Answer:
Explanation:
A analog signal requires more energy but i don’t know what digital is please let me know if you found the answer
Can we have the Doppler effect with light waves? How?
Answer:
Besides sound and radio waves, the Doppler effect also affects the light emitted by other bodies in space. If a body in space is "blue shifted," its light waves are compacted and it is coming towards us. If it is "red shifted" the light waves are spread apart, and it is traveling away from us.
Explanation:
Lisette decided to take this game more seriously and put both hands on the rope, applying a 150 N force to the left. Alexis still struggled with her 100 N force to the right.
Answer:
orce or acceleration b. Ms. Sunderland finally decided to take this seriously and put both hands on the rope and applied a 1000 N force to the left, while Jared and James still struggled with their 300 N force to the right. What is ... 150 more force. 10. During 5th period Dylan resisted the forces applied by her classmates in a ...
Explanation:
How much is the velocity of a body
when it travels 6oo meter in 5 minute ?
Answer:
velocity=2m/s
I hope it's helps you
Answer:
Its average speed, pretending that it traveled at a constant speed, is
v = s / t
= 600 m
5 x 60 s
= 2 m/s
Hope it help...
Havea great day
a wave has a period of 2.0 s. what is its frequency?
Answer: Frequency of 1 ÷ 2 = 0.5 Hz.
Solve for x and y algebraically:
x + y = 8 and 3x + 2y = 21
Explanation:
ans ...(5,3)..............
Answer:
x = 5
y = 3
Explanation:
x + y = 8 and 3x + 2y = 21
Here We use Substitution Method
x + y = 8 ...(1)
3x + 2y = 21 ...(2)
From equation (1) we get
x + y = 8
x = 8 - y
Now the value of x = 8 - y in equation (2)
3(8 - y) + 2y = 21
24 - 3y + 2y = 21
- y = 21 - 24
y = 3
Then Put the value of y in equation (1)
x + (3) = 8
x + 3 = 8
x = 8 - 3
x = 5
Thus The value of x is 5 and y is 3
For Verification Only:x + y = 8
5 + 3 = 8
8 = 8
3x + 2y = 21
3(5) + 2(3) = 21
15 + 6 = 21
21 = 21
L.H.S = R.H.S
-TheUnknownScientist
_____ is not a unit of pressure. *
A) armstrong
B) atmosphere
C) millimeter of mercury
D) Pascal
Answer:
A) Armstrong is not a unit of pressure. In fact, I don't think it's even a unit at all, an "Amstrong" is a unit of length, if that's what you meant.
Atmospheres, Millimeters of mercury, and Pascals are all units of pressure.
Let me know if this helps!
Help someone :(((((((((((((((
AND THIS ONE PLEASE PLEASE PLEASE
Answer:
The answer is D
What type of galaxy is pictured?
•elliptical
•irregular
•lens
•spiral
If 550 J of work is done to pull a box horizontally across the floor 4.6m, what is the force of friction between the box and floor?
The work done is the product of the force and resulted displacement. The frictional force between the box and floor is 119.5 N.
What is force?Force is external factor acting on a body to make a change in the state of an object . According to Newton's second law of motion, force is the product of mass and acceleration.
The work done in physics is the product of force acting on a body and its displacement. Therefore, the force which result in a displacement of the body is said to be work done on the object.
Here, the work done by frictional force is 550 J and displacement is 4.6 m.
Therefore, the force = work done / displacement
= 550 J/ 4.6 m
= 119.5 N.
Hence, the force between the floor and box will be 119.5 N.
To find more on frictional force, refer here:
https://brainly.com/question/1714662
#SPJ2
what happens if one part of the body breaks down
Answer:
all the body parts work together to make your body function properly, so therefore, a lot of other body parts will break down
An insulator________the loss of heat energy.
A.)speeds up
B.)slows down
which one is it?
Answer:
A) speed up
is the correct option
Answer:
slows down
Explanation:
As the temperature difference decreases the rate of transfer slows (hope this helps)
What is the molarity (concentration) of 25.2 grams of NaF dissolved in a total volume of 0.75 liters?
