Answer:
C) Turbines
Explanation:
C. because as the water flows, its kinetic energy is used to turn a turbine.
what is pressure and force
describe what happen as one complete sound wave move past a point?
Answer: The air is compressed after the sound wave passes. 4. The density of air increases and then decreases as the sound wave passes.
Explanation:
What type of solar eclipse occurs when the moon is in a higher orbit than the sun ?
Answer:
annular solar eclipse
Explanation:
An annular solar eclipse happens when the Moon covers the Sun's center, leaving the Sun's visible outer edges to form a "ring of fire" or annulus around the Moon. It happened because the apparent size of the Moon is smaller than that of the Sun
Answer:
annular solar eclipse
Explanation:
a solar eclipse happens when the moon covers the sun centre
1 point glitch if it works
you get half the points you answer a question, but what if i put it to 11, will both of you get 6 pts?
Answer:
lets see :)
Explanation:
Answer:
yes I think so. ..................
Suppose that a large mixing tank initially holds 300 liters of water in which 50 kg of salt have been dissolved. Another brine solution, with a concentration of 250 g/L, is pumped into the tank at a rate of 5 L/min, and the tank is also being emptied at a rate of 5 L/min. The fluid in the tank is being constantly stirred, and we can assume that, at any moment, the concentration is uniform throughout the tank. If A(t) represents the amount of salt (in kg) in the tank at time t, find a first-order differential equation for A(t), and write down the initial condition that goes with this equation.
Answer:
[tex]\therefore \quad \frac{d A}{d t}=6-\frac{2 A(t)}{300+t}[/tex]
Explanation:
[tex]\because \quad \frac{d A}{d t}=R_{i n}-R_{\text {out }}[/tex]
Thus, we find [tex]R_{i n}$ and $R_{\text {out first }}[/tex]
[tex]\because R_{i n}=( concentration of salt in inflow ) \cdot[/tex] (input rate of brine)
[tex]\therefore \quad R_{i n}=(2 \mathrm{lb} / \mathrm{gal}) \cdot(3 \mathrm{gal} / \mathrm{min})=6 \mathrm{lb} / \mathrm{min}[/tex]
Since the solution is pumped out at a slower rate, thus it is accumulating
at the rate of [tex](3-2)=1 \mathrm{gal} / \mathrm{min}[/tex]
Thus, after t minutes there will be [tex]300+t[/tex] gallons in tank
[tex]\because R_{\text {out }}=[/tex] (concentration of salt in outflow) \cdot (output rate of brine)
[tex]\therefore \quad R_{o u t}=\left(\frac{A(t)}{300+t} \mathrm{lb} / \mathrm{gal}\right) \cdot(2 \mathrm{gal} / \mathrm{min})=\frac{2 A(t)}{300+t} \mathrm{lb} / \mathrm{min}[/tex]
Now, we substitute by these results in the [tex]\mathrm{DE}[/tex] to get
[tex]\therefore \quad \frac{d A}{d t}=6-\frac{2 A(t)}{300+t}[/tex]
A child does 12 J of work pushing his 3 kg toy truck. With what velocity does the toy move after the child is done pushing
Answer:
2.82 V
Explanation:
v^2 = 2(12) / 3 is the formula
v^2 = 24 / 3
v^2 = 8, then you square v^2 and 8, to remove the ^2
and you got your answer! I believe this is correct, but let me know if it isn't.
Some people say you can tell if someone has HIV by looking at him or her. True or false? Why?
Answer:False.
Explanation: HIV is a viruse that only shows symptoms after a few weeks. in Fact HIV does not show any physical symptoms. So, no you can not tell if someone has or is been infected by HIV by directly looking at them.
Have a Nice Day!!! =)
Create a timeline: WHAT WOULD SOME EXAMPLES OF EACH PART BE??
Include at least the four major scientists covered in this unit: Oersted, Ampère, Faraday, and Tesla.
Include key contributions of each scientist and provide a year, if possible, for those contributions.
Note any relationships among these and other scientists, especially if one developed something based on the work of another.
Arrange the scientists chronologically by their first key contribution, not by their birth date.
Answer:
I tried and could not understand it sorry
Explanation:
What is created when a solute and solvent combine?
