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Questions (570)
Which list correctly orders effort (E), fulcrum (F), and load (L) for each lever class?(1 point)
Responses class 1 = L, F, E (or
3 answers
142 views
How do simple machines make work easier?(1 point)
Responses They magnify the force being applied, thereby decreasing the work
3 answers
66 views
A person using a lever applies 98 Newtons to lift a 20-kilogram box. They apply the force over a distance of 4 meters to lift
3 answers
53 views
A person is lifting a heavy box using a lever. What is the purpose of the lever in this situation?(1 point)
Responses to reduce
3 answers
148 views
Use the image of a person lifting a boulder with a lever to answer the question.
An illustration shows a man using a stick and a
3 answers
70 views
In which situation did the car achieve the greatest efficiency? (Assume the cars all have the same mass.)(1 point)
Responses a
3 answers
131 views
Use the table to answer the question.
Machine Output Work (J) Input Work (J) A 750 1,500 B 1,000 4,000 C 450 600 D 3,000 5,000
3 answers
133 views
How does a pulley make work easier when it is used to lift an object?(1 point)
Responses It increases the amount of work produced
3 answers
85 views
A certain lever system is only 30% efficient. What could make it more efficient? (1 point)
Responses Use it with a lighter load
3 answers
72 views
What is the efficiency of a ramp if 2,000 joules of energy results in 1,200 joules of work?(1 point)
Responses 60% 60% 32% 32%
3 answers
61 views
Which statement is true about transitions?(1 point)
Responses Transitions can make writing unclear to the reader. Transitions can
3 answers
41 views
Which of the following transition words signals cause-and-effect?(1 point)
Responses however however first first as a result as a
3 answers
49 views
Use the sentence to answer the question.
At first, Susie did not want to go to the party because her friends were not going.
3 answers
54 views
Which transition word signals a contrast?(1 point)
Responses however however eventually eventually finally finally because
3 answers
49 views
Use the following sentence to answer the question.
Mike kept begging his parents for a cell phone. They agreed he could use his
3 answers
55 views
Human hair grows at a rate of about 6.849×10−4 cm per hour to 2.329×10−2 cm per hour. The rate depends on gender,
3 answers
250 views
Find 0.078−(5.2×10−3) . Express your answer in scientific notation. Do not round your answer.(1 point)
3 answers
137 views
Earth’s radius is approximately 3,959 miles, while Jupiter’s radius is approximately 4.3441×104 miles. How much bigger is
3 answers
131 views
Earth’s radius is approximately 3,959 miles, while Jupiter’s radius is approximately 4.3441×10^4 miles. How much bigger is
3 answers
39 views
Subtract 4.66×10−5−7.34×10−7(1 point)
Responses −2.68×102 negative 2.68 times 10 squared −4.5866×10−5 negative
3 answers
175 views
The U.S. national debt was $2.9617×1013 in 2021 and $3.98×1011 in 1971. Find how much the debt increased in the 50-year
3 answers
56 views
The size of a hydrogen atom is about 1.2×10−10 m across. The size of an oxygen atom is 0.000000000152 m across. What is the
3 answers
45 views
Platelets and red blood cells are components of the blood. A typical platelet and red blood cell have diameters of approximately
3 answers
46 views
China and India are the most populous countries in the world. China’s population is approximately 1.45×109 , while India’s
3 answers
110 views
Use the sentence to answer the question.
Many nice plants filled the hotel lobby. Which word could replace nice to add more
3 answers
53 views
Using Precise Language Quick Check
2 of 52 of 5 Items Question Use the sentence to answer the question. Some animals are
3 answers
72 views
Use the paragraph to answer the question.
Dear Hiring Manager, I am applying for the position of summer cashier. I learned about
3 answers
58 views
Use the sentence to answer the question.
The mechanic said the car needed some brake things replaced. Which words can replace the
3 answers
56 views
In which situation is it appropriate to write using informal language?(1 point)
Responses a scientific research article a
3 answers
70 views
Use the diagram to answer the question.
An illustration shows a wave with a horizontal distance between two consecutive troughs
3 answers
87 views
Two students hold the ends of a jump rope. One student moves the jump rope up and down, making a wave. Then, the student moves
3 answers
79 views
Two students hold the ends of a jump rope. One student moves the jump rope up and down, making a wave. Then, the student moves
3 answers
161 views
Use the table to answer the question.
Student Wavelength Frequency Darius increase increase Kathryn increase remain the same Anya
3 answers
138 views
A term for the top-most point of a wave is the _____(1 point)
Responses trough. trough. frequency. frequency. crest. crest.
