A student drops a tennis ball from the top of a building as shown in the picture air resistance is negligible. Explain how the student can determine the height of the building if the kinetic Energy of the tennis ball is known when it hits the ground. And your explanation use the terms kinetic energy, gravitational potential energy, acceleration due to gravity mass and height
We can use potential energy to solve. Remember, your height and your gravity need to have the same sign, as they are moving in the same direction (downward). Either make them both negative, or use an absolute value.
Using conservation of energy, we know that PEtop=KEbottom. This tells us that the potential energy at the top of the hill is all converted to kinetic energy at the bottom of the hill. We can substitute the equations for potential energy and kinetic energy.
mgh=12mv2
The masses cancel out.
gh=12v2
Plug in the values, and solve for the velocity.
If earth were smaller than it is, but the alexandria-to-syene distance were the same, would the shadow of the vertical pillar in alexandria be longer or shorter at noon during the summer solstice
Answer:If the the Earth were smaller than it is and the Alexandria-to-Syene distance were the same, the shadow of the vertical pillar in Alexandria would be longer.
Explanation:Hope this answers your question
If the Earth were smaller and the distance between Alexandria and Syene was similar, the silhouette of the vertical pillar in Alexandria would be longer.
How was the distance between Alexandria and Syene?Eratosthenes then measured the angle of a shadow produced by a stick at midday on the summer solstice at Alexandria and discovered it was around 7.2 degrees or 1/50 of a complete circle. He reasoned that if he knew how far Alexandria was from Syene, he could simply calculate the circumference of the Earth.
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Classify each of the following cloud types as low-level, medium-level, or high-level.
Altocumulus
Altostratus
Cirrocumulus
Cirrus
Cumulus
Nimbostratus
Stratus
Altocumulus - medium-level
Altostratus - medium-level
Cirrocumulus - high-level
Cirrus - high-level
Cumulus - low-level
Nimbostratus - high-level
Stratus - low-level
Answer:
It is D.Explanation:
nimbostratusHope this helps
Which text is followed by Muslims but not by Christians?
A. The Old Testament
OB. The New Testament
O C. The Torah
O D. The Quran
Answer:
d. the Quran
Explanation:
it is the holy text of Islam
Which country has the largest concentration of glaciers in the alps?.
Answer:
Explanation:
Aletsch Glacier Location in Switzerland Show map of Switzerland Show map of Alps Show all
Type Valley glacier
Location Valais, Switzerland
6- Circle the correct questions.
On visit to tell Coast of Florida , Steve will see the
a- Atlantic Ocean
b- Arctic Ocean
C- India Ocean
d- Pacific Ocean
Answer:
A
Explanation:
how do we write data collection
Answer:
You can make it in a chart or graph after you find out all the data you need.
What part of the solar system is associated with the name solis dies
Answer:
This name resulted from the Germanic interpretation of Latin dies solis, which is itself a translation of the Greek heméra helíou.
North Korea is a part of what climate zone?
Answer:
North Korea actually contains two climate zones. The northern part of North Korea has a temperate climate, while the southern part of North Korea has a subtropical climate.
how to reduce damage and loss of life and property during earthquakes.
Answer:
How to Prevent Earthquake Damage
1. Secure your belongings. The largest financial loss you can incur during an earthquake will be from falling objects and overturned furniture.
2. Put latches on cabinet doors and file cabinets. During an earthquake doors and drawers can come open.
3. Fasten your water heater and other appliances. Secure your water heater to wall studs.
4. Store hazardous materials in a sturdy place. Mixing or spilling chemicals can be dangerous.
5. Keep fire extinguishers. Place them throughout your home in the event you need them.
Explanation:
Answer:
ANCHOR OR RELOCATE TOP-HEAVY OR LARGE OBJECTS Take the time to anchor top-heavy or large furniture, like bookshelves or wardrobes, to prevent them from falling over during an earthquake. If they can't be anchored, move them to areas of the home where they are less likely to cause injuries if they fall.
hope this helps!
A person is lost and needs to go south. how might a magnetic compass help the person?
Answer:
The compass always points north. One can use this to know which direction North is, and therefore, in which direction south is, since south is directly opposite of north.
The compass always points north. One can use this to know which direction North is, and therefore, in which direction south is, since south is directly opposite of north.
What is a compass?A compass is a device used for navigation and geographic orientation that displays the cardinal directions. It is often made up of a magnetized needle or another device, such as a compass card or compass rose, that may swivel to align with magnetic north.
The needle on the compass always points north. This may be used to determine which direction North is, and hence which way South is, because south is precisely opposite north.
The needle on the compass always points north. This may be used to determine which direction North is, and hence which way South is, because south is precisely opposite north.
