good morning to you all! can someone please answer this, ill give you brainliest and your earning 50 points.
Answers
Some natural hazards are preceded by geologic activities that allow for reliable predictions; other natural hazards occur suddenly, with no notice, and are not yet predictable.
TrueThere are some disasters that can be predicted like tornadoes, tsunamis etc.. But some hazards like earthquake cannot be predicted. Still the technology has not developed so much that it could predict earthquakes...~
Answer:
True
Explanation:
Yes we became modern a lot and are too ahead in terms of technology .We can predict cyclones way before it happens .We can predict tornadoes by measuring air pressure.But we are still unable to predict some hazardous things such as earth quake.Related Questions
Compare and contrast the electric forces with the gravitational force.
please help, i need this asap
Answers
Answer:
They both act between two bodies without any means of contact. However gravitational force acts on mass while the electric force acts on charge. Gravitational force are only attractive while electric field can be attractive/repulsive. Electric field is much stronger than gravitational field.
Explanation:
What is the gravitational potential energy of a 1 kg ball that is 2 meters above the floor?
a
3 j
b
9.8 j
c
19.6 j
d
21 j
e
29.8 j
Answers
Answer:
C
Explanation:
We have to use the formula for potential energy(mgh).
MGH=(1)*(9.8)*(2)=19.6
Write a personal narrative (from the perspective of the Earth) of your year long journey around the sun. Be sure to include information about the phases of the moon.
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Here is a funny note
I started my journey through a rocket .Before which our team created a space satelite with suitable requirements which can handle sun's heat from closest .We took enough foods and minerals to take during our journey.We took around 2years to reach suns orbit .Then we travelled around it via our satelite .We collected some datas about it .Then we came back.That was a happy and adventurous journey.Can someone help me please? I’ve been trying to solve these questions all day.
Answers
#16
If we put a resistor in circuit it will slow the speed of current
Let's check ohms law
[tex]\\ \rm\Rrightarrow \dfrac{V}{I}=R[/tex]
So if resistance is more current is less#17
Again use ohms law
[tex]\\ \rm\Rrightarrow V=IR[/tex]
[tex]\\ \rm\Rrightarrow V\propto I[/tex]
Voltage must be increasedBased on the chemical equation provided, use the drop-down menu to choose the coefficients that will balance the chemical equation.
( )H2 + ( )O2 → ( )H2O
Answers
Answer:
2h2+2o→2h2o is the answer
Answer:
2
1
2
Explanation:
9) How much kinetic energy does a person have riding a bike is going 12 m/s? Let's assume that the
bike and person have a mass of 70kg.
A)
B)
C)
Answers
Kinetic Energy = [tex]\frac{1}{2} m*v^2[/tex]
m: mass -->70 kgv: velocity --> 12 m/sKinetic energy = [tex]\frac{1}{2}*70*(12^{2} ) = 5040[/tex] Joules
Hope that helps!
What is the best definition of profit?
Answers
Answer:
Excess currency after a series of deals or fees.
Explanation:
Let's put profit in perspective by using an example. For example, let's say you spend 72 dollars to build a certain product, then you sell that same product to your friend for 116 dollars. It costed 72 dollars to build that product and you sold it for 116, after subtracting the costs for building the product the excess currency is what you would call profit. Profit is your overall goal when running a business, you want to sell a product and make profit from it.
Hope this helps.
profit is your gain on any problem,situation or opportunity given to you
When do astronomers now think that the ""dark energy"" began to accelerate the expansion of the universe?.
Answers
Answer:
Cosmologists estimate that the acceleration began roughly 5 billion years ago. Before that, it is thought that the expansion was decelerating, due to the attractive influence of matter. The density of dark matter in an expanding universe decreases more quickly than dark energy, and eventually the dark energy dominates.
Explanation:
Pls, choose me as brainliest!
Answer:
1988
Explanation:
Dark energy was discovered in 1998 with this method by two international teams that included American astronomers Adam Riess and Saul Perlmutter and Australian astronomer Brian Schmidt.
Refer to the following series circuit: + R R, = 17.2 V R, = 52 1:11 V = 15V R, 1 I Calculate the total power developed in the circuit. P= Choose... watts Choose... 15 120 98 Submit Answer Skip C Notes
Answers
Series connection
R=R1+R2=10+5=15[tex]\Omega[/tex]V=15VNow
[tex]\\ \rm\Rrightarrow P=\dfrac{V^2}{R}[/tex]
[tex]\\ \rm\Rrightarrow P=\dfrac{15^2}{15}[/tex]
[tex]\\ \rm\Rrightarrow P=15W[/tex]
shape of houses built in areas with hot climate and materials used
Answers
Answer:
Cement and sand will do
Explanation:
because without it you can't build
Answer:
Shape of houses built in areas with hot climate
Compact house forms, rather than sprawling, multi-wing designs work best in hot locales. Home designs with shaded porches, wrap around porches or plans with courtyards that create a shaded open area within the building are ideal.
How do you build a house in hot climates?
Place courtyards centrally to enhance cooling and ventilation. ...
Choose the right materials. ...
Use waterbodies and landscaping effectively. ...
Shade terraces and outdoor spaces. ...
Create sheltered, barrier-free spaces for air circulation. ...
Extend roofs to protect the walls and windows from direct heat.
Materials used building in areas with hot climate
The most common materials used for building walls in the warm-humid regions are stones, and earth-based bricks.
Concrete, bricks, and tile have a high thermal mass due to the large amount of heat energy needed to change their temperatures. This makes concrete an ideal building material for climates that are hot during the day but cooler at night.
An airplane propeller rotates with an angular speed of 260rad/s. Through what angle does the propeller rotate in 5.0s? Give your answer in both radians and degrees
Answers
Answer:
I hope this will help......
A Force of 940N does a Work of 3760 Joule in displacing a given object. Find the displacement.
Answers
Question :-
A Force of 940 N does a Work of 3760 J in Displacing a given object . Find the Displacement .Answer :-
Displacement is 4 meter .[tex] \rule {180pt} {2pt} [/tex]
Given :-
Force = 940 NewtonWork = 3760 JouleTo Find :-
Displacement = ?Solution :-
As per the provided information in the given question, Force is given 940 Newton . Work is given 3760 Joule . And, we have been asked to calculate the Displacement .
For calculating the Displacement , we will use the Formula :-
Displacement = Work / ForceTherefore , by Substituting the given values in the above Formula :-
⇒ Displacement = Work / Force
⇒ Displacement = 3769 / 940
⇒ Displacement = 4
Hence :-
Displacement = 4 meter .[tex] \underline {\rule {180pt} {4pt}} [/tex]
Force applied (F) = 940 N
Work done = 3760J
Find:
Displacement (s) = ?
Since, work done (W) is written as
W = (F)(s)
W = Fscos0
W = Fs —> s = W/F
s = 3760J/940N
s = 4m
Therefore, the displacement of the object is 4m
At 40 degrees is 25g of NaNO3 saturated or unsaturated?
Answers
I think unsaturated
because -
At 55°C, a saturated solution would contain 120 g of solute, NaNO3. (Notice, this point is exactly on the solute's curve). If, for example we mixed in 140 g of NaNO3 instead of 110 g of solute at 55°C, we would create a SUPER saturated solution, because we would be at a point ABOVE the solute's solubility curve.
Explain that sound is a longitudinal wave that has a frequency, wavelength, and speed.
Answers
Hope it helps x
Two bulldozers are pushing on a large tree trunk as shown. (last photo)
Click on the diagram until it correctly represents the expected movement and force.
Answers
The tree will fall in the south eastern side of the area due to two bulldozer.
Direction of tree fallingThe tree falls in the sloppy direction due to both bulldozer which apply force from two directions. One bulldozer apply force on the tree from western side whereas the other bulldozer apply force on the tree from north side so that's why we can say that the tree will fall in the south eastern side of the area.
Learn more about force here: https://brainly.com/question/12970081
Answer:
Maybe it; the 4th image
Explanation:
The upper bulldozer have more force than the lower bulldozer. Therefore making the down force longer than the right force
A bus wheel has a diameter of 0.80 m and an angular velocity of 20 rad/s. What is the linear velocity of the wheel?
Answers
The linear velocity of the wheel is 16 m/s.
What is linear velocity?Linear velocity is the rate of change of displacement with regard to time when the object is moving in a straight line
To calculate the linear velocity of the wheel, we use the formula below.
Formula:
v = ωr............. Equation 1Where:
v = Linear velocityω = Angular velocityr = Radius of the wheel.From the question,
Given:
ω = 20 rad/sr = 0.80 mSubstitute these values into equation 1
v = 20(0.8)v = 16 m/s.Hence, The linear velocity of the wheel is 16 m/s.
Learn more about linear velocity here: https://brainly.com/question/25749514
Based on fossil evidence, about how long ago did the
first single-celled life form appear on Earth?O 130 million years ago
O 1.5 billion years ago
O
2.5 billion years ago
O
4.1 billion years ago
Answers
Answer:
4.1 billion
Explanation:
A sound wave has a frequency of 695 Hz in air
and a wavelength of 0.49 m.
What is the temperature of the air?
Relate the speed of sound in air to temperature in units of Kelvin, but answer in units
of Celsius.
Assume the velocity of sound at 0 ◦C is
332 m/s.
Answer in units of degC
Answers
This question involves the concepts of the speed of sound, frequency, and temperature.
The temperature of the air is "14.24 °C".
Temperature of AirFirst, we find the speed of sound at the given temperature:
v = fλ
where,
v = speed of sound = ?f = frequency = 695 Hzλ = wavelength = 0.49 mTherefore,
v = (695 Hz)(0.49 m)
v = 340.55 m/s
Now, the relationship between the speed of sound and temperature can be given by the following formula:
[tex]\frac{v}{v_o} = \sqrt{\frac{T}{273\ k}}\\\\T = (273\ k)(\frac{v}{v_o})^2\\\\[/tex]
where,
T = Temperature = ?v = speed of sound in air at given temperature = 340.55 m/sv₀ = speed of sound in air at 0°C = 332 m/sTherefore,
[tex]T = (273\ k)(\frac{340.55\ m/s}{332\ m/s})^2[/tex]
T = 287.24 k = (278.24 k -273) °C
T = 14.24 °C
Learn more about the speed of sound here:
https://brainly.com/question/15381147
An arch carries the thrust of weight to its _____(1)______. With a _____(2)______, the horizontal part of the structure supports all the weight above it. A. (1) center; (2) post-and-bearing b. (1) base; (2) springing line c. (1) keystone; (2) groin vault d. (1) sides; (2) post-and-lintel Please select the best answer from the choices provided A B C D.
Answers
Option D is correct. An arch carries the thrust of weight to its sides with a post-and-lintel.
What is an arch?
An arch is indeed a vertical curving construction that covers an elevated space that may or may not sustain the load above it or the pressure gradient against it
In the case of a horizontally arched, such as an embankment dam. While arches and vaults are often confused, A vault is defined as an ongoing arch forming a roof.
Option D satisfies the fill-in blanks option.
Hence option D is correct. An arch carries the thrust of weight to its sides with a post-and-lintel.
To learn more about the arch refer to the link;
https://brainly.com/question/18162421
waves that move through matter are only called ______________ waves
Answers
5 10 points Sanzida conducted an experiment that required a wire carrying a current to be wrapped around a metal core. When she placed th metal rod, she observed the magnet move toward the rod. Which conclusion can Sanzida draw from this experiment? O The current in the wire has created a gravitational field with its south pole at the top of the rod. The current in the wire has created a magnetic field with its south pole at the top of the rod. The current in the wire has created a magnetic field with its north pole at the top of the rod. The current in the wire has created a gravitational field with its north pole at the top of the rod.
