the person's phenotype would be red hair. phenotype is what you see on the outside, genotype is what the dna says. <3
which feature is used to classify galaxies
age
color
shape
size
Answer:Shape
I took the quiz
Answer:shape
Explanation:
I took the quiz
What is the baseball's mechanical energy when it is at a height of 8.0 m? Explain.
Answer:
In this section, we elaborate and extend the result we derived in Potential Energy of a System, where we re-wrote the work-energy theorem in terms of the change in the kinetic and potential energies of a particle. This will lead us to a discussion of the important principle of the conservation of mechanical energy. As you continue to examine other topics in physics, in later chapters of this book, you will see how this conservation law is generalized to encompass other types of energy and energy transfers. The last section of this chapter provides a preview.
The terms ‘conserved quantity’ and ‘conservation law’ have specific, scientific meanings in physics, which are different from the everyday meanings associated with the use of these words. (The same comment is also true about the scientific and everyday uses of the word ‘work.’) In everyday usage, you could conserve water by not using it, or by using less of it, or by re-using it. Water is composed of molecules consisting of two atoms of hydrogen and one of oxygen. Bring these atoms together to form a molecule and you create water; dissociate the atoms in such a molecule and you destroy water. However, in scientific usage, a conserved quantity for a system stays constant, changes by a definite amount that is transferred to other systems, and/or is converted into other forms of that quantity. A conserved quantity, in the scientific sense, can be transformed, but not strictly created or destroyed. Thus, there is no physical law of conservation of water.
Systems with a Single Particle or Object
We first consider a system with a single particle or object. Returning to our development of (Figure), recall that we first separated all the forces acting on a particle into conservative and non-conservative types, and wrote the work done by each type of force as a separate term in the work-energy theorem. We then replaced the work done by the conservative forces by the change in the potential energy of the particle, combining it with the change in the particle’s kinetic energy to get (Figure). Now, we write this equation without the middle step and define the sum of the kinetic and potential energies, K+U=E; to be the mechanical energy of the particle
3. A 40-gram ball of clay is dropped from a height, h, above a cup which is attached to a spring of spring force constant, k, of 25 N/m. The ball lands in the cup, and the spring compresses a distance, x. If x is 0.506 m, then what is the maximum speed of the ball?
Answer:
the maximum speed of the ball is 12.65 m/s
Explanation:
Given;
mass of the ball, m = 40 g = 0.04 kg
spring constant, k = 25 N/m
Apply the principle of conservation of energy;
The Elastic potential energy of the spring will be converted into Kinetic of the ball;
[tex]\frac{1}{2} kx^2 = \frac{1}{2} mv^2\\\\ kx^2 = mv^2\\\\v^2 = \frac{kx^2}{m} \\\\v = \sqrt{\frac{kx^2}{m}} \\\\v = \sqrt{\frac{(25)(0.506)^2}{0.04}} \\\\v = \sqrt{160.0225} \\\\v = 12.65 \ m/s[/tex]
Therefore, the maximum speed of the ball is 12.65 m/s
help yo if u can answer quicly
Answer:
maybe c
I think its c
hope it helped
what forms of energy best describes the energy stored in food
Answer:
probably potentially energy
Explanation:
hopefully this helps
Cuantos CM son 8 newtons
Answer: Be more specific
Answer:
uno thos threse u here me
Explanation:
Elements in Group
are common alkaline earth metals.
Answer here
compare and contrast current and static electricity plz help.
Static
Type of electron movement: random
path of electrons: unpredictable
duration flow: short
usefulness: stattionery objects
Current
Type of electron movement: steady in a given direction
Path of electrons: can be directed
Duration of flow: long
Usefulness: can power appliances
Note: This is a few notes I know about it sorry if its not what you are looking for This is all the info I have
Describe the general relationship between the weight of adult men and the average number of Calories needed daily to maintain a steady weight.
Answer:
The average number of calories needed daily represents the average quantity of calories eliminated by human body due to metabolism and must be compensated by eating and drinking.
The amount of calories contained in the food we eat every day must represent the amount of calories eliminated by the body in that time to have a steady weight.
Explanation:
The average number of calories needed daily represents the average quantity of calories eliminated by human body due to metabolism and must be compensated by eating and drinking. If total quantity of calories in the food we consume every day is higher that the average number of calories needed daily, then weight increases by fat accumulation.
The
is the particle in the nucleus with a positive charge.
Answer here
HELP!!!!!!!!!
A toy car has a motor capable of moving the car at 10m/s up a 35 degree ramp. If the motor exerts a force of 500N to the car, what is the power rating of the motor in kW?
Answer:
4.096 kW
Explanation:
Applying,
P = Fvcos∅................. Equation 1
Where P = Power of the motor, F = Force exerted on the motor, v = Velocity, ∅ = angle.
From the question,
Given: F = 500 N, v = 10 m/s, ∅ = 35°
Substitute these values into equation 1
P = 500×10×cos35°
P = 4095.8 W
P = 4.096 kW
Hence the power rating of the moto in kW is 4.096 kW
What causes mechanical wave motion
Answer:
A disturbance or vibration in matter
Explanation:
Answer:
A mechanical wave is a distance in matter that transfer energy through the matter. A mechanical wave starts when matter is disturbed. A source of energy is needed to disturb matter and start a mechanical wave.
Energy can enter and exit which of the following systems?
A. Both open and close
B. Both open and isolated
C. Open Only
C. Isolated only
Answer:
A. Both open and close
Explanation:
just took the test
A wave with a frequency of 1.1 Hz travels through deep water at a speed of 5.7 m/s. When the wave enters shallow water, its speed slows to 3.2 m/s. What is the wavelength of the wave in the shallow water?
Answer:
The wavelength of the wave in shallow water is 2.91 m.
Explanation:
Given;
frequency of the wave, f = 1.1 Hz
speed of the wave in deep water, v₁ = 5.7 m/s
speed of the wave in shallow water, v₂ = 3.2 m/s
The wavelength of the wave in the deep water is calculated as;
λ₁ = v₁/f
λ₁ = 5.7 / 1.1
λ₁ = 5.18 m
The wavelength of the wave in the shallow water is calculated as;
λ₂ = v₂/f
λ₂ = 3.2 / 1.1
λ₂ = 2.91 m
Therefore, the wavelength of the wave in shallow water is 2.91 m.
(Ecology) Food Chain lab Gizmo:
Before you interact with the simulation, what are your expecations? How will the food chain be effected if one organisim's population is altered? In your response, select one organisim (grass, rabbit, snake, hawk) and give a 3 sentence response on how you think a change in population of this organisim will impact the rest of the food chain.
Answer:
If the population of rabbits was altered then the food chain would be affected because if the population decreased then the animals that prey on rabbits wouldn't have as much food as they used to so the predators of the rabbits would decrease. If the population increased then the animals that prey on rabbits would increase. Overall, if rabbits had a change in population then the food chain would become effected, because if rabbits decrease then their predators decrease in population as well, the same goes for an increase in population.
(hope this helped!)
I really need help
John's mass is 55kg when he is standing on the edge of a diving
board 24m high. a. Find his mechanical energy.
What is it?
Answer:
E = 12.9 kJ
Explanation:
Given that,
Mass of John, m = 55 kg
It is standing on the edge of a diving board which is at a height of 24 m.
We need to find his mechanical energy. The mechanical energy of John is equal to its potential energy such that,
E = mgh
E = 55 kg × 9.8 m/s² × 24
E = 12936 J
or
E = 12.9 kJ
So, his mechanical energy is equal to 12.9 kJ.
How does space exploration affect the economy of Florida?
A) Since rockets launched from Florida are paid for by the federal government, there is a positive effect on Florida's economy.
B) Since rockets launched from Florida pull tourists away from Disney World and local beaches, there is a negative effect on Florida's economy.
C) Since rockets launched from Florida must be purchased from companies located outside of Florida, there is a negative effect on Florida's economy.
D) Since rockets launched from Florida require hundreds of scientists and engineers to move to the area, there is a positive effect on Florida's economy.
Answer:
How does space exploration affect the economy of Florida?
A) Since rockets launched from Florida are paid for by the federal government, there is a positive effect on Florida's economy.
which type of star cluster forms from tightly packed groups or older stars ?
binary
eclipse
globular
open
Globular star clusters form from tightly packed groups and/or older ancient stars.
What are globular star clusters?Globular star clusters can be defined as ancient stars packed in a spherical and/or symmetrical shape.
Globular star clusters represent the most common types of groups (i.e., clusters) of ancient stars.
These groups of stars (globular) are characterized to be densest in the center of the cluster.
In conclusion, globular star clusters form from tightly packed groups and/or older ancient stars.
Learn more about globular star clusters here:
https://brainly.com/question/21379923
Two trucks have the same mass. Which truck will have a greater amount of kinetic energy? b. The truck with less mass d. The trucks will have the same kinetic energy c. The truck with greater speed a. The truck with more mass
Answer:
c. The truck with greater speed
Explanation:
Energy can be defined as the ability (capacity) to do work. The two (2) main types of energy are;
a. Gravitational potential energy (GPE): it is an energy possessed by an object or body due to its position above the earth.
b. Kinetic energy (KE): it is an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
[tex] K.E = \frac{1}{2}MV^{2}[/tex]
Where;
K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents speed or velocity measured in metres per seconds square.
