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Jett
Questions (471)
a line segment is drawn from A(14,10) to B(6,4). Find the distance from A to the midpoint of the segment.
1 answer
34 views
which of the following pairs (x,y) is a solution of this system? x + y = 4 -x + 2y = -1
1 answer
26 views
Ted bought 3 books at m dollars each. The sales tax on his purchase was %5 of the cost of the books. Which of the following
1 answer
35 views
five people split the following costs equally among themselves: $12.40, $10.95, $16.75, $6.10. How much did each person pay?
1 answer
38 views
jason worked 20 hours at $5 per hour and 30 hours at $6 per hour. what was his average hourly wage?
3 answers
36 views
jorge bought 16 CDS at a cost of $9 each. how many $12 CDS could he have brought for the amount he paid?
1 answer
32 views
mark brought 14 tapes, some priced at $6 each and the rest priced at $8 each. if he spent $94 altogether, how many tapes did he
1 answer
38 views
When using a calorimeter, the initial temperature of a metal is 70.4C. The initial temperature of the water is 23.6C. At the end
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34 views
When the metal was placed in the calorimeter, its temperature dropped to the equilibrium temperature. Calculate the change in
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80 views
Calculate the change in temperature of the water in the calorimeter after each metal sample was added. Record these values in
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54 views
the volume of a cube is 27. What is the perimeter of each face?
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25 views
what is the greatest value out of 3/10, 0.03, and 2/5?
1 answer
27 views
in one town last year year there was a ratio of 1 recreational vehicle to every 2 trucks. This year there are the same number of
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45 views
five cards are labeled 0,2,4,6, and 8. two cards are picked without replacement. what is the probability that their product is
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31 views
A square with sides equal to 6 has the same area as a triangle with the base of 9. What is the height of the triangle?
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30 views
Mrs. M drove 10 minutes at 60 miles per hour, then 20 minutes at 30 miles per hour. For the rest of the hour, she drove at a
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41 views
Mount Kenya, and we Maasai still live below, herding cattle down in the plains. It’s not a bad life, especially when Enkai is
1 answer
39 views
Read the passage from "The Beginnings of the Maasai.”
Neighboring hunters from the Kamba were jealous of Neiterkob’s special
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57 views
What does the reader learn about the Maasai people from "The Beginnings of the Maasai”? Check all that apply.
They value cattle
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67 views
Who is the central character introduced in the beginning of the myth?
What major conflict is introduced in the beginning? How is
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57 views
Write a hypothesis for Part II of the lab, which is about the type of material an object is made of, and its ability to absorb
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65 views
Write a hypothesis for Part I of the lab, which is about the effect of mass on the ability of an object to absorb or release
1 answer
40 views
In this experiment, you need to examine the idea of thermal energy transfer. Using a controlled experiment, what might a good
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42 views
The giant Pangu formed inside an egg and grew safely inside for eons. He finally grew too large for the egg, and it cracked
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72 views
Apsu, the god of fresh water, and Tiamat, the goddess of salt water, bore a son named Lahmu and a daughter named Lahamu. These
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150 views
Apsu, the god of fresh water, and Tiamat, the goddess of salt water, bore a son named Lahmu and a daughter named Lahamu. These
1 answer
49 views
Ea called on Marduk, a great warrior god, saying that if Marduk should be victorious, he would be the lord of all the gods. A
1 answer
54 views
Ea called on Marduk, a great warrior god, saying that if Marduk should be victorious, he would be the lord of all the gods. A
1 answer
55 views
Everyone tells stories, whether they write them down or not. Why do you tell stories? Check all that apply.
to entertain others
1 answer
41 views
Vicente is going to spend the afternoon in his yard. He has the choice to get in the pool, lay on a cotton chaise longue, sit on
1 answer
37 views
The diagrams show the movement of particles for two substances.
The left image labeled X shows spaced out green balls with long
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59 views
What happens in terms of energy when a moving car hits a parked car, causing the parked car to move?
