Answer:
Im not sure, are there options for it?
Explanation:
please help me answer these
If 3.5 waves have a distance of 42M what is the wavelength of one wave?
Please please please tell me how you exactly found the answer!!
Answer:
The answer is 12
Explanation:
Just divide 42/3.5
A subduction zone is where one plate is pulled under the edge of another and occurs in convergent plate boundaries. Which type of crusts are involved in the subduction zone?
a. continental-continental
b. continental-oceanic
c. oceanic-oceanic
Answer:
b. Continental-oceanic
Explanation:
The Earth's crust has been divided into a series of plates. These plates move at a different rate or speed in different directions.
These plates are divided by the boundary between them which are of three types: convergent, transform and divergent.
The convergent boundaries are the one which moves toward each other and the based on the crust they are of three types: continent-continent, ocean-ocean and ocean-continent.
In ocean-continent boundaries, the oceanic plate is denser compared to the continental plate is lighter as a result of which during the process of subduction the oceanic plate sinks beneath the continental plate towards the mantle and melts.
Thus, Option-B is the correct answer.
2 Which of the following effectively summarizes paragraph 2?
A The orientation in space, relative to the Sun, is the cause
of Earth's seasonal changes.
1
B There is an imaginary pole running through the center of
Earth from the North Pole to the South Pole, which is called
an axis.
C We also learned that Earth's axis is tilted 23.5
degrees from the perpendicular of the plane of the
ecliptic.
D The northern hemisphere has more daylight hours.
Answer:B
Explanation:
The statement that summarizes the paragraph is northern hemisphere has more daylight hours.
What is Earth?The Earth is part of the nine planet and it comprises of the equator, northern and southern hemisphere.
It is the most suitable place for living because it have water,oxygen and other gases that support life.
Therefore, The statement that summarizes the paragraph is northern hemisphere has more daylight hours.
Learn more about Earth below.
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A bus traveled at a constant speed of 80 km/h. How long did it take the bus to travel 40 km?
Answer:
1/2 hours
Explanation:
The formula for speed is given as;
s= d/ t -----where
s is speed , 80 km/h
d is distance , 40 km
t is time = ?
Making t is subject of the formula;
t= d/s
Using the values given
t= 40 / 80
t= 1/2 hours
A wire of resistance R is cut into ten equal parts which are then connected in parallel. The equivalent resistance of the combination is
Answer:
The equivalent resistance of the combination is R/100
Explanation:
Electric Resistance
The electric resistance of a wire is directly proportional to its length. If a wire of resistance R is cut into 10 equal parts, then each part has a resistance of R/10.
Parallel connection of resistances: If R1, R2, R3,...., Rn are connected in parallel, the equivalent resistance is calculated as follows:
[tex]\displaystyle \frac{1}{R_e}=\frac{1}{R_1}+\frac{1}{R_2}+\frac{1}{R_3}+...+\frac{1}{R_n}[/tex]
If we have 10 wires of resistance R/10 each and connect them in parallel, the equivalent resistance is:
[tex]\displaystyle \frac{1}{R_e}=\frac{1}{R/10}+\frac{1}{R/10}+\frac{1}{R/10}...+\frac{1}{R/10}[/tex]
This sum is repeated 10 times. Operating each term:
[tex]\displaystyle \frac{1}{R_e}=\frac{10}{R}+\frac{10}{R}+\frac{10}{R}+...+\frac{10}{R}[/tex]
All the terms have the same denominator, thus:
[tex]\displaystyle \frac{1}{R_e}=10\frac{10}{R}=\frac{100}{R}[/tex]
Taking the reciprocals:
[tex]R_e=R/100[/tex]
The equivalent resistance of the combination is R/100
Which term is also known as a "rate of change"? * a motion b distance c reference point d speed
Acceleration is the answer.............
The model shows how solar-powered electric cars indirectly use energy from the Sun. Describe the energy transformations that you see.
Answer:
Radiant energy from the Sun is converted into electrical energy. Electrical energy is then converted into chemical energy. Chemical energy is then converted into electric energy for the motor. The motor converts electrical energy into mechanical energy and makes the car move.
Sun makes radiant energy > converted to electrical energy through solar panels > converted to chemical energy which is then stored in a battery for the motor > converted into mechanical energy to make the car move
Extra:
Look at the image below for a better understanding of the question. I hope this helps! :)
Source:
Edmentum Guided Notes
The energy transformations that can be seen in solar-powered electric cars :
Solar energy > electrical energy > chemical energy > mechanical energy.
What is solar-powered electric cars?
A solar electric car is one that is primarily or entirely powered by solar energy. Solar panels typically feature photovoltaic (PV) cells that convert solar energy directly into electric energy. The phrase "solar vehicle" typically implies that all or some of a vehicle's propulsion is powered by solar energy. Communications, controls, and other auxiliary operations might all be powered by solar energy.
In solar electric car, solar energy converted into electrical energy by photovoltaic (PV) cells. This energy is stored in battery in the form of chemical energy. When the car moves, this chemical energy transforms into mechanical energy.
Learn more about solar-powered car here:
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Please help me I’ll mark brainliest
this is life science
A chef fills 50cm3 container with 250g of cooking oil what is the density of the oil?
Given that,
Mass, m = 250 g
Volume of the container, V = 50 cm³
To find,
The density of the oil.
Solution,
Density = mass/ volume
The computation for density is as follows :
[tex]\rho =\dfrac{m}{V}\\\\\rho =\dfrac{250\ g}{50\ cm^3}\\\\=5\ g/cm^3[/tex]
So, the density of the oil is [tex]5\ g/cm^3[/tex].
When magma is cooled, it changes into which of the following?
Answer: You didnt finish the question. But as magma cools it turns to igneous rock.
a car covers at speed of 50m/s. how far it travels in 5 minutes
Answer:
15,000 m
Explanation:
[tex]speed = \frac{distance}{time} [/tex]
speed = 50 m/s
time = 5 minutes × 60
= 300 seconds
substitute the values into the formula
[tex]50 = \frac{distance}{300} [/tex]
[tex]50 \times 300 = distance[/tex]
[tex]15000 \: m = distance[/tex]
[tex]distance = 15000 \: m[/tex]
Which type of wave has the longest wavelength?
Gamma rays
Ultraviolet rays
Visible light
Microwaves
Radio waves
Answer:
Radio Waves
Explanation:
A horse pulls a plow with a 242 N force for
61.7 m. How much work does the horse do?
A. 3.92 J
B. 180 J
C. 0.255 J
D. 14900 J
Answer: The answer is D
Explanation: i had the same question and i just guessed and got it first try
Answer:
Explanation:
its D i have all my notes here and the top person of me is right :)
if an object with a mass of 248kg is lifted 76 meters in 18 seconds, how much power is used?
Explanation:
power = 1/2 mass × velocity^2 >>1
velocity = distance / time = 76 /18 = 4.2m
then power = 1/2 × 276 × (4.2)^2 = 138 × 17.64 = 2,434.3 jules.
The moon has a mass of 7.34 . 102 kg and a radius of 1.74 . 106 meters. If you have a mass of 66 kg,
how strong is the force between you and the moon?
Answer:
[tex]F=1.06\times 10^{-18}\ N[/tex]
Explanation:
Given that,
Mass of the Moon, [tex]M=7.34\times 10^2\ kg[/tex]
Mass of the person, m = 66 kg
The radius of Moon, [tex]r=1.74\times 10^6\ m[/tex]
We need to find the force between the person and the Moon. The formula for the gravitational force is given by :
[tex]F=G\dfrac{Mm}{r^2}\\\\F=6.67\times 10^{-11}\times \dfrac{7.34\times 10^2\times 66}{(1.74\times 10^6)^2}\\\\=1.06\times 10^{-18}\ N[/tex]
So, the required force is [tex]1.06\times 10^{-18}\ N[/tex].
An 82 kg man, at rest, drops from a diving board 3.0 m above the surface of the water and comes to rest 0.55 s after reaching the water. What force does the water exert on him?
Answer:
1626.4 N
Explanation:
Given that a 82 kg man, at rest, drops from a diving board 3.0 m above the surface of the water and comes to rest 0.55 s after reaching the water. What force does the water exert on him?
The parameters to be considered are:
Distance S = 3m
Time t = 0.55s
Since the man started from rest, initial velocity u = 0
Using second equation of motion
S = Ut + 1/2at^2
3 = 1/2 × a × 0.55^2
3 = 1/2 × a × 0.3025
a = 3/ 0.15125
a = 19.83 m/s^2
Force = mass × acceleration
Force = 82 × 19.83
Force = 1626.4 N
Therefore, the force that water exerted on him is 1626.4 N
Which of the following would be considered an exercise program?
a
basketball
b
football
c
aqua dynamics
d
soccer
Answer:
c
Explanation:
What is the momentum of a two-particle system composed of a 1400 kg car moving east at 70 m/s and a second 1300 kg car moving west at 85 m/s? Let east be the positive direction and answer to 3 significant figures.
Answer:
209000 kg*m/s
Explanation:
Momentum is caclucated using the equation P=mv. Where m is mass and v is velocity.
