Answer:
H = 8.45 m
Explanation:
Given that,
Angle of projection, [tex]\theta=37^{\circ}[/tex]
The initial velocity of the ball, u = 20 m/s
We need to find the maximum height reached by the ball. The formula for the maximum height is given by :
[tex]H=\dfrac{u^2\sin^2\theta}{2g}\\\\H=\dfrac{(20)^2\times \sin^2(37)}{2\times 9.8}\\\\H=8.45\ m[/tex]
So, the maximum height reached by the ball is 8.45 m.
8. A partial food web is shown. The mourning dove is a bird that is often part of this food web. Which of these describes the mourning dove when it is part of the food web shown? A Parasite-host relationship with the robin because it uses the robin's nest. B Predator-prey relationship with tent caterpillars because they both use the same resources from the sugar-maple tree. C Producer-consumer relationship with sugar-maple trees because it gets food from the trees. D Producer-consumer relationship with its young because it feeds its young regurgitated food
Answer:
It has producer-consumer relationship with sugar-maple trees because it gets food from the trees.
Explanation:
The mourning bird is primarily a seed eater and not an insect eater. Since it is a seed eater, it will directly from the sugar-maple tree which is the producer.
In an ecosystem, the producers are plants which can trap energy directly from the sun during photosynthesis. This energy is passed on to the consumers.
Hence, the mourning bird has producer-consumer relationship with sugar-maple trees because it gets food from the trees.
What is the Martian atmosphere like ?
Answer:
Mars' atmosphere however is 95% carbon dioxide, 3% nitrogen, 1.6% argon, and it has traces of oxygen, carbon monoxide, water, methane, and other gases, along with a lot of dust. Dust hanging in the air colors Martian skies tan in photos taken from the surface. Relative to Earth, the air on Mars is extremely thin.
Explanation:
III. A vehicle is travelling 105 km/h on a highway when the driver sees a moose in the
middle of the lane.
A. Determine the distance travelled by the vehicle while the driver is reacting.
Assume the driver's reaction time is 1.50 S.
If the frequency of an electromagnetic wave is reduced to one third, what happens to the wavelength?
5. What things would settle in pond water, making it turn to land (terrestrial) succession?
Answer:
Organic matter
Explanation:
As organic matter continue to build up in a pond, vegetation will begin to appear in the pond. The first set of vegetation to appear are the floating vegetation. Subsequently, submersed plants begin to grow also.
With time, organic sediments continue to fill the pond and its depth is gradually decreased. A swamp or bog is now formed.
This trend of succession continues until the pond eventually turns into land.
Imagine you are in a car that’s going 50 mph on the highway. All of the sudden the car comes to a very quick and sudden stop. What happens to your body when the car comes to a stop?
Answer:
you would fall forward due to inertia of motion..
what is principal focus and focus length with examples
Explanation:
Principle focus is the point on the axis of a convex lens, where the parallel rays of light from one side of the lens. meet on other side after refraction. Distance between optical centre to principle focus point is the focal length.
Delilah does 170 Joules of work in 30 seconds. Adam does 260 Joules of work in 20 seconds. Who was more powerful?
Power = [tex]\frac{Work}{Time}[/tex]
Delilah: 170J/30s = 5.66 W
Adam: 260J/20s = 13 W
AN AIR CRAFT HEADS NORTH AT 320KM/H RELATIVE TO THE WIND THE WIND VELOCITY IS 80KM/HFROMNORTH .FIND THE VELOCITY OF THE AIR RELATIVE TO THE GROUND
Answer:
Explanation:
See attached file for answer.
PLEASE if you see these people (they all seem to have the same profile picture) NOTIFY THE PERSON ASKING THE QUESTION THAT THIS IS MALWARE AND REPORT IT!!
Stay safe, everyone!
(posting this in all subjects)
Answer:
ʕ •ᴥ•ʔ
Explanation:
Can someone proofread this plz? I put my answers next to the number, so all I need you to do is proofread it. the picture for number 5 is pinned below.
Question 1 (1 point) A
Saved
Waves transfer energy through matter or space.
Question 1 options:
True
False
Question 2 (1 point) A
Saved
Mechanical waves can travel only though a _______________ such as a solid, liquid, or gas.
Question 2 options:
medium
vacuum
prism
anemometer
Question 3 (1 point) B
Saved
Which of the following is not a type of mechanical wave?
Question 3 options:
transverse
concave
surface
longitudinal
Question 4 (1 point) C
Saved
The particles in this wave move perpendicular to the direction of the movement of the wave. These waves are snake like.