A.compound
B.element
C.solution
D.molecule
Answer:
a compound
Explanation:
a compound
hope this helps
Photon and quantum may be used interchangeably.
True
False
Answer:
true
Explanation:
1. Mass is 50 kg and velocity is 5 m/s.
Answer:
50*5=250KG*M/S
Explanation:
P=M*V
MOMENTUM FORMULA
If you get scared when swimming,panicking just makes you breathe faster and uses up more precious energy.
A. True
B.Flase
ANSWER ASAP
Q. What do you mean by the term radioactivity? Why some elements
are radioactive but some are not?
plz give me answer of each question in three lines
Answer:
breaking apart of atoms of certain elements to release rays of energy or particles.
Atoms are the building blocks of elements. However, some atoms have an excessive number of neutrons or protons in their nuclei. This causes an imbalance in the forces that keep them together, resulting in an excessive amount of internal energy. These atoms are referred to as radioactive or unstable.
hope this is helpful...
Why are infrared waves located between microwaves and visible light on the electromagnetic spectrum?
Answer: The infra red waves is located between microwave and visible light based on their WAVELENGTH and FREQUENCY of occurrence.
Explanation:
Electromagnetic waves are those waves that do not require or need a material medium for its propagation, but they are able to travel through a vacuum. They exhibit or show all properties associated or connected with light. They are undeflected in electric and magnetic fields. These electromagnetic waves are arranged in order of their FREQUENCY and WAVELENGTHS which is known as ELECTROMAGNETIC SPECTRUM.
FREQUENCY is defined as the number of cycles which the wave completes in one second and is measured in Hertz(Hz). While WAVELENGTH is defined as the distance between two successive crests or troughs of waves which is measured in meter (m).
The electromagnetic spectrum is made up of the following rays which is arranged from the biggest wavelengths to the smallest:
--> Radiowaves
--> microwave :
--> infrared rays:
--> visible light:
--> ultraviolet rays
--> x-rays and
--> Gamma rays.
According to the arrangement of the spectrum above, the microwave has a higher wavelength and frequency than the infrared rays, while the visible light has a lower wavelength and frequency than the infrared rays.
What kind of energy does an unlit match have?
a. thermal energy
b.chemical energy
c. kinetic energy
The type of energy that an unlit match has is potential energy.
What are the names of the days when day and night are of equal duration?
(No links, if you aren’t gonna answer here don’t answer at all.)
Which of the following statements are true about whether atoms tend to gain
or lose electrons?
A. Atoms with one, two, or three valence electrons will lose
electrons.
B. Atoms with five, six, or seven valence electrons will lose
electrons.
C. Atoms with four valence electrons will always gain electrons.
D. Atoms with eight valence electrons usually do not gain or lose
electrons.
Answer:
D. Atoms with eight valence electrons usually do not gain or lose
electrons.
Explanation:
An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.
Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.
Valence electrons can be defined as the number of electrons present in the outermost shell of an atom. Valence electrons are used to determine whether an atom or group of elements found in a periodic table can bond with others. Thus, this property is typically used to determine the chemical properties of elements.
Based on the octet rule which states that atoms of chemical elements gain, lose or share electrons so as to have eight (8) electrons in their valence shell. Therefore, atoms of chemical elements bond in order to attain the electronic configuration of a noble gas i.e a full valence shell which comprises of eight (8) electrons.
This ultimately implies that, atoms with eight valence electrons usually do not gain or lose electrons because they're noble gas.
which of the following are fire preventions guidelines
Answer:
there is no list of "the following" you might want to re-upload your question.
Calculen si a nivel del mar se reciben del sol 1000 watts por metro cuadrado y un panel solar genera 200 watts, ¿Cuál es la diferencias.?
Answer:
Diferencia de energía de las dos fuentes = 800 watts
Explanation:
Cantidad de energía recibida en el mar = 1000
Cantidad de energía solar recibida en el mar = 200
Diferencia de energía de las dos fuentes = 1000 -200 = 800 watts
what is the electric potential at a point in space if a charge of 7.3x 10^-17 coulombs at that point has a potential energy of 6.4
Answer:
V = 0.87 volt
Explanation:
Given that,
Charge, [tex]q=7.3\times 10^{-17}\ C[/tex]
Electric potential energy, [tex]U=6.4\times 10^{-17}\ J[/tex]
We need to find the value of electric potential at a point. The relation is as follows :
[tex]V=\dfrac{U}{q}[/tex]
Where
V is electric potential
So,
[tex]V=\dfrac{6.4\times 10^{-17}}{7.3\times 10^{-17}}\\\\V=0.87\ V[/tex]
So, the value of the electric potential at a point is equal to 0.87 Volts.