If you are required to show your work it would be the following:
1400*70=98000 kg*m/s
1300*85=110500 kg*m/s
98000+110500=208500 kg*m/s
209000 kg*m/s
You serve a volleyball with a mass of 1.4 kg. The ball leaves with a speed of 13 m/s. Calculate KE
Answer:
118.3 J
Explanation:
Givens:
m = 1.4 kg
V = 13 m/s
Formula for kinetic energy:
KE = (1/2)*(m)*(v)^2
KE = .5*(1.4 kg)*(13 m/s)^2
KE 118.3 J
J = Joules
A 54\,\text {kg}54kg54, start text, k, g, end text pig runs at a speed of 1.0\, \dfrac{\text m}{\text s}1.0 s m 1, point, 0, start fraction, start text, m, end text, divided by, start text, s, end text, end fraction.
Answer:
Following are the solution to this question:
Explanation:
In this question, some of the information is missing that's why its solution can be defined as follows:
[tex]v= 0\\\\u= 1.0 \frac{m}{s} \\\\s= 1\\\\m= 54 \ kg\\[/tex]
Using formula:
[tex]\to v^2-u^2=2\cdot a\cdot s \\\\\to 0^2 - 1.0^2= 2 \cdot a \cdot 1\\\\\to - 1=2a\\\\\to a= -\frac{1}{2} \ \frac{m}{s^2}\\\\ \to \bold{F= m\cdot a}\\\\[/tex]
[tex]=54 \times - \frac{1}{2}\\\\= -27\ N[/tex]
why the spinner of a washing machine is made to spin at a very high speed
Answer:
Once rinsed, the inner drum starts to spin at high speed to remove any remaining water. This water goes out through the small holes in the inner drum into the outer drum before the pump removes any remaining water, and your clothes are ready to be taken out to dry
global climate is determined
Answer:
Global climate is determined depending on the amount of energy given from the sun to the certain area.
Example:
When it is Summer, (June, July) the Northern Hemisphere receives the most light and heat because it is tilted toward the sun.
Solve for v
when
d = 10 and
t=5
Answer:
asfsdfasasfsda
Explanation:
Answer:
IDEK HOW TO SOLVE
Explanation:
an iron rod of length 100m at 10 degree Celsius is used to measure a distance of 2km on a day when the temperature is 40 degree Celsius. Calculate the error in measuring the distance
Answer:
0.68 m
Explanation:
α = dL / L1*(dT)
dL = L1(dT) * α
Initial length, L1 = 100
Chang in Length =dL
α linear expansivity ; dL = change in length ; dT = change in temperature ; L1 = initial length
α of iron rod = 1.13 * 10^-5 k
dL = 100(40 - 10) * 1.13 * 10^-5
dL = 100(30) * 1.13 * 10^-5
dL = 3000 * 1.13 * 10^-5
dL = 3390 * 10^-5
dL = 0.0339 m
Error :
Distance measured = 2km = (2 * 1000) = 2000m
[Distance measured / (initial length + change in length)] × change in length
Error = (2000 / (100 + 0.0339)) * 0.0339
Error = (2000 / 100.0339) * 0.0339
Error = 19.993222 * 0.0339
Error = 0.6777702
Error = 0.68 m
A boy is pulling a 150 kg crate with a force of 1150 N. If the crate experiences a frictional force of 490 N, find:
a) The acceleration of the crate.
b) The normal force acting on the crate.
First, let's find the resultant, and applicate 2nd law of Newton using the resultant, so:
R = ma
F - Ff = ma
Data:
F = Force = 1150 N
Ff = Friction force = 490 N
m = Mass = 150 kg
a = Aceleraction = ?
Replacing according our data:
1150 N - 490 N = 150 kg * a
660 N = 150 kg * a
660 N / 150 kg = a
a = 4,4 m/s² ← Aceleration of the object
For the normal force:The normal force IS NOT the resultant force, the normal force's the force between the ground and the object, in another words, is the weight of the object, and for the weight:
w = mg
w = 150 kg * 10 m/s²
w = 1500 N ← Normal force between object and ground.
20
Select the correct answer.
Which of these factors will increase the speed of a sound wave in the air?
A. slowing down the movement of particles in the air
OB. raising the temperature of the air
C.
removing particles form the air
D. decreasing the kinetic energy of the air
OE.
stopping particle collisions in the air
Reset
Next
Answer:
B. raising the temperature of the air
Does anyone get this? lol
Answer:
(a). 640.000 --- 6 significant figures.
(b). 2.0 --- 2 significant figures.
(c). 0.520200 --- 6 significant figures.
(d). 10.05 --- 4 significant figures.
(e). 10,000.0 --- 6 significant figures.
(f). 30.7 --- 3 significant figures.
(g). 0.00000065 --- 8 significant figures.
TRUE OR FALSE: some rays of light carry radiation.
Answer:
true
Explanation:
Answer:
True
Explanation:
