Answer:
If both parents had a recessive allele for blue eyes and they had a brown phenotype it is completely possible for the child to have blue eyes.
Explanation:
Chromosomes play the role of transfering the encoded strands of DNA to the child. Genotypes are the traits or groups of traits transferred and need to carry the trait of blue eyes in order for the child to have them. As long as the parents had a recessive allele for blue eyes they could have a blue eyed child.
(apologies for the incomplete answer, I accidentally hit send)
19.5 J
10. A ball is traveling at 20 m/s and has a kinetic energy of 40 J. Calculate the mass of
the ball.
a) 8.6 kg
b) 0.2 kg
c) 34.6 kg
Answer: Sorry I don’t have time to give calculate it but I have a PowerPoint that could help.
Explanation: https://web.njit.edu/~gary/111/assets/HW8_sol.pdf
what is a underwater mountain that rises above sea level called
Answer:
Undersea mountain ranges are mountain ranges that are mostly or entirely underwater, and specifically under the surface of an ocean. If originated from current tectonic forces, they are often referred to as a mid-ocean ridge. In contrast, if formed by past above-water volcanism, they are known as a seamount chain.
Explanation:
The spring to launch a pinball in a pinball machine is compressed 25 cm and has a spring constant of 140 N/m.
a. How much energy is stored in the spring when it is fully compressed?
b. If friction removes 3.75 J of energy while the spring launches, how much energy will the pin ball end up having?
Answer:
I think it is 5.6. This is my answer
solute + solvent = ??
solute + solvent = a solution
I found a really good image for this situation:
Can someone please help me with science.
Answer:
I believe the answer it D
Explanation:
Four basic forces act on an airplane while in flight: lift, weight, drag, and thrust. These four forces and their directions are indicated below.
Complete question is;
Four basic forces act on an airplane while in flight: lift, weight, drag, and thrust. These four forces and their directions are indicated in the image attached.
If the thrust acting on an airplane is greater than the drag, then
A. The airplane will accelerate backward.
B. The lift will be greater then the weight.
C. The airplane will accelerate forward.
D. The weight will be greater than the lift
Answer:
C. The airplane will accelerate forward.
Explanation:
From the image attached, we can see that the thrust is the forward force responsible for pushing the plane forward while the drag is the one resisting this forward motion.
Thus, if the thrust is greater than the drag, it means the plane will accelerate forwards.
Thus, option C is correct.
What is the kinetic energy of a 4.0 kg cart that is moving at a speed of 0.50 m/s?
Explanation:
K.E = 1/2mv²
K.E = 1/2 x 4 x 0.5²
K.E = 0.5J
explain why fish survive under water when the surface is already frozen
Answer:
ice is a poor conductor of heat and less dense than water. During winter, ice floats and insulates the water under it. Below the frozen layer, the water remains in its liquid state and does not freeze. Also, oxygen is trapped beneath the layer of ice. This makes it possible for aquatic animals to survive during winter.
If the angle of reflection is 25 degrees, the angle of incidence is
Answer:
25 degrees
Explanation:
The angle of incidence equals the angle of reflection
A thin beam of light of wavelength 50 μm (in the infrared portion of the em spectrum) goes through
a thin slit and falls on a screen 3.00 m past the slit. You observe that the first completely dark fringes
occur on the screen at distances of ±8.24 mm from the central bright fringe, and that the central bright
fringe has an intensity of I0 at its center. (a) How wide is the slit? (b) What is the highest order fringe
this scenario is capable of producing? (c) What is the intensity of light at a point on the screen that is
one-quarter of the way from the central bright fringe to the first dark fringe?
Solution :
Given :
Wavelength of the thin beam of light, λ = 50 μm
Distance of the screen from the slit, D = 3.00 m
Width of the fringe, Δy = ±8.24 mm
Therefore, width of the slit is given by :
[tex]$d=\frac{n \lambda D}{\Delta y}$[/tex]
[tex]$=\frac{2 \times 50 \times 10^{-9} \times 3}{2 \times 8.24 \times 10^{-3}}$[/tex]
= 0.000018203 m
= 0.0182 mm
= 0.018 mm
The intensity of light is given by :
[tex]$I=I_0\left(\frac{\sin \beta /2}{\beta/ 2}\right)^2$[/tex] , where [tex]$\beta=\frac{2 \pi D \sin \theta}{\lambda}$[/tex]
[tex]$I=I_0\left(\frac{\sin \frac{\pi d \sin \theta}{\lambda}}{\frac{\pi d \sin \theta}{\lambda}}\right)^2$[/tex]
[tex]$I=I_0\left(\frac{\sin \frac{\pi d y}{D\lambda}}{\frac{\pi d y}{D\lambda}}\right)^2$[/tex]
Now, [tex]$\frac{dy}{D \lambda} = \frac{8.24 \times 10^{-3}\times 0.018 \times 10^{-3}}{4 \times 50\times 10^{-9}\times 4}$[/tex]
= 0.1854
≈ 0.18
[tex]$I=I_0\left(\frac{\sin 0.56}{0.56}\right)^2$[/tex]
[tex]$=I_0 \times 0.81$[/tex]
= 2 x0.81
[tex]$= 1.62 \ W/m^2$[/tex]
What is an element?
give ur own response
[tex]\huge{\textbf{\textsf{{\color{pink}{An}}{\blue{sw}}{\pink{er}} {\color{blue}{:}}}}}[/tex]
Elements are one type of atom.
