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

the correct answer is A: is destroyed

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

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?

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

Explain how crust density is related to ocean trench.

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

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

What kingdom (Plantae, Fungi, Animalia, or Protista) does each organism belong to? (no links)

Help please ‍♀️ I’m stuck

plz answer the question in the image below
(really its 8th grade science but they don't have that)

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

When sodium and chlorine are mixed:

nothing happens
heat and light are released
heat is absorbed from the environment

Mixing chemicals in a cold pack creates a reaction that:

absorbs heat
destroys heat
releases cold
none of the above

When light energy hits matter, _____ energy is formed.
A Heat
B Mechanical
C Potential

A behavior that is developed by observing others or being taught is
Inherited Traits

Inherited Function

Learned behavior

Characteristic

Which of the chemical equations below is properly balanced???

Which of the following equations represents an acid base reaction?

As a Sun-sized star dies, it puts on an exquisite show, shedding its outer layers into space. How long does this process last?
Thousands of years
Billions of years
Millions of years
An unknown amount of time

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

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

what are the 27 vawels

Which of these diagrams is a convex mirror?

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

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

In 3 - 5 sentences, explain how a kitten with black stripes received this trait. Elaborate on the difference between genotype and phenotype.

Mixing chemicals in a cold pack creates a reaction that:

absorbs heat
destroys heat
releases cold
none of the above

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?

My kitty just past her name was winter :c

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.

Homework: What happens when you kick the bottom of the ball in soccer?​

Burning can be:

controlled for useful work
wasted for useful work
stopped for useful work