If there are 0.5 amps of current running through a circuit using a 9-volt battery, what is the resistance of the circuit?
Answer:
18
Explanation:
V = voltage
I = current
R = resistance
V = IR is the equation to find out the Voltage of an item so if we move around the equation so we are trying to resistance it would become R = V/I.
V = IR
R = V/I
R = 9/0.5
R = 18
Which direction will the object move?
Answer: it will move to the left
Explanation: i remeber doing this
Question 13 (1 point)
(02.08 LC)
To follow appropriate safety procedures, what should nighttime runners wear? (1 point)
Оа
Knee pads
Ob
Reflective clothing
Sunglasses
Od
Tank tops
Answer:
Reflective clothing. So vehicles can see them and stuff.
HELP PLEASE ASAP !!!!Question 5 of 15
Lead-196 has a half-life of 37 minutes. It decays into thallium-196. Suppose a
sample contains 20 atoms of lead-196 and 60 atoms of thallium-196. About
how old is the sample?
A. 74 minutes
O B. 37 minutes
O c. 111 minutes
O D. 148 minutes
Answer: A. 74 Minutes
Explanation: A P E X
a car travels for 3 hours it travels 30 mi in the first hour 45 miles in the second hour and 75 mi in the third hour what is the car's average speed for the entire trip
Answer:
Average speed = 50 mph
Explanation:
Average speed = (30 miles + 45 miles + 75 miles)/3 hours = 50 mph
A car sets off from the traffic lights. It reaches a speed of 27 m/s in 18 seconds. What is its acceleration?
Answer:
1.6875m/s²
Explanation:
[tex] acceleration = \frac{final \: velocity \: - \: initial \: velocity}{time \: taken} [/tex]
a = unknown.
v (final velocity) = 27m/s
u (initial velocity) = 0m/s (as the car was stationary in the traffic lights).
t (time taken) = 18s
[tex]a = \frac{27 - 0}{16} [/tex]
acceleration = 1.6875m/s²
hope it helps. :)
please help !!! HELP
In the decay shown by this equation what shows that transmits transmutation has taken place?
A) atomic identity stays the same but the total number of protons and neutrons change
B) The element represented by the parent and daughter nuclei are the same
C) atomic identity change it but the total number of protons and neutrons do not
D) The total number of Nucleon changes between the parent and a daughter nuclei
Answer:
The answer is C
I just took the quiz
The statement (C) atomic identity changes but the total number of protons and neutrons do not is correct.
What is transmutation?The addition or deletion of protons to a nucleus is referred to as transmutation. A transmutation occurs when deuterium is converted to helium.
We have a decay equation shown below:
[tex]\rm _{11}^{6}\textrm{C} \rightarrow_{11}^{5}\textrm{B}+_{0}^{+1}\textrm{e}[/tex]
As the one-electron subtraction occurred and atom C becomes atom B so the decay equation is affected by atomic identity, but not by the total number of protons and neutrons.
Thus, the statement (C) atomic identity changes but the total number of protons and neutrons do not is correct.
Learn more about the transmutation here:
https://brainly.com/question/11545568
#SPJ2
What are 5 different ways to use a fidget spinner?
Answer:
Balancing on one finger.
Tossing between hands.
Using a different body part.
Building a tower.
Throwing it high in the air.
Flipping it over.
Switching between fingers.
Going behind the back.
Explanation:
Just stuff I used to do ^^
The total mechanical energy of a basketball is 450 J. If the kinetic energy is 226 J, what must the potential energy be?
Answer:
224 J
Explanation:
The total energy is equal to 450 J and the kinetic energy is equal to 226 J so to find the potential energy you simply subtract the two numbers
The principle of inertia tells us that a rock sitting on a flat driveway will only move if a force is applied to it. True False
Answer:
True
Explanation:
Because that's what the law of inertia does