Elements are complete chemical substances which relate to a single entry in the modern periodic table. Elements consist of one kind of atoms only.
Thanks Hope it helpsA 10 kg ball is falling on the planet Mars. Mars has an acceleration due to gravity of about 4 m/s/s. What is the force of gravity (or weight) of the ball on Mars?
A.6N
B.40N
C.0.4N
D.14N
Answer:
The force of gravity = 40 N
Explanation:
Given that,
The mass of a ball, m = 10 kg
The acceleration due to gravity on the surface of Mars, a = 4 m/s²
We need to find the force of gravity of the ball on Mars. The force of gravity on an object is given by :
F = mg
Substitute all the values,
F = 10 kg × 4 m/s²
F = 40 N
Hence, the correct option is (B).
A given wire of resistance 1 ohm
is stretched to double
its length. What will be its new resistance ?
The 1.5kg ball is launched straight upward with an initial velocity of 7m/s. What is the maximum height it will reach?
Answer:
h = 2.5 m
Explanation:
Given that,
Mass of a ball, m = 1.5 kg
Initial velocity of the ball, u = 7 m/s
We need to find the maximum height reached by the ball. Let it is be h. Using the conservation of energy to find it such that,
[tex]mgh=\dfrac{1}{2}mu^2\\\\h=\dfrac{u^2}{2g}[/tex]
Put all the values,
[tex]h=\dfrac{7^2}{2\times 9.8}\\\\=2.5\ m[/tex]
So, it will reach to a height of 2.5 m.
other quanto
Dalex when
the face
into that one dan
a Explains why fish can
Survive under
Horan
I'm not sure what you were trying to put here
An equipoterntial surface that surrounds a + 3.0 pC point charge has a radius of 2.0 cm. What is the potential of this surface?
Answer:
Electric potential = 0.00054 V
Explanation:
We are given;
Charge; q = 3 pC = 3 × 10^(-12) C
Radius; r = 2 cm = 0.02 m
Formula for the electric potential of this surface will be;
V = kqr
Where;
K is a constant = 9 × 10^(9) N⋅m²/C².
Thus;
V = 9 × 10^(9) × 3 × 10^(-12) × 0.02
V = 0.00054 V
any help would be appreciated! :)
Answer:
primary voltage/secondary voltage = number of turns on primary coil/number of turns on secondary coil
V1/V2= N1/N2
1.5/5 = 150/N2
0.3 = 150/N2
N2= 150/0.3
N2 = 500
Thanks for joining brainly community!
PLEASE ANSWER ASAP bbb
Answer:
if one bulb burns out the other bulbs will also turn off because they are connected to each other.
What was the first logical for the ways things moves in the solar system?
Answer:
depends the ancient humans or the start of the solar system
Explanation:
if its the humans the earth was in the middle of everything.
but the beginning of the solar system lets say when earth just formed the orbits where unstable and planet ending impacts happed a lot.
ill do the proto planetary disc too
the disc formed the gas giants first then the rockey planets formed out of the disc
If a species experiences a helpful mutation, like camouflage, explain how that mutation would help the species to better survive and flourish. Again, be sure to explain how and why that mutation would be helpful.
Help me please I need it fast, I’ll give b if correct!!!
Links = reported
Wrong answer= report (depends if it’s a whole different answer)
Answer:
A helpful mutation like camoflage would immensely help a species survive and flourish. The reason being the appliances of such a mutation. Camoflage is one of the most apllicable of abilities. It can be used as a defense mechanism, to hide in plain sight, it can be used offensively to avoid being seen while hunting and it can even be used as a form of communication between the species. All of these appliances would greatly benefit the species and would most definitely help it survive and flourish.
Which of the following is an example of potential energy?
A. The plant sitting on the desk
B. The airplane Flying in the air
C. The car driving on the Street
D. The person standing up
Answer:
A
Explanation:
potential energy is energy due to position
The Tennessee Valley Authority's coal-fired Kingston plant in Tennessee generates 10 billion kilowatt-hours a year by burning 13,000 metric tons of coal a day, supplying electricity to almost 700,000 homes. If all of the 7.7 billion metric tons of coal consumed worldwide in 2015 was converted to electricity, it would have produced approximately _____ billion kilowatt-hours of electricity. Assume the same efficiency as the Kingston plant.
Answer:
Approximately 16228 billion kilowatt-hours of electricity will be produced.