From the above formula, we can deduce that the kinetic energy of an object is directly proportional to the square of the value of its velocity or speed.
Hence, the truck with greater speed would have a greater amount of kinetic energy.
Answer:
The trucks will have the same kinetic energy.
Explanation:
Both of the trucks have the same mass, so they have the same kinetic energy. Hope this helps!
this is known as the -------of light.
Answer:
rectilinear propagation of light
reflection of light
refraction of light
Uranium-235 decays to thorium-231 with a half-life of 700 million years. When a rock was formed, it contained 6400 million uranium-235 nuclei and no thorium-231 nuclei. Show that after 2100 million years there are seven times more thorium nuclei than uranium nuclei in the rock.
Answer:
proof in explanation
Explanation:
First, we will calculate the number of half-lives:
[tex]n = \frac{t}{t_{1/2}}[/tex]
where,
n = no. of half-lives = ?
t = total time passed = 2100 million years
[tex]t_{1/2}[/tex] = half-life = 700 million years
Therefore,
[tex]n = \frac{2100\ million\ years}{700\ million\ years}\\\\n = 3[/tex]
Now, we will calculate the number of uranium nuclei left ([tex]n_u[/tex]):
[tex]n_u = \frac{1}{2^{n} }(total\ nuclei)\\\\n_u = \frac{1}{2^{3} }(6400\ million)\\\\n_u = \frac{1}{8}(6400\ million)\\\\n_u = 800\ million[/tex]
and the rest of the uranium nuclei will become thorium nuclei ([tex]u_{th}[/tex])
[tex]n_{th} = total\ nuclei - n_u\\n_{th} = 6400\ million-800\ million\\n_{th} = 5600\ million[/tex]
dividing both:
[tex]\frac{n_{th}}{n_u}=\frac{5600\ million}{800\ million} \\\\n_{th} = 7n_u[/tex]
Hence, it is proven that after 2100 million years there are seven times more thorium nuclei than uranium nuclei in the rock.
A body is thrown up with with velocity u.it reaches maximum height h. If velocity of projection is doubled the maximum height is..
Answer: 4h
Explanation:
Given
The body is thrown vertically upward with velocity u and reaches a height of h
The relation between u and h is given by
[tex]\Rightarrow v^2-u^2=2as\\[/tex]
Put [tex]v=0,a=-g[/tex] in above equation
[tex]\Rightarrow 0-u^2=2(-g)h\\\\\Rightarrow h=\dfrac{u^2}{2g}[/tex]
If the velocity of projection is doubled i.e. 2u
[tex]\Rightarrow h'=\dfrac{(2u)^2}{2g}\\\Rightarrow h'=4\times \dfrac{u^2}{2g}\\\\\Rightarrow h'=4h[/tex]
The maximum height becomes 4h
Brad is swimming in the ocean on a hot sunny day. He finds the water to be much colder than the sand on the beach, even though the sun is warning them both. Identify the reasons for brads observation
Answer:
When Brad was swimming in the ocean and then he observed that the sand was more hotter than the water of the ocean. The water is colder than the sand because the water needs more energy as compared to sand to change its temperature. This is because the water has a higher specific heat than sand.
Explanation:
I am pushing on a large box with 200N of force. Clint is pushing on the box with 200N of force in the opposite direction. Why won't the box move?
All of the visible color light waves together result in____light
Answer:
White light.
Explanation:
How might variation in the color of beetles help them survive ?
Answer:
they can blend in with their suroundings
Explanation:
A planet orbits a sun in a clockwise elliptical orbit as shown in the diagram below
Bubble in the letter representing the position or choose e if it is constant
At which position does the planet have the greatest gravitational energy?
Answer:
Greatest gravitational energy is at "C".
The planet has to do work "against" the field to get to "C".
Also, if m v R (angular momentum) is constant then as R increases v must decrease for this term to be constant and KE = 1/2 M v^2 must decrease also to get to point C.
which instrument determine the purity of milk
Answer:
Milk Lactometer
Milk Lactometer: A lactometer is an instrument that is used to check for the purity of milk by measuring its density.
lactometer is used to determine the purity of milk
hope it is helpful to you
consider the circuit. find the equivalent resistance
Answer: 18 5.0 012
Explanation:
what is matter explain