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Gold was deposited into earth’s crust billions of years ago by what?.
Find the center and radius of the circle given by this equation: x2−10x+y2+6y−30=0
What two narrow waterways located at the west end of the anatolian peninsula.
Answer:
Bosporus Strait & Dardanelles
Explanation:
those are the only two i can think of
Melting of sea ice contributes more to sea level rise than does melting of ice on land-based ice sheets because:
The Great Lakes are experiencing lower water levels and higher water temperatures. This situation shows the impact of which environmental issue?
What are the greatest ecological threats of our century?
changes in land and sea use; direct exploitation of natural resources; climate change; pollution and invasive species. these are some of them
Hill station located in the alps in western austria.
Answer:
Tyrol
I hope this helps
Hill station located in the alps in western Austria is called Tyrol.
What is Hill station?
A town known as a hill station is one that is situated higher up than the neighboring plain or valley.
For towns established by European colonialists as escapes from the summer heat, the term "hill station" was most commonly used in colonial Asia, though it was also used in Africa.
Dale Kennedy notes that in the Indian context, "the hill station was seen as an exclusive British preserve: here it was possible to render the Indian into an outsider."
The majority of hill stations in India, which has the most of them, are located at an elevation of between 1,000 and 2,500 meters.
High refuge, high refuge to hill station, and hill station to town are the three stages Kennedy, following Monika Beuerlein, believes the development of hill stations in India went through.
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Volcanologists and seismologists are specialized
Answer:
Volcanologists study active volcanoes and get down and dirty with ash. They even experiment with red hot lava! Seismologists study earthquakes from fault to devastation.
Explanation:
What governmental group voted to keep the US out of the League of Nations?
Answer:
Explanation:
The League of Nations was established at the end of World War I as an international peacekeeping organization. Although US President Woodrow Wilson was an enthusiastic proponent of the League, the United States did not officially join the League of Nations due to opposition from isolationists in Congress.
It was motivated by the republican group.
16. What are the two classes of
pure substances?
A. Atoms and molecules
B. Solutions and mixtures
C. Liquids and gases
D. Elements and compounds
Answer:
B and C
Explanation:
so so soryy if im wrong
Explanation:
I guess the answer is B and D
from which I know, D is for sure
locations on earth where significant hominid fossil finds occur
Answer:
4 locations on earth where significant hominid fossils find occur are
-Dali,China
-Kanapoi, Kenya
-Aramis, Ethiopia
-Feldofer, Germany
The italian alps have one of the world’s largest collections of what?.
Answer:
Cows
Petroglyphs
Rivers
Trees
Mountains?
Explanation:
In Camonica valley, located in Italy’s eastern Alps, visitors can find one of the world’s largest collections of prehistoric petroglyphs. The site is called Valcamonica and stretches for 56 miles across the valley. More than 2,500 rocks are carved with up to 300,000 symbols, animals, scenes, and drawings. Valcamonica was added to UNESCO’s World Heritage list in 1979.
Why do you think that people across the region practice many of the same customs?
Answer:
Common Ancestry
Explanation:
This may be because they share a common ancestry or maybe should I say background so they tend to practice the same customs and traditions
What is the only state that has a one-syllable name?.
Answer:
Maine is the only U.S. state with a single syllable.
What is the difference between the Geocentric and Heliocentric models of the Solar System and which one is correct?
Answer:
Are there any options, hints, or anything like that?
What physical feature is labeled in green on the map?
Question 2 options:
African Savanna
African Rainforest
Sahara Desert
Sahel
Answer:
The answer Answer is simple: It's the African Rainforest.
When does the northern hemisphere receive the fewest direct rays from the sun? during the fall equinox during the winter solstice during the spring equinox during the summer solstice
During the winter solstice, the northern hemisphere receives the fewest direct rays from the sun.
What part of the Northern Hemisphere gets the fewest direct solar rays?The Northern Hemisphere's winter season begins on December 21 or 22, when the North Pole has inclined 23.5 degrees away from the sun.
The winter solstice occurs on this day. The sun is at its lowest angle, and the Northern Hemisphere receives the least amount of daylight.
Therefore, option (b) or (ii), during the winter solstice, is the correct answer.
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Answer:
during the winter solstice
Explanation:
Which of the following words describes children who are physically
conceived by the parents who raise them?
A. Extended
B. Blended
C. Biological
D. Multigenerational
Answer:
C.
Biological
Your birth parents are known as your biological parents.
__________ lines are used to measure east and west.
Longitude
Scale
Latitude
Relative
Answer:
Longitude lines are used to measure east and west.
Answer:
Longitude
Explanation:
because north and south is latitude