Answer: concentration c = 25.2 g /(41.99 g/mol × 0.75 l)
Explanation: M(NaF) = 41.99 g/mol and amount of substance n = m/M.
Concentration c = n/V
What is the molarity (concentration) of 25.2 grams of NaF dissolved in a total volume of 0.75 liters is 0.8 mol/liter.
What is Molarity ?
Molarity shows the concentration of solute in the given solution. It is defined as no. of moles of solute present in 1 liter of solution. It is denoted by M. its SI unit is mol/L.
Hence, molarity is given by,
Molarity = No. of moles of solute ÷ Volume of the solution in liters
Given,
mass of NaF = 25.2 g
Volume of the solution = 0.75 liters
Molarity = ?
Let's find No. of moles of the solute.
NaF has one Na and one F.
Molar mass of NaF is,
Na = 22.98*1 = 22.98
F = 18.99*1 = 18.99
Molar mass of NaF is 22.98+18.99= 41.97 g/mol
No. of moles of the solute is,
25.2g of NaF × (1÷41.97 ) mol/g = 0.6 mol.
Molarity of NaF is,
Molarity = No. of moles of solute ÷ Volume of the solution in liters
M = 0.6 mol ÷ 0.75 liters
M = 0.8 mol/liter
Hence molarity of NaF is 0.8 mol/liter.
To know more about molarity, click :
https://brainly.com/question/2817451
#SPJ3.
An object moving at 40 m/s takes 10 s to come to a stop. What is the object’s acceleration?
Answer:
-4 m/s^2
Explanation:
v=vo+at
0=40+a(10)
-40=a(10)
-4=a
Question
On a circular race track with a radius of 3.23 km, a
certain road car set a speed record of 372 km/h.
Complete Question:
On a circular race track with a radius of 3.23 km, a certain road car set a speed record of 372 km/h. What was the car's centripetal acceleration?
Answer:
Centripetal acceleration = 3.306 m/s²
Explanation:
Given the following data;
Radius, r = 3.23 km to meters = 3.23 * 1000 = 3230 m
Velocity = 372 km/h to meters per seconds = 372*1000/3600 = 103.33 m/s
To find the centripetal acceleration;
Centripetal acceleration = velocity²/radius
Centripetal acceleration = 103.33²/3230
Centripetal acceleration = 10677.09/3230
Centripetal acceleration = 3.306 m/s²
What speed would an object have to travel to increase its mass by 50%?
Answer:
the point the mass of an object will increase when traveling at relativistic speeds
Explanation:
m = m0/((1 - v2/c2))1/2
m0 = the mass measured at rest relative
m = the mass measured by the observers on the other reference frame.
v = the speed of the object
c = the speed of light in a vacuum
The speed of a wave in a medium is effected by____,____, and____
[tex]\huge\mathfrak\green{answer}[/tex]
As per as my knowledge
The speed of a wave in a medium is affected by density, wavelength and temperature :)
(Good luck on your test and mark me brainliest if this helps)
Help !!
You are using sonar over a spot in the ocean known to be 91.8 m deep. The system emits a 50.0-kHz pulse into the water. It takes 120.0 ms for the sound to travel to the ocean floor and back to the sonar system. Determine the speed of sound in the ocean and the wavelength of the sonar pulse.
Answer:
a. Speed = 765 m/s
b. Wavelength = 0.0153 m
Explanation:
Given the following data;
Distance = 91.8m
Time = 120 milliseconds to seconds = 120/1000 = 0.12 seconds
Frequency = 50KHz = 50 * 10³ = 50000 Hz
a. To find the speed of sound in the ocean:
Speed = distance/time
Speed = 91.8/0.12
Speed = 765 m/s
b. To find the wavelength;
Wavelength = speed/frequency
Wavelength = 765/50000
Wavelength = 0.0153 m
An object of mass 4.0 kg is dropped from a height of
1000 m from a helicopter. The air resistance acting
against the parachute exerts a steady upward force of 35 N. Calculate the kinetic energy of the object when it reaches the ground and hence find its velocity.
anyone know how to do this ?
