Answer:
Light waves are electromagnetic waves while sound waves are mechanical waves.
sound waves cant travel in vaccums while light wave can, hence why ppl say u can scream in space and ppl wont hear u.
I NEED THIS ASAP!!! A ball is thrown straight up with an initial velocity of 4.40 m/s. Assuming there is no air friction, what is the maximum height the ball will reach? 40pts pls
Answer:
I think it is 80m/s
Explanation:
d = ½ g t2
= ½ (10 m/s2) (4 s)2
= (5 m/s2) (16 s2)
= 80 ms
75% sure
Hope this helps!!!
What is the flaw with using apparent brightness rather than absolute brightness to determine the brightness of a star?
Apparent brightness does not use the star's color or temperature.
Apparent brightness does not take into account the distance of the star from Earth
Apparent brightness is only theoretical, its value cannot be directly measured with equipment
Apparent brightness is only on a comparative scale that determines how bright a star looks from a theoretical distance of 10 parsecs
from Earth.
Don’t answer if you’re just going to put a link or file.
Help if you know and are sure
Answer:
Apparent brightness is only on a comparative scale that determines how bright a star looks from a theoretical distance of 10 parsecs
from Earth.
which of the following has the most kinetic energy
A: stretching a rubber band
B: a jet flying through the air
C: trowing a paper airplane
D: pitching a baseball
Answer:
D pitching a ball
When sodium and chlorine are mixed:
nothing happens
heat and light are released
heat is absorbed from the environment
The correct answer is B: heat and light are released.
plz answer the question in the image below
(really its 8th grade science but they don't have that)
If someone lifts less weight than you, explain why that person could be considered more powerful.
Answer:
there faster
Explanation:
stronger,wiser,better,THEY ARE BETTTEEEEEEEERRRRRRRR
Answer:
they're so strong that they don't need to lift heavy weights anymore because they're experts (slay lol). so they just have a simple daily workout.
A behavior that is developed by observing others or being taught is
Inherited Traits
Inherited Function
Learned behavior
Characteristic
Which of the following equations represents an acid base reaction?
Answer:
the second one
Explanation:
What kingdom (Plantae, Fungi, Animalia, or Protista) does each organism belong to? (no links)
Answer:
Plantae: herbs, plants, trees, bushes, grass....
Fungi: yeasts, molds, mushrooms
Animalia: all animals (not prokaryotes nor protists)
Protista: amoebae, red algae, dinoflagellates, diatoms, euglena, and slime molds
Answer:
Plantae: Kingdom Plantae
Fungi: Kingdom Eukarya
Animalia: Kingdom Metazoa or Animaliaanimals
Protista: Kingdom Protista
Explanation:
Kingdom Plantae includes familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae.
The Kingdom Fungi belongs to the domain Eukarya and it includes at least 11 separate groups
All animals are members of the Kingdom Animalia, This Kingdom does not contain prokaryotes or protists
Protists are eukaryotic organisms put simply, protists are all the eukaryotes that are not animals, plants, or fungi.
Give an example for each of the following energy conversion:
(1) electrical energy to kinetic energy.
(2) chemical energy to electrical energy
ANSWER:
(1) Electric motors
(2) Batteries
Which of the following will most likely be a sustainable environment?
A. An environment with a small variety of plants and animal species
B. An environment with a large variety of plant and animal species
C. An environment with many plant species but with only a few animal species
D. An environment with many animal species but with only a few plant species
Answer:
I think A
Explanation:
The three basic economic questions societies face are (1) what goods and services to produce, (2) how to produce those goods and services, and (3) who will get them.
In one or two paragraphs, explain how supply and demand help societies determine their answers to these three questions. Be sure to provide an example of the effect of supply and demand on a society's answers.
please help
When supply is high is the people don’t want it as much. When the supply is low people most likely want It. Demand is just basically controlled by the people.
Supply and demand let's us know what needs to be more produced and what needs to be less produced. For example, the demand for a TV will be high, but the demand for paper might be low. So the company will produce more TVs and less paper because the Supply and demand tells them that the people want TVs. When supply is high the people don’t want it as much but the supply is low people most likely want It. Demand is just basically controlled by the people.
Which of these diagrams is a convex mirror?
Answer:
Which of these diagrams is a convex mirror?
Explanation:
iT was the first pic..edge 2021
Answer:1st one
Explanation:
Right on edge
Sam has 3/4 of a can of the hot chocolate mix for drinks to keep everyone
warm. To make a cup of hot chocolate, Sam adds hot water to one
scoop of hot chocolate mix. The scoop holds 1/24 of a can. How many cups of hot chocolate can Sam make?
Speak fast
Mixing chemicals in a cold pack creates a reaction that:
absorbs heat
destroys heat
releases cold
none of the above
The energy of a machine that is transformed into heat:
is destroyed
can always be used for additional work
usually cannot do any further work
can be transformed back into mechanical energy
Answer:
can be transformed back into mechanical energy
Explanation:
energy never is destroyed it created, just transformed
Explain how crust density is related to ocean trench.
6. When green, blue and red lights flash together what color do you see?
7A. ____________________ means to bounce off, and ____________________ means to take in or soak in .
7B. When no light was reflected from the object to your eyes, what color did you see? __________________________
7C. In order for you to see anything, _____________________ has to reflect (bounce) from the object to your eye.
7D. A red card reflects ________________________ back to your eyes and absorbs what colors?
Answer:
6. When green, blue and red lights flash together what color do you see? White.
7A. __Reflect________ means to bounce off, and _____absorb________ means to take in or soak in .
7B. When no light was reflected from the object to your eyes, what color did you see? ____Black_____________
7C. In order for you to see anything, ___light_______ has to reflect (bounce) from the object to your eye.
7D. A red card reflects ____red__________ back to your eyes and absorbs what colors? Blue and green.
Explanation:
hope this helps :)
1. Sketch a picture of the components of a galaxy. Write the name of our galaxy as the title of your drawing.2. Investigation3. Ervin is a current 5th grade student. One weekend he went on a trip to the beach with his family. After arriving at the beach, his mother put sunscreen on him to protect him from the Sun. Ervin and his older brother decided to go swimming in the ocean. While swimming his brother pointed out how large the Sun appeared. Later in the day, the Sun was covered up by dark clouds. When the Sun got covered, Ervin decided to stop swimming.At school on Monday, Ervin’s class was learning about the Sun. Ms. Chabert, his teacher, posed 3 questions to the class. Ervin was excited because he was able to use what he learned about the Sun at the beach to answer each question correctly. Use what YOU know about the Sun to answer the questions that Ervin’s teacher posed to the class. Answer in complete sentences please.A. Is the Sun a star?B. Why does the Sun appear large and bright?C. Is the Sun the largest star in the sky?D. What types of energy does the Sun give off?E. How does energy help us on a daily basis?
Which statement would be an example of a climate report for Texas?
a. The average annual temperature in San Antonio is 20°C.
b. There is a good chance that severe thunderstorms will move through Dallas late tonight.
c. Tomorrow will be the hottest day of the year for residents of Houston.
d. People in Galveston can expect the temperature to drop into the low 60s later in the week
Burning can be:
controlled for useful work
wasted for useful work
stopped for useful work
Answer:
Controlled for useful work
Explanation:
In 3 - 5 sentences, explain how a kitten with black stripes received this trait. Elaborate on the difference between genotype and phenotype.
What is a bright streak of light that results from a space rock burning in earth’s atmosphere?
A.
Meteor
B.
Asteroid
C.
Meteorite
D.
Meteoroid
Answer:
A
Explanation:
A meteor is a streak of light in the sky caused by a meteoroid crashing through Earth's atmosphere. Meteoroids are lumps of rock or iron that orbit the sun. Most meteoroids are small fragments of rock created by asteroid collisions. Comets also create meteoroids as they orbit the sun and shed dust and debris.
Which of the chemical equations below is properly balanced???
Answer:
A
Explanation:
I think i could be wrong
Science Class:
Question 1: A) Which state(s) of matter have a fixed shape? B)A fixed volume?
Question 2: A) Rank the states of matter from most kinetic energy of the particles to least B) Rank from most particle spacing to least
Owen is going on a multi-day hike up a large mountain. He wants to know what clothes he should bring for the higher elevation as he hikes. What clothes should Owen bring? (2 points)
a
An umbrella, since precipitation is more common at high elevation.
b
Heavier clothes, since the higher elevation will have cooler temperatures.
c
The same type of clothes he wears normally, as the temperature will remain the same at high elevation.
d
Lighter clothes, because the higher elevation will have warmer temperatures.
Mixing chemicals in a cold pack creates a reaction that:
absorbs heat
destroys heat
releases cold
none of the above
Answer:
Absorbs heat!! Im sorry if it isn’t correct but yeah
Explanation:
Homework: What happens when you kick the bottom of the ball in soccer?
Answer:
It will move due to force.
Explanation:
Answer: You hurt your Toe :))
Explanation:
Help please ♀️ I’m stuck
Answer:
b i guess i mean i dont have much to go off of so imma say b
hope this helps have a great day :)
Answer:
Energy
Explanation:
My kitty just past her name was winter :c