Explanation:
According to the statement, yearly energy production is directly proportional to amount of carbon to be burnt. Then, we proceed to estimate the yearly energy production from worldwide coal consumption ([tex]E[/tex]), in kilowatt-hours, by simple rule of three:
[tex]E = 10\times 10^{9}\,kWh\times \frac{7.7\times 10^{9}\,ton}{4.745\times 10^{6}\,ton}[/tex]
[tex]E = 16228\times 10^{9}\,kWh[/tex]
Approximately 16228 billion kilowatt-hours of electricity will be produced.
11. A car is pulled with a force of 10,000 N. The car's mass is 1267 kg. But, the car covers 394.6 m in 15 seconds.
(a) What is expected acceleration of the car from the 10,000 N force?
(b) What is the actual acceleration of the car from the observed data of x and t?
(c) What is the difference in accelerations?
(d) What force caused this difference in acceleration?
(e) What is the magnitude and direction of the force that caused the difference in acceleration?
Answer:
A) a = 7.89 m/s²
B) a = 3.51 m/s²
C) 4.38 m/s²
D) Frictional force
E) F_f = 5552.83 N
Explanation:
A) Formula for Force is;
F = ma
Where;
m is mass
a is acceleration
We are given;
F = 10,000 N
m = 1267 kg
Thus;
10000 = 1267a
a = 10000/1267
a = 7.89 m/s²
B) We are told the car covers 394.6 m in 15 seconds.
Using Newton's third equation equation of motion, we can find the actual acceleration.
s = ut + ½at²
u is zero since the object began from rest.
Thus;
S = ½at²
394.6 = ½ × a × 15²
a = 394.6 × 2/225
a = 3.51 m/s²
C) difference in accelerations = 7.89 - 3.51 = 4.38 m/s²
D) The force that caused the difference in acceleration is frictional force
E) To find the magnitude of the force that caused the difference in acceleration, we will use the formula;
F - F_f = ma
F_f = F - ma
Where F_f is the frictional force
Thus;
F_f = 10000 - 1267(3.51)
F_f = 5552.83 N
Can someone please help me with this
Answer:
B because the earth rotational axis tilt away from the sun.
what are the characteristics of a magnetic force
Answer:
Magnetic field lines never intersect each other.
They originates(from north pole) and terminates (to south pole) perpendicularly from/to the surface of magnet. Also magnetic field lines continues through the magnet.
Magnetic field is denser at the pole and becomes less dense as we move away from the poles.
Explanation:
pls help
Can humans start to direct their own evolution and take over natural selection? Are we influencing our own evolution?
Answer:
yes they can
Explanation:
sure if they want
It is very difficult to generate simple harmonic motion in a real world environment. Explain why this is the case.
I REALLY NEED HELP
Answer:
Simple harmonic motion is difficult to generate since real processes have irreversibilities, which are omitted in the physical model and represented by physical concept of damping.
Explanation:
It is very difficult to generate simple harmonic motion since real processes have irreversibilities that dissipy the mechanical energy within the system (e.g. air viscosity, friction), meaning that a permanent presence of an external load is needed to counteract such damping effects, in contrast with simple harmonic motion, where motion is self-sustained.
A student does an experiment with a string vibrating at 20 hertz and observes the resonance pattern shown in the
diagram:
What is the speed of the wave on the string in Figure 24-3A?
4.0 m/s
8.0 m/s
20 m/s
100 m/s
Answer:
v = 8.0 m/s
Explanation:
The diagram clearly shows that the string is vibrating in the 5th harmonic. Hence, the length of string in terms o wavelength can be given as:
[tex]L = \frac{5}{2}\lambda\\\\\lambda = \frac{2}{5} L[/tex]
where,
λ = wavelength = ?
L = Length of string = 1 m
Therefore,
[tex]\lambda = \frac{2}{5}(1\ m)\\\\\lambda = 0.4\ m[/tex]
Now, the speed of the wave can be given by the following formula:
[tex]v = f\lambda\\[/tex]
where,
v = speed of wave =?
f = frequency of wave = 20 Hz
Therefore,
[tex]v = (20\ Hz)(0.4\ m)\\v = 8\ m/s\\[/tex]
Hence, the correct answer is:
v = 8.0 m/s
Please help will mark brainliest
Why is the melting of ice a physical change?
A.
It changes the chemical composition of water.
B.
It does not change the chemical composition of water.
C.
It creates new chemical bonds.
D.
It forms new products.
E.
It is an irreversible change that forms new products.
Answer:
b
Explanation:
it melts yes but it's still water [same element] so there fore it's a physical change
Answer:
It does not change the chemical composition of water. Explanation: A physical reaction is defined as the reaction in which a change in shape, size takes place. No new substance gets formed in these reactions.
Explanation:
Hope this helped
Electromagnetic spectrum, i need help putting them in order. And maybe get a little help understanding this subject
Explanation:
In order from highest to lowest energies the parts of electromagnetic spectrum are named as
Gamma rays,
X-rays,
ultraviolet radiation,
visible light,
infrared radiation,
and radio waves.
Microwaves are a subsections of radio waves. They are used in microwave ovens to heat the food items.
This is expected EM spectrum in field of science.