I will give BRAINLIEST.... ln the diagram below the system is in equilibrium. Determine the value of F1 in Newton
Answer:
35N
Explanation:
if its balanced both sides would have equal forces. Left side is 35N and right side is 70N. 70-35=35N
brainliest
What is happening to the water molecules as it changes from ice to liquid water? *
They are losing energy, can’t move only vibrate
They are gaining energy, can move and slide past each other
They are moving at high speeds and are far from each other
They are gaining energy, moving slowly until they evaporate
Answer:
They are gaining energy, can move and slide past each other.
Explanation:
Because as ice melts, the molocules gain energy/heat which warm them up and are able to slide/move apart from each other.
ANSWER AND I WILL GIVE YOU POINTS
You exert 500 N down on the earth as you jump into the air. How much force does the earth exert back on you?
Answer:
500 Newton itself
Explanation:
Newton's third law of motion
what force was applied to an object if 35 J of work was done and the object moved 7m ?
Objects 1 and 2 attract each other with a gravitational force of 36.0 units. If the distance separating Objects 1 and 2 is changed to one-third the original value, then the new gravitational force will be units.
Answer:
324 units
Explanation:
Given that,
Objects 1 and 2 attract each other with a gravitational force of 36.0 units.
The distance separating Objects 1 and 2 is changed to one-third the original value.
Let the new force be F' and r'=r/3. so,
[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]
[tex]F'=\dfrac{kq_1q_2}{r'^2}\\\\F'=\dfrac{kq_1q_2}{(\dfrac{r}{3})^2}\\\\=9\times \dfrac{kq_1q_2}{r^2}\\\\=9F\\\\=9\times 36\\\\=324\ \text{units}[/tex]
So, the new force become 324 units.
Driving your Ferrari through the Italian countryside at a speedy 88 m/s, you approach an opera diva singing a high C (1,046 Hz). What note will you actually hear as you approach? (Assume a speed of sound of 340 m/s.)
Answer:
You will hear the note E₆
Explanation:
We know that:
Your speed = 88m/s
Original frequency = 1,046 Hz
Sound speed = 340 m/s
The Doppler effect says that:
[tex]f' = \frac{v \pm v0 }{v \mp vs}*f[/tex]
Where:
f = original frequency
f' = new frequency
v = velocity of the sound wave
v0 = your velocity
vs = velocity of the source, in this case, the source is the diva, we assume that she does not move, so vs = 0.
Replacing the values that we know in the equation we have:
[tex]f' = \frac{340 m/s + 88m/s}{340 m/s} *1,046 Hz = 1,316.73 Hz[/tex]
This frequency is close to the note E₆ (1,318.5 Hz)
A machine does 1200 J of work in 1 min. What is the power developed
by the machine? (Power = Work/time) in Watts OR Joules/second
Answer:
20 watts
Explanation:
Big brain mode activated:
Power=1200J/60sec
Power=20 watts
If a constant fotce of 490 newtons is applied to an object and it proceeds to accelerate in the opposjte direction at 9.8 meters per second, every second, what is its mass?
Answer:
50 kg
Explanation:
f=ma
Force = mass x acceleration
490 = 9.8 x m
m = 50 kg
true or false if false correct the false statements :
a- the transformation of electric energy into themal energy is called joule's effect.
b - when a liquid is at rest , the pressure is at the same at any point within this liquid
Answer:
both statements are truth
Explanation:
a-The Joule effect, also called Joule's law, is the thermal manifestation of electrical resistance. ... In all these cases, it is intended to generate thermal energy with electricity passing through its conductors. This heat they give off is due to the Joule effect.
b-sure of a liquid tank depends only on the density of the liquid and depth from the free surface. It is a scalar quantity and is same in all directions, at a point.
which element has the highest atomic number,oxygen or aluminum
Answer:
Aluminum has the highest atomic number