Question 4 options:
surface
transverse
longitudinal
cyclone
Question 5 (1 point) A
Saved
The arrow points to an example of
Wave
Question 5 options:
rarefaction
sound barrier
compression
prism
Question 6 (6 points) 5,1,4,3,2,6
Saved
Match each term to its definition
Question 6 options:
answer here ___
Higher the pitch
answer here___
top of the wave
answer here___
Louder
answer here___
Distance from crest to crest
answer here___
bottom of the wave
answer here___
Height of wave
1.
Crest
2.
Trough
3.
Wave length
4.
Amplitude
5.
Higher the frequency
6.
Higher the Amplitude
Question 7 (1 point)
What is the resulting direction of a surface wave?
Question 7 options: C
opposite
circular
perpendicular
parallel
Question 8 (1 point) C
Constructive interference occurs when the crest of 2 waves meet. This can occur when 2 troughs meet as well. When this occurs, water waves look
Question 8 options:
larger
invisible
smaller
the same (no change)
Question 9 (1 point) C
Saved
Water waves are surface waves. The energy of the waves moves
Question 9 options:
both parallel and perpendicular to the wave
only parallel to the motion of the wave
only perpendicular to the motion of the wave
Question 10 (1 point) A
Which molecule makes up 3/4s of the surface of Earth?
Question 10 options:
CO2
NaCl
H2O
C6H12O6
Question 11 (1 point) A
Saved
Water does not expand when it freezes.
Question 11 options:
True
False
Question 12 (7 points) 3,4,1,2,7,6,5
Saved
Match the clue with correct answer
Question 12 options:
3
1
4
tributaries
1
estuary
2
6
7
chloroplast
6
3
5
nucleus
1.
Small rivers that flow into larger rivers
2.
Number of states that drain into Chesapeake Bay
3.
The Chesapeake Bay Watershed ranks what place in the US in terms of estuary size
4.
A body of water containing salt and fresh water.
5.
control center of cell
6.
The Cell Theory has how many statements?
7.
The site of photosynthesis
Question 13 (1 point) D
Saved
What do eukaryotes have that prokaryotes don't?
Question 13 options:
ribosomes
cytoplasm
plasma/cell membrane
nucleus
Question 14 (1 point) 1,4,3,5,2
Saved
Arrange in order from smallest to largest
Question 14 options:
1
cell
4
organ system
3
organ
5
organism
2
tissue
Answer:
i do believe you got them all right
good job :)
good luck :)
i hope this helps
have a great day !!
Answer:
._.
Explanation:
There are 1187 students in a large city school.
There are 42 classes in the school.
Approximately, how many students are in
each class?
Hur decision
Answer:
29 students
Explanation:
1187÷42= 28.26
Where is the most and the least KENETIC ENERGY
Answer:
Where is kinetic energy the least?, and most?
Explanation:
Least : When the Moon is farthest from Earth in its nearly elliptical orbit, its speed is least. Its kinetic energy has become least, and its potential energy is greatest.
Further : Kinetic energy, form of energy that an object or a particle has by reason of its motion. If work, which transfers energy, is done on an object by applying a net force, the object speeds up and thereby gains kinetic energy.
May be different for you, but i really hope I helped out.
Which of these objects has kinetic energy?
Answer:
A ball moving through the air.
Explanation:
The ball has momentum which is a form of kinetic energy.
I don't know if that is correct, but I hope it helps!!!!
I need help do in a hour
Noah and Nina are 15 m apart in a closed room. Noah
says the same sentence twice. The first time, Nina
does not hear the sound, but she does hear the
sentence the second time.
What best describes the difference between the
second sound wave and the first?
The second sound wave reflects off the walls of the
room, so Nina is able to hear the sound.
O The second sound wave travels faster to Nina, so
less energy is dissipated through the air.
O The air molecules in the compressions of the
second wave are more dense, so the sound is
louder
The air molecules in the second wave are spaced
evenly, so a high-frequency wave is produced.
Answer:
The air molecules in the compressions of the second wave are more dense, so the sound is louder.
Explanation:
In a closed room, Noah and Nina are sitting 15 m apart.
As Noah says the same sentence twice, Nina does not hear the sound the first time but she does hear the sentence the second time.
This happens as the air molecules in the compressions of the second wave are more dense. As a result, the sound is louder.
The correct option is ''The air molecules in the compressions of the second wave are more dense, so the sound is louder''
Answer:
C. The air molecules in the compressions of the second wave are more dense, so the sound is louder.
Explanation:
I can confirm that the answer to your question is C.
which class of lever do spoon and scissors belong to?
Answer:
spoon and scissors belong to first class lever.
hope it is helpful to you
A football is kicked 40 m. if the ball is is the air for 4 s, with what initial speed was it kicked.