3 answers
137 views
Which term describes the resting position of a wave?(1 point)
Responses equilibrium equilibrium frequency frequency amplitude
3 answers
134 views
write how the civic virtues of ancient Romans inspired the Founding Fathers’ vision on how citizens should conduct themselves
3 answers
42 views
SUMMARIZE
The civic virtues of ancient Romans served as a significant source of inspiration for the Founding Fathers in
3 answers
44 views
So long as any individual state has power to defeat the measures of the other twelve, our pretended union is but a name, and our
3 answers
73 views
The weight of an ant averages about 3×10−6 kg. There are about 1×1016 ants in the world. What is the approximate weight in
3 answers
126 views
The average human heart beats about 3.5×107 times per year. The current population of Massachusetts is about 7×106 people.
3 answers
239 views
The average newborn weighs 7.5 pounds. About 4.1×106 babies are born in the United States every year. What is the approximate
3 answers
178 views
What is 5.5×10^4 multiplied by 2.2×10^−8 ? Write the answer in scientific notation.(1 point)
Responses 1.21×10−4 1.21
3 answers
17 views
When multiplying two numbers in scientific notation, what operations do you use on the coefficients and the exponents of the
3 answers
86 views
A tape dispenser holds 1.14×104 mm of tape that is 12.7 mm wide. Multiply the two numbers to find the total area in square
3 answers
84 views
A sugar cube has a volume of about 4.9 ml. What is the total volume in milliliters of 1.5×10^6 sugar cubes?(1 point)
Responses
3 answers
35 views
Multiply 0.75 by 2.8×10^−5
.(1 point) Responses 2.1×10−5 2 point 1 times 10 to the negative 5 power 2.1×10−7 2 point 1
3 answers
74 views
An average American household uses about 1.04×104 kWh (kilowatt hours) of electricity a year. If a power station generates
3 answers
91 views
There are about 1.6×103 meters in a mile. About how many miles are there in 3.52×107 meters? Write your answer in scientific
3 answers
51 views
There are about 1.6×10^3 meters in a mile. About how many miles are there in 3.52×10^7 meters? Write your answer in scientific
3 answers
103 views
An online data storage facility has 1.326×1013 bytes of storage available. It has 2.6×104 customers. How many bytes of storage
3 answers
55 views
An online data storage facility has 1.326×10^13 bytes of storage available. It has 2.6×10^4 customers. How many bytes of
3 answers
207 views
A public aquarium is being built to contain neon tetras. Each neon tetra needs 1.25 gallons of water. The aquarium will contain
5 answers
80 views
A feather weighs 0.0082 g. How many feathers would you need to make a weight of 4.1×10^3 g? Write the answer in scientific
3 answers
256 views
A rectangular park has an area of 1.36×10^8 ft2 . The length of the park is 1.6×10^4 ft. Divide the area by the length to find
3 answers
84 views
Divide 3.3×10^4 by 5.5×10^7
.(1 point) Responses 6×10−5 6 times 10 to the negative 5 power 6×10−3 6 times 10 to the
3 answers
32 views
A city lunch program for seniors received a grant of 1.925×10^6 dollars. Divide that figure by the cost of $2.75 per lunch to
3 answers
38 views
Solomon needs to distribute 10.5 gallons of perfume among 3.5×10^2 containers. How many gallons of perfume will be in each
3 answers
91 views
A large pavilion is made of 2.967×10^5 bricks. There are 6.9 bricks per square foot. How many square feet is the pavilion?
3 answers
42 views
Which of the following describes one of the tasks of a good conclusion?(1 point)
Responses summing up the passage summing up the
3 answers
53 views
Which of the following statements describes a good conclusion?(1 point)
Responses A good conclusion refers to the major themes of
3 answers
40 views
A friend asks Samantha to help write a conclusion for her essay. What should Samantha do first?(1 point)
Responses Find synonyms
3 answers
48 views
Anike wrote an article on how to make lentil soup.
Which of the following would make the best conclusion to the article? (1
3 answers
46 views
Which type of wave is most affected by gravity from the Sun and the moon?(1 point)
Responses seismic seismic sound sound water
11 answers
343 views
Use the following performance excerpt to answer the question.
Listen to this excerpt from Beethoven’s Fifth Symphony. Which of
7 answers
77 views
What do the 15th, 19th, and 26th Amendments have in common?
(1 point) Responses voting rights voting rights religious rights
5 answers
104 views
Use the image to complete the statement.
In wave A, the wave goes a certain distance above and below the horizontal line and
3 answers
90 views
When drawn on a coordinate plane with the x-axis as the baseline, a wave with a crest that is closer to the baseline has a
3 answers
41 views
Use the table to answer the question.
Wave λ (m) vw (m/s) L 120 600 M 150 600 N 100 600 O 50 600 The table shows information
3 answers
88 views
A student moves the end of a compressed coiled spring up and down to demonstrate wave motion. She then moves the compressed
3 answers
126 views
For what value of a will 8×10^3 be 40 times larger than a×10^2 ?(1 point)
5 answers
50 views
One second is approximately 0.0000115741 of a day. What is this number in scientific notation?(1 point)
25 answers
224 views
The temperature of the sun at its center is about 2.7×107 degrees Fahrenheit. What is this temperature written in decimal
3 answers
186 views
Place the numbers in descending order.
2.3 × 10^−10 ; 3.2 × 10^−10 ; 2.3 × 10^−12 ; 2.3 × 10^−8 (2 points)
3 answers
21 views
Janiya found that her playlist will play for 3.8×102 seconds, 6.3¯¯¯ ×10^5 minutes, 1.05¯¯¯¯¯ ×10^4 hours, or
3 answers
254 views
The distance from Venus to the sun is about 67,000,000 miles. The distance from Earth to the sun is about 2.6×107 farther. What
3 answers
159 views
A strand of hair has an average mass of 2.17×10−5 ounces. A grain of rice has an average mass of 0.002 ounces. How much
15 answers
239 views
A strand of hair has an average mass of 2.17×10^−5 ounces. A grain of rice has an average mass of 0.002 ounces. How much
5 answers
asked by
Answer
471 views
An asteroid is heading toward Mars at the rate of 7.7*10^4 mi./hr. If the asteroid is 3.311*10^8 miles away from Mars, how many
3 answers
80 views
Charlee is using her calculator to find the product of two large numbers. Her calculator shows 1.78E12 on the display. Interpret
3 answers
111 views
The temperature of the sun at its center is about 2.7×10^7 degrees Fahrenheit. What is this temperature written in decimal
3 answers
216 views
A national park covers an area of 1.42×10^6 acres. A nearby national forest covers an area of 1.2×10^6 acres. What is the
3 answers
215 views
The distance from Venus to the sun is about 67,000,000 miles. The distance from Earth to the sun is about 2.6×10^7 farther.
3 answers
75 views
A field of 3.9 mi^2 is being subdivided into 1.3×10^3 family gardens. How many square miles will there be in each garden? Write
3 answers
25 views
Which graphic would be best to accompany an article about the different agricultural regions of California?(1 point)
Responses a
3 answers
130 views
A ringing alarm clock is put under a glass jar. The air is slowly removed from the space around it. What will happen as the air
3 answers
81 views
How are mechanical waves defined?(1 point)
Responses They are waves that involve matter, rather than energy, moving from one
3 answers
40 views
Where do sound waves travel faster?(1 point)
Responses through less dense materials, because the molecules in a loosely packed
3 answers
155 views
The retina of the eye has rods and cones which play a crucial function in sight. Which statement explains how rods and cones
3 answers
55 views
The American flag flies on a black flagpole. Light from the sun hits the flag and the flagpole. How is it that you can see the
3 answers
145 views
How does one become a citizen? Select all that apply.
(1 point) Responses A person is born in the United States. A person is born
11 answers
122 views
Use the following audio sample to answer the question.
Identify which chord is the major chord. (1 point) Responses first chord
3 answers
87 views
What note completes the major triad with the root A?
Notation shows an A and C-sharp on the treble clef. (1 point) Responses A A
5 answers
82 views
Which statement best describes the reflection of a wave?(1 point)
Responses A wave fails to reach the surface of a material. A
7 answers
110 views
Add 2–√8+3–√ 8.(1 point)
3 answers
77 views
Add 31−−√+31−−√ .(1 point)
3 answers
35 views
Subtract 75–√−45–√ .(1 point)
The difference is .
3 answers
31 views
Subtract 75–√ − 45–√ .(1 point)
The difference is .
3 answers
19 views
Subtract 29−−√−29−−√ .(1 point)
The difference is .
3 answers
90 views
The tiles in a store are being compared. The diagonal of one tile is 92–√ centimeters, and the other tile is 82–√
7 answers
147 views
Add 321−−√ + 721−−√ .(1 point)
Responses 1021−−√ 10 Start Root 21 End Root 24 −−−√ + 28−−√ Start
3 answers
104 views
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