The moving car transfers
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69 views
Wood has chemical energy, which can be used to generate thermal and radiant energy when burned in a fireplace. Which best
1 answer
47 views
During nuclear fission and fusion, what is matter that seems to disappear actually converted into?
mass energy volume nuclei
1 answer
26 views
Energy can be transformed from one form to another. The diagram shows one such process.
Which energy transformation is
1 answer
41 views
Which activity directly converts energy from the Sun into chemical energy?
a snake lying on a sunny rock to keep warm a rabbit
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49 views
Explain why the roller coaster’s potential energy is greater at point 1 than at point 4.
1 answer
25 views
Which chart comes closest to the relationship between kinetic energy and potential energy at point 6?
1 answer
32 views
Click the “step” button on the simulation to observe the energy at different points on the roller coaster ride. Use the
1 answer
55 views
Go to the roller coaster simulation and click on the “launch” button. Pay attention to the pie chart as the roller coaster
1 answer
30 views
When you view the pendulum’s swing, it shows that at the very top of the swing KE = 0. What does that tell you about the
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33 views
A stand shows a pendulum in 5 positions. A has the pendulum bob at a 45 degree angle to the left. C has the pendulum bob
1 answer
56 views
A 17 kg box sitting on a shelf has a potential energy of 350 J. How high is the shelf? Round your answer to the nearest whole
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55 views
A yellow ball with a mass of 2 kg is rolling across the floor at 3 m/s. A red ball with a mass of 3 kg is rolling across the
1 answer
38 views
found in the flow of electric charges is a what
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30 views
found in nucleus of an atom is a what
1 answer
24 views
found in bonds between atoms is a what
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39 views
found when internal energy is transferred is called a what
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23 views
Which statements describe kinetic and potential energy? Check all that apply.
Energy can be stored in the position of an object.
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56 views
energy stored in a compressed or stretched object is a
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37 views
energy of an object because of its height above a surface is a
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33 views
In the top row labeled Before Collision, the left billiard ball labeled 3 meters per second approaches the right billiard ball
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43 views
A skateboarder throws a ball away from himself.
If the action force is the boy pushing on the ball, what is the reaction force?
1 answer
50 views
In the top row labeled Before Collision, two train cars approach one another with a grey arrow pointing to each car. The left
1 answer
44 views
Complete the statements about the law of conservation of momentum.
The law of conservation of momentum states that the total
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70 views
Two objects with different masses and different velocities have the same momentum. What must be true of the velocity of the more
1 answer
66 views
The acceleration due to gravity for any object, including 1 washer on the string, is always assumed to be
m/s2. The mass of 3
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58 views
If you know the force applied to an object and measure its acceleration, which equation would you use to calculate the
1 answer
50 views
The average time that it takes for the car to travel the first 0.25m is
s. The average time to travel just between 0.25 m and
1 answer
58 views
If each washer has a mass of 4.9 g, then the mass of two washers in kilograms would be
. Given that F = ma, and if 4 washers are
1 answer
71 views
A image of a drag race car has long arrow A pointing up, medium length arrow B pointing down, medium length arrow C pointing
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71 views
What is the average velocity of the car over the first 0.25m?
m/s What is the average velocity of the car over the second 0.25m?
1 answer
27 views
Different measurements are expressed in different units. Choose the correct SI units for the following types of measurement.
The
1 answer
61 views
In Part I of this experiment, the
was intentionally manipulated. This was the independent variable. The dependent variable
1 answer
43 views
Calculate the acceleration of the car for each set of conditions using the formula
a = (v2 – v1) / (t2 – t1) where v2 and v1
1 answer
36 views
Calculate the first and second velocities of the car with two washers attached to the pulley, using the formulas
v1 = 0.25 m /
1 answer
83 views
Calculate the first and second velocities of the car with one washer attached to the pulley, using the formulas
v1 = 0.25 m / t1,
1 answer
49 views
Calculate the gravitational force on the washers using the formula
F = ma where a = 10 m/s2 and m is the mass of the washers. Use
1 answer
65 views
Calculate the applied force of the washers on the car. First, convert the mass you recorded for one, two, three, and four
1 answer
59 views
Calculate the average time it took the car to travel 0.25 and 0.50 meters with three washers attached to the pulley. Record the
1 answer
137 views
Calculate the average time it took the car to travel 0.25 and 0.50 meters with two washers attached to the pulley. Record the
1 answer
61 views
Calculate the average distances the car and the washer traveled from the top of the track. Record the averages and your
1 answer
53 views
Calculate the average distances the car and the washer traveled from the top of the track. Record the average in Table A of your
1 answer
64 views
Step 1: Gather Materials
On top, three washers labeled three washers, a ball of string labeled 1 meter of string, a timer labeled
1 answer
67 views
Which statements are part of the safety protocol for this lab experiment? Check all that apply.