Answer:
10m/s
Explanation:
formula will be speed = distance / time
distance = 40m
time= 4s
if you put them together will be
speed = 40m/ 4s
speed =10m/s
how can we realize that light travel in straight line ?
Answer:
It can be seen from the operation of pin-hole camera, formation of shadows and eclipse.
Explanation:
The phenomenon of light traveling in a straight line is known as rectilinear propagation of light.
One this evidence can be seen from the operation of pin-hole camera, which depends on rectilinear propagation of light
Also two natural effects that result from the rectilinear propagation of light are the formation of Shadows and Eclipse.
Define 1 pascal pressure
Answer:
Hey mate....
Explanation:
This is ur answer.....
A pascal is a pressure of one newton per square metre, or, in SI base units, one kilogram per metre per second squared. For example, standard atmospheric pressure (or 1 atm) is defined as 101.325 kPa. The millibar, a unit of air pressure often used in meteorology, is equal to 100 Pa.
Hope it helps you,
mark me brainliest plz.....
Follow me! :)
pascal is the SI unit of pressure symbolized by Pa
1 Pa=1N/m^2
1Pa=1kg/ms^2
What are the subsystems of a machine that pops a balloon?
Answer:
The answer is simple machine!!
An 1876 N crate is being pushed across a level force at a constant speed by a force of 747 N. What is the coefficient of kinetic friction?
0.16
0.40
0.08
not enough information
The crate only moves horizontally, so its net vertical force is 0. The only forces acting in the vertical direction are the crate's weight (pointing downward) and the normal force of the surface on the crate (pointing upward). By Newton's second law, we have
∑ F (vertical) = n - mg = 0 → n = mg = 1876 N
where n is the magnitude of the normal force.
In the horizontal direction, the crate is moving at a constant speed and thus with no acceleration, so it's completely in equilibrium and the net horizontal force is also 0. The only forces acting on it in this direction are the 747 N push (pointing in the direction of the crate's motion) and the kinetic friction opposing it (pointing in the opposite direction). By Newton's second law,
∑ F (horizontal) = 747 N - f = 0 → f = 747 N
The frictional force is proportional to the normal force by a factor of the coefficient of kinetic friction, µ, such that
f = µn → µ = f / n = (747 N) / (1876 N) ≈ 0.398188 ≈ 0.40
Distance is best described as
Please help!!!!
Answer:
How much an object has moved
in desert the day are very hot and night are very cold ,why?
Answer:
Sand doesn't hold heat well. The sun heats up the ground during the day and when night comes along, the sand loses all it's heat
If C is the vector sum of A and B, C = A + B, What must be true if C = A + B?. What must be true if C = 0?.
Kevin has lived in a new apartment for 30 days. He realizes his back patio light has been on the entire time. The patio light used 100 watts of power for 720 hours. The cost of each kilowatt hour is $0.12. How much money has the patio light cost Kevin?
Answer:
$8640
Explanation:
kwh = P×t...................... Equation 1
Where P = power in watts, t = time in hours.
From the question,
Given: P = 100 Watts, t = 720 hours
Substitute these values into equation 1
Therefore,
The total kilowatt hour used by the patio light = 100×720
= 72000 kwh.
From the question,
If, 1 kwh ⇒ $0.12,
Then, 72000 kwh ⇒ $(0.12×72000)
= $8640
Hence, the patio light cost kevin $8640
What happens to the electrical force if the distance increased by 4 times
A.) 4x the force
B.) 1/4 of the force
C.) 1/16 of the force
D.) 40x the force
separate sheet of paper for your answer.
1. A natural hazard that is triggered by a prolonged, heavy rainfall or by other
sources of water which increases the water content of the slope materials
A. Earthquake B. Landslides C. Sinkhole D Volcanic eruption
one carbonate
Answer:
I think its B. Please keep in mind that I could be wrong.
Explanation:
What combination of things happen on earth that helps make wind, and the weather on earth? (Please list at least two factors, and explain the best you can!)
Answer:
There are six main components, or parts, of weather. They are temperature, atmospheric pressure, wind, humidity, precipitation, and cloudiness. Together, these components describe the weather at any given time. These changing components, along with the knowledge of atmospheric processes, help meteorologists—scientists who study weather—forecast what the weather will be in the near future.
How do humans impact the carbon cycle?
Answer:
Human activities have a tremendous impact on the carbon cycle. Burning fossil fuels, changing land use, and using limestone to make concrete all transfer significant quantities of carbon into the atmosphere. ... This extra carbon dioxide is lowering the ocean's pH, through a process called ocean acidification. Humans create horrible pollution, making climate change.
