Answer:
The velocity of the observer is 6.8 m/s
Explanation:
Doppler effect equation is given by the formula:
[tex]f'=\frac{v+v_o}{v-v_s} f\\\\where\ f'\ is \ the\ observed \ frequency=15300\ Hz,v_o\ is\ the\ velocity\ of\ the\ observer,\\v_s\ is\ the\ velocity\ of \ source=0,v\ is\ the\ velocity\ of\ sound=340\ m/s\ and\ f\ is\ actual\\frequency=15000\ Hz.\\\\substituting:\\\\15300=15000(\frac{340+v_o}{340} )\\\\340+v_o=346.8\\\\v_o=6.8\ m/s[/tex]The velocity of the observer is 6.8 m/s
is doc mcstuffins the best
pretty cool not gonna lie
A toy car of mass 1kg moves at 2 m/s. If a 3N force is applied for 1.9 seconds. What is the cars final velocity? Answer to 1 decimal. Help fast please. I'll mark brainliest :)
Answer:
7.7 m/s
Explanation:
Initial speed=2 m/s
mv=Ft
1*v=3*1.9
v=5.7 m/s
5.7+2=7.7
on
Draw
3. The weight of a body varies from location to location. Where would the weight of the
body be least
On the moon
At sea level on earth
On top of Mount Everest
In space
4. We meet many different types of force every day. Some of these are shown in the list
below. However, one of these is NOT a force. Which one is it?
A
Speed
B
Push
C
Pull
Friction
Answer:
it's C a pull friction
Explanation:
because it's all said in the explained
This type of soil is found in warm, humid climates. Question 4 options: pedocal laterite pedalfer humus
Answer:
Laterite is your correct answer
Explanation:
Well i took the quiz and made a %100 meaning i am correct.
The laterite soil is found in warm, humid climates
What are Laterite soil?A variety of rocks weathered under highly oxidising and leaching circumstances to form laterite soil, which is present in the soil layer and is rich in iron oxide.
Given data ,
Let the soil be represented as A
Now , the soil is found in warm, humid climates
The laterite soil is is rich in iron and aluminium, are assumed to have developed in hot, humid tropical climes. Because to the substantial concentration of iron oxide, nearly all laterites have a rusty-red colour.
They develop as a result of prolonged, intensive erosion of the underlying rock material, which most frequently takes place during periods of high temperatures and heavy precipitation that alternate with periods of dry weather.
Hence , Laterite is the type of soil is found in warm, humid climates.
To learn more about laterite soils click :
https://brainly.com/question/10986021
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1. If you add air to a flat tire through a single small entry hole, why does the air spread out to fill the tire?
Answer:
The tire fills up just like anything else that holds air when u pump a ball or tire up it fills all the way up cause it is a small confined space and after filling it with air the atoms of the air fill the tire up
Explanation:
If a motor is rated at 5.6KW, work done in 20minutes is equal to:
Answer:
given Power= 5.6×1000=5600watt
t=20min=20×60=1200sec. work done=?
P=w/t
w=pt=5600×1200=672×10^4Joule
The amount of work done by the motor is equal to 6.72 Megajoules.
Given the following data:
Time = 20 minutesPower = 5.6 Kilowatt = 5600 Watts.Conversion:
1 minute = 60 seconds20 minutes = [tex]20 \times 60 = 1200[/tex] seconds.To determine the amount of work done by the motor:
Mathematically, the work done by an object with respect to power and time is given by the formula:
[tex]Work\;done = power \times time[/tex]
Substituting the given parameters into the formula, we have;
[tex]Work\;done = 5600 \times 1200[/tex]
Work done = 6,720,000 Joules
Note: 1,000,000 Joules = 1 Megajoules.
Work done = 6.72 Megajoules.
Read more on work done here: https://brainly.com/question/13818347
Sound waves move the fastest through which medium
Water at high temp
Water at low temp
Air at high temp
Air at low temp
Answer:
water at high temperature
Explanation:
When heated, molecules move faster which results in the sound waves being transmitted faster.
hii please help i’ll give brainliest!!
Answer: It is the second one
Explanation: Just please trust me on this one
Answer: The answer to it is
B
Explanation:
Question 2 of 5
What is an example of anaerobic exercise?
A. Walking
B. Lifting weights
C. Swimming
D. Dancing
SMIT
Answer all of these questions and you will get the brainlist
What volume of silver metal will have a mass of exactly 2.5 kg, given that the density of silver is 10.5 g/cm3? (Hint: Note the units of mass given and the units of density.)
Answer:
238.09 cm^3
Explanation:
V=mass/density
V=2500/10.5
V=238.09 cm^3
What is the starting and final form of energy for someone playing the piano
__________ is the
process by which populations change over
time.
Evolution, is a process that results in changes in the genetic material of a population over time.
please help me answer!! why can't you cry in space? thanks!!
Answer:
we can't cry in space like we do earth.... because there is no gravity... due to which the tears not fall down..instead they make a liquid clump...near eyes
Which stretch focuses on stretching the glutes and hamstrings while laying on your back?