Answers
The current in the wire has created a magnetic field with its north pole at the top of the rod. A magnetic field influences electric currents.
What is a magnetic field?A magnetic field is a type of field that influences the position and direction of the electric current.
The magnetic field also refers to the one where magnetic forces act to shape an electrical current.
The only material and/or body capable of altering an electrical current in a magnetic field is the presence of another magnetic field.
Learn more about magnetic fields here:
https://brainly.com/question/14411049
Does everything in a black hole contain a singularity?
Answers
Answer:
All black holes contain singularities, however not all singularities involve black holes. A neutron star may be dense, matter the size of a pinhead can weigh as much as the earth, but there seems to be a mathematical cut-off point beyond which a black hole is formed.
Which of the following is NOT an example of good static flexibility?
A.
doing and holding a split
B.
running a mile in six minutes
C.
holding a ballet position for six minutes
D.
crossing your ankles behind your head
Answers
Answer:
running a mile in six minutes
Explanation:
Answer:
Not example is B: Running a mile in six minutes
What happens to the air in an air pump when being pumped into a tire? What happens to the air when allowed to escape from a tire?
Answers
what is the difference between serious and parallel circuit
Answers
In parallel circuits, the behavior of the current as it flows through the circuit is largely dictated by the fact that an electric current will seek out the lowest-voltage portions in a system and occupy these areas in whatever manner it is able to do.
It's not quite that straightforward, but you'll be relieved to know that there are only a handful of extra rules to consider in this situation. What exactly determines the path of least resistance for a current is a mystery.
I hope this helps you
:)
An elongated drop of blood was found with a width of 4.33 mm and a length of 5.0
mm. At what angle did the blood drop hit the surface?
0°
30°
60°
90°
Answers
SinФ = w/l
SinФ = 4.33 / 5.0
Ф = arcsin 4.33/5.0
Ф = 59.99 degrees
Round to 60 degrees
What is the all time speed record for completing the iditarod?.
Answers
•What is the all time speed record for completing the iditarod?
Answer:
•In 2016, Dallas broke his own record, finishing in 8 days, 11 hours, 20 minutes and 16 seconds. In 2017, Mitch Seavey broke all previous records by finishing in 8 days, 3 hours, 40 minutes and 13 seconds, which currently stands as the fastest winning time for the Iditarod.
Explanation:
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What is the main difference between cardio and strength-training activities? A. Cardio activities increase your physical strength, while strength-training activities work your heart and lungs. B. Cardio activities work your heart and lungs, while strength-training activities strengthen your muscles. C. Cardio activities require short bursts of energy, while strength-training activities strengthen your body over long durations. D. Cardio activities improve your joints' range of motion, while strength-training activities work your heart and lungs.
Answers
Answer:
B: Cardio is really to improve your circulatory and etc while strength that's common sense
Explanation:
Answer:
B
Explanation:
A police officer on a mountain bike is cruising at a speed of 3.50m/s, when he sees a wanted
criminal, standing on a corner, 75m ahead of him. If the police officer accelerates at a rate of
2.00m/s^2, how much time will he take to reach the corner?
Answers
Answer:
7 seconds
Explanation:
please see paper!
vf² = vo²+2ad
vf=vo+at
vf²=3.5²+2.2.75
vf²=312.25
vf=17.67 m/s
vf=vo+at
17.67 = 3.5 +2t
t=7.085 s
During what moon phase is a lunar eclipse possible.
Answers
Step by Step explanation
When Earth is positioned precisely between the Moon and Sun, Earth's shadow falls upon the surface of the Moon, dimming it and sometimes turning the lunar surface a striking red over the course of a few hours. Each lunar eclipse is visible from half of Earth.