Always wear safety goggles when
1 answer
65 views
The acceleration of the car with two washers added to the string would be
1 answer
37 views
The normal force acting upon the car is best represented by arrow
. The force of gravity acting upon the washers is best
1 answer
34 views
The variables for Part II of this experiment include the force applied to the car and the acceleration of the car. Use the
1 answer
64 views
From point A to point B, the car will
. From point B to point C, the car will . Assuming the washer on the car is not blocked by
1 answer
44 views
The variables for Part I of this experiment include whether or not the car hits the barrier and the distance that the washers
1 answer
72 views
Write a hypothesis for Part I of the lab, which is about the effect on an object being carried by a car, when the car
1 answer
56 views
n this experiment, you will use a track, a toy car, and some washers to explore Newton’s first two laws of motion. You will
1 answer
60 views
wo people push on the same door from opposite sides as shown.
A man pushes on a door from the left. A woman pushes on the door
1 answer
51 views
A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1 m/s and strikes a pin with a
5 answers
69 views
Luis and Aisha conducted an experiment. They exerted different forces on four objects. Their results are shown in the table.
A
1 answer
56 views
The Rocket Club is planning to launch a pair of model rockets. To build the rocket, the club needs a rocket body paired with an
1 answer
72 views
Juan inflates a balloon and then releases its end to let the balloon go free as air comes out. The balloon then flies around the
1 answer
69 views
Action and reaction forces are described by which of Newton’s laws of motion?
first second third fourth
1 answer
34 views
A cart accelerates at 2 m/s2 when a force of 60 N is applied. What is the mass of the cart? (Formula: F=ma)
0.03 kg 30 kg 62 kg
1 answer
49 views
Ana exerts a force of 20 N on a volleyball that has a mass of 0.15 kg. What is the force that the volleyball exerts on Ana?
0.15
1 answer
43 views
How do Newton’s laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can pass a
3 answers
68 views
A ball has a mass of 140 g. What is the force needed to accelerate the ball at 25 m/s2? (Formula: F=ma)
3.5 N 115 N 165 N 4.5 N
1 answer
54 views
A 2.9 kg model rocket accelerates at 15.3 m/s2 with a force of 44 N. Before launch, the model rocket was not moving. After the
1 answer
88 views
Annie has a soccer ball and a kickball. She kicks each ball with the same force. The soccer ball accelerates at 3 m/s2, and the
1 answer
50 views
What will happen to a test dummy during a crash test if its seatbelt is not buckled?
The test dummy will stop when the car stops.
1 answer
72 views
In a crash test, a 2,500 kg car hits a concrete barrier at 1.3 m/s2.
If the car strikes the barrier with a force of 3,250 N, how
1 answer
58 views
In a crash test, a 2,500 kg car hits a concrete barrier at 1.3 m/s2.
Calculate the amount of force at which the car strikes the
1 answer
49 views
Thalia is drafting a plan to move a large, perfect sphere concrete sculpture that is in front of her office building. Describe
1 answer
35 views
Nikolas had an idea that he could use the compressed carbon dioxide in a fire extinguisher to propel him on his skateboard.
Nikol
1 answer
102 views
Nikolas had an idea that he could use the compressed carbon dioxide in a fire extinguisher to propel him on his skateboard.
Which
1 answer
52 views
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