Question 4 options:
Knee to hip
Bent knee
Knee to Chest
Chest flies
tyyyyyyyy
Answer:
knee to chest
Explanation:
I took the test
Answer:
C. Knee to chest.
80 POINTS, BRAINLIEST, AND QUESTION IS MULTIPLE CHOICE!!! (please answer quickly)
question:
If all matter has a gravitational force, why don’t two tennis balls on the ground move towards each other on their own?
A. The force of gravity from the tennis balls is too small.
B.The tennis balls are outside of each other’s gravity field.
C.The tennis balls are too small to produce any gravity.
D.There is too much friction between the balls and the ground
(the picture is just of the question)
Answer:
Since gravitational force is inversely proportional to the square of the separation distance between the two interacting objects, more separation distance will result in weaker gravitational forces. So as two objects are separated from each other, the force of gravitational attraction between them also decreases.
When dealing with the force of gravity between two objects, there are only two things that are important – mass, and distance. The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them.
Explanation:
I could be wrong but I would say B :)
Have a good day!
answer:
i believe the answer is d
explanation:
here's why;
c. is incorrect because everything has a gravitational force.
a. is also incorrect because gravity is what holds the tennis ball down and keeps it on the ground.
i don't really know how to explain why b. is wrong, but d. is the correct answer because the force of friction opposes the motion of an object, causing moving objects to lose energy and slow down.
good luck :)
i hope this helps
**please let me know if this was incorrect**
have a great day !!
Rama weighs 48 kg.she is carrying a load of 25 kg up to a height of 15 meter. what work does she do ? Also mention the type of work
Answer:
Explanation:
Total Mass: 48+25=73 kg
Height: 15m
So work = mgh= 73×9.8× 15=10731 j
And this is positive work.
a car travels at a constant speed of 30km/h for .80h what is the total distance
Answer:
2400 km
Explanation:
30km for 1hr
Need up to 80 hrs , multiply both 80 and 30
So its 2400km
in hydraulic pressure the area of the larger piston is half of the smaller piston.if the force of 4000N is applied on the smaller piston.what is the distance covered by the train ?
Answer:
The distance moved by the train is half the distance moved by the force
Explanation:
Given that the force applied to the smaller piston, F₂ = 4,000 N
The pressure in the area of the larger piston, A₁ = 2 × The pressure in the smaller piston, A₂
∴ A₁ = 2 × A₂
We have;
[tex]\dfrac{A_1}{A_2} = \dfrac{2\cdot A_2 }{A_2} =2 = \dfrac{F_1}{F_2}[/tex]
F₁ = 2·F₂ = 2 × 4,000 N = 8,000 N
F₁·d₁ = F₂·d₂
∴ 8,000 N ×d₁ = 4,000 N × d₂
d₁ = 1/2·d₂
∴ The distance moved by the train is half the distance moved by the force
Why are the oceans movements along the What do ocean waves have in common with the sound and light
Answer:
Oceanic currents an waves are in motion due to energy of wind.
Explanation:
When the wind blows across the ocean water ts creates a pull and push effect. It pulls the top layers of water and creates a frictional drag force that leads to the movement of water molecules and appears that the surface is moving. The movement can be seen in the form of surface oceanic currents and waves that are found through the entire globe. The ocean waves and currents carry with them the energy from one place to another.
would this be Newtons 1st, 2nd, or 3rd law
Answer:
Newton's First Law of Motion.
Explanation:
Newton's First Law of Motion states that a body continues its state of motion untill and unless an external force acts on it. Here, the truck moves forward even after the breaks are applied in order to maintain its State of motion.
Please list them from top to bottom, for exp like in your response, a,g,q,d. Giving quite some points for it.
What is the correct answer! Thank you for your help
hii please help i’ll give brainliest!!
How does the wind turbine generator work?
Answer: wind pushes directly against the blades of the turbine, which converts the linear motion of the wind into the rotary motion, then it spins the generator's rotor and the harder the wind pushes, the more electrical energy can be generated.
Explanation:
why the watt is called derived unit ?
Answer:
It is because it is a unit of Power(which is a derived quantity)
Alkaline earth metals have a low density
true
false
true
Explanation:
this is because melting point and boiling point decreases down the group because they are held together by attractions between positive nuclei and delocalised electrons
PLZZZZZZZZZ HELPPPPP. BRAINLEST GIVEN What is a force of attraction between an object and the earth due to gravity?
Answer:
acceleration due to gravity: -9.8 m/s^2
Fg=mass of object*(-9.8)
Explanation:
This is a pretty vague question, but I'll answer as best I can.
All matter has gravity. YOU have gravity, although your gravitational pull is small. So, the force of attraction between the Earth and an object on Earth is modeled as
Force of gravity=(Gravitational constant*mass of object 1*mass of object 2)/distance between objects squared
Note that distance between an object on Earth and Earth is the radius of Earth (distance to Earth's core/center of mass)
What is MyPyramid?
a.exercise program
b.health insurance plan
c.method of treating mental illness
d.guidelines for healthful eating
Answer:
d
Explanation:
lol Hope's this helps lovely
what are the 5 forces in science?
Applied Force.
Gravitational Force.
Normal Force.
Frictional Force.
Air Resistance Force.
Answer:
Gravity, Electromagnetism, Weak Interaction, Strong Interaction, Unifying the Fundamental Forces.
Explanation: