened rock might increase the risk of rock falls.
Explanation:
Same exact answer you might just want to change it up a little bit or copy and paste your welcome ! :) <3
RE-WRITTEN ANSWER: They recorded and looked at the amount the gap in the rocks expanded and reverted each day by 1 centimeter based on the differences in temperatures. The gap in the rock expanded greatly over the course of multiple summers and damaged the rock.
EXACT PLATO ANSWER: The scientists discovered that the crack expanded and contracted about 1 centimeter each day based on daily changes in temperature. They also discovered that the overall gap in the rock widened over the span of several summers and weakened the rock. The instability of this weakened rock might increase the risk of rock falls.
1. An elevator is moving up at a constant velocity of 2.5 m/s, as illustrated in the
diagram below: The passenger has a mass of 85 kg,
a. Construct a force diagram for the passenger
What are the most essential skills in Team Handball and why?
Answer:
The most important skill in handball is passing or throwing
Explanation:
You need to be able to pass the ball with accuracy. Throwing and shooting drills are normally incorporated into every training session for handball.
Answer:
Explanation:
The most important skill in handball is passing or throwing. You need to be able to pass the ball with accuracy. Throwing and shooting drills are normally incorporated into every training session for handball.
Which combination of elements below results in a metallic bond?
Answer:
there isn't anything else posted to the question when you ask a question put a picture or write it out so people can see it
Explanation:
Science project!!! For this assignment, you will ask questions about the factors that have caused a rise in global
temperatures over the past century. Then, you will conduct research to answer your questions. You will
also graph provided information, analyze the graphs, and make conclusions based on the graphs. Finally,
you will write a paper describing the conclusions of your research and graphs
My project is in the file attached, lots of thanks to Maxineishere for helping me with the essay. You may need adobe reader for this as the files are PDF files, I hope you are satisfied! :)
DATE ANSWERED: 5/8/2021
A 31 kg child is traveling at 4 m/s while sledding down a hill. What is the child's kinetic energy at the bottom of the hill?
Answer:
K.E = 248 J
Explanation:
Since the child is travelling at a given velocity. The kinetic energy of the child down the hill can be given by the following formula:
[tex]K.E = \frac{1}{2}mv^2\\[/tex]
where,
m = mass of the child = 31 kg
v = velocity of the child = 4 m/s
Therefore,
[tex]K.E = \frac{1}{2}(31\ kg)(4\ m/s)^2\\[/tex]
K.E = 248 J
Helppppp
A kangaroo has a maximum gravitational potential energy during one jump of 770 J
When the kangaroo lands on the ground 14% of the maximum gravitational potential energy is transferred to elastic potential energy in one tendon.The tendon has an unstretched length of 35.0 cm
When the kangaroo lands on the ground the tendon stretches to a length of 42.0 cm
Calculate the spring constant of the tendon.
[5 marks]
Show ur working out
Answer:
44000n/m
Explanation:
How much heat is required to change 200 mL of ice at -22°C (at typical Freezer temperature) into steam
Answer:
611.064 kJ
Explanation:
Given :
m = 200 mL = 200 g
Specific heat of ice = 2.06 J/g°C
Q = mcΔt
Δt = 0 - (-22) = 22
Q1 = 200 * 2.06 * 22 = 9064 J
Q2 = Melt 0 °C solid ice into 0 °C liquid water:
Q2 = m · ΔHf ; ΔHf = heat of fusion of water = 334j/g
Q2 = 200 * 334 = 66800 J
Q3 : Heat to convert from 0°C to 100°C
Q3 = mcΔt ; c = 4.19 J/g°C ; Δt = (100 - 0) = 100
Q3 = 200 * 4.19 * 100 = 83800 J
Q4: heat required to boil water to steam
Q = m · ΔHv
Hv = heat of vaporization of water = 2257 J/g
Q4 = 200 * 2257 = 451400 J
Total Q = Q1 + Q2 + Q3 + Q4
Q = 9064 + 66800 + 83800 + 451400
Q = 611,064 Joules
Q = 611.064 kJ
Calculate the distance of the end of a valley bearing in mind that the echo takes 0.7 seconds to be heard from the moment when the sound was produced.a
Answer:238m
Explanation:Distance = speed x time
Speed = 340 m/s
340 m/s x .07 s = 238m
A wave oscillates with a period of 4.25 X 10-10 s. How many waves will strike a signal detector in 3 seconds?
Answer:
[tex]n=7.05\times 10^9[/tex] waves
Explanation:
Given that,
A wave oscillates with a period of [tex]4.25\times 10^{-10}\ s[/tex]
We need to find the number of waves that will strike a signal detector in 3 seconds.
We know that,
Frequency = (no. of oscillations)/time
Time period = time/(no. of oscillations)
Let there are n waves that will strike
So,
[tex]n=\dfrac{3}{4.25\times 10^{-10}}\\\\=7.05\times 10^9[/tex]
Hence, [tex]7.05\times 10^9[/tex] waves will strike in 3 seconds.
the molecules in a solid state have _______ energy then molecules in a gas state
Answer:
less
Explanation:
hope this helps....................:)
If a balloon is charged with static electricity and you rip small pieces of tissue paper. Will it stick to the balloon?
Answer:
Yes
Explanation:
Rubbing a balloon with wool cloth will create static electricity charges. If you place small pieces of tissue paper near the balloon in Picture 2, they would probably stick to the balloon.
what type of wave travels through matter only??
A mechanical wave can only travel through matter.
Does the polarity of rocks in the Aragorn Sea suggest that the Sea is currently expanding? If so, explain? (ngl I am so confused by this question),
-and no links please, thank you
Answer:
55.7
Explanation:
A proton is moving in a circular orbit of radius 20 cm under a uniform magnetic field 0.3 t perpendicular to the velocity of the proton then the velocity of this pronto
Answer:
v = 5.75 x 10⁶ m/s
Explanation:
The radius (r) of the circular orbit taken by a charged particle is related to its speed perpendicular to a magnetic field of strength B, and is given by
r = [tex]\frac{mv}{qB}[/tex] --------------(i)
Where,
q = charge of the particle
m = mass of the particle
Making v subject of the formula in equation (i) above gives
v = [tex]\frac{qBr}{m}[/tex] -------------------(ii)
Given;
r = 20cm = 0.2m
B = 0.3T
v = unknown
q = charge of proton = 1.6 x 10⁻¹⁹ C
m = mass of the proton = 1.67 x 10⁻²⁷kg
Substitute the values of m, q, B and r into equation (ii) above to get;
v = [tex]\frac{1.6 * 10^{-19} * 0.3 * 0.2} {1.67*10^{-27} }[/tex]
Solving for v gives:
v = 5.75 x 10⁶ m/s
Therefore, the velocity of the proton is 5.75 x 10⁶ m/s
Why should a physical quantity be measured?
Answer:
It allows us to understand nature much more deeply than does qualitative description alone.
Explanation:
Without explaining the measurements, a quantity cannot always be measured.
Hope this helped, and please mark as Brainliest :)