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kali
Questions and answers by visitors named
kali
Questions (608)
Which of the following would NOT be an example of a longitudinal wave?
Teacher: What is a longitudinal wave Me: - Matrix Morpheus
1 answer
217 views
Juliet wants to significantly increase the amount of kinetic energy of her bowling ball in order to increase her chances of
3 answers
352 views
What is the wavelength of a 20 Hz periodic wave moving at 40 m/s?
Use the equation below! a 2 m b 800 m c 0.5 m d 80 m
3 answers
163 views
Which of the following substances would allow an electric current to flow through it easily?(1 point)
Responses carbon (C) carbon
1 answer
308 views
The following samples are all water. Other than the temperature, all the water samples are identical. Which of the four samples
1 answer
183 views
The diagram below shows a simple electrical circuit.
Which of the following would always increase the flow of current through the
1 answer
144 views
What is the wavelength of a 20 Hz periodic wave moving at 40 m/s?
Use the equation below! a 80 m b 0.5 m c 800 m d 2 m
3 answers
156 views
When would a cup of hot coffee left on the counter stop transferring heat?
a When it has gained all of the air's thermal energy b
2 answers
240 views
Match the scenario to the type of interaction between the particles.
Column A 1. Two positive charges are place close together:
3 answers
230 views
Which circuit will stop producing light if one bulb burns out?
a Circuit 1 b Circuit 2 c Circuit 3 d Circuit 4
1 answer
168 views
Why does air in a room rise when it gains thermal energy from a heater? (1 point)
Responses Its molecules move around more
4 answers
583 views
Match the gravity term to the correct example or definition.
Column A 1. An open parachute has __________ air resistance than
2 answers
220 views
Match the definitions below with the correct terms
A where a story take place B the use of an unexplinable event to resolve a
1 answer
187 views
Some reactions that are predicted by their sign deltaG to be spontaneous at room temperature do not proceed at a measurable rate
6 answers
3,427 views
Machines were invented to have a mechanical advantage, so the work output is always __________ than the work input.
a greater b
1 answer
110 views
Review the examples below. Which would be considered an example of convection.
a boiling water on a hot stove b a glass of water
1 answer
133 views
Which materials would be the best insulators for a handle on a pot or pan that is used on the stove?
a wood or rubber b copper or
1 answer
193 views
A construction worker uses a board and log as a lever to lift a heavy rock. If the input arm is 5 meters long and the output arm
1 answer
125 views
Which scenario shows conduction?(1 point)
Responses Hot soup warms the bowl where it sits. Hot soup warms the bowl where it sits.
4 answers
280 views
Which analogy best describes voltage?(1 point)
Responses diameter of a pipe through which water move diameter of a pipe through
5 answers
284 views
Your pencil and notebook are both sitting motionless on your desk. Which of the following explanations correctly explains which
4 answers
309 views
Which statement BEST explains how the iron uses energy?
a The iron transforms sound energy into mechanical energy. b The iron
1 answer
126 views
Which of the following would NOT be an example of a longitudinal wave?
Teacher: What is a longitudinal wave Me: - Matrix Morpheus
1 answer
258 views
In a transverse wave, the vibration is ____________ to the direction the wave moves.
a parallel b perpendicular
1 answer
166 views
In a transverse wave, the medium vibrates
a at right angles to wave velocity b parallel to wave velocity c in a circle around the
1 answer
120 views
A longitudinal wave has ___________sections, where the waves are compact, and __________ sections, where the waves are spread
3 answers
363 views
What part of the wave is labeled A?
a amplitude b wavelength c crest d trough
1 answer
89 views
Which part of the wave is labeled B?
a amplitude b wavelength c crest d trough
1 answer
197 views
The force of gravity on different planets is shown in the table below. Place the objects below in order, from smallest weight to
1 answer
294 views
match the definitions below with the correct terms
a a persuasive appeal to the the emotions b a polite way of expressing an
2 answers
146 views
Waves are _________.
a forces b matter c particles d vibrations
1 answer
82 views
Which of the following would be an example of an insulator?
a copper wire b tin can c cooking pan d Styrofoam cooler
1 answer
134 views
Juliet wants to significantly increase the amount of kinetic energy of her bowling ball in order to increase her chances of
1 answer
97 views
Which of the following statements is correct regarding the circuit below?
a It is a parallel circuit, and if one bulb breaks, all
1 answer
199 views
Tamra knows that gravitational force exists between objects that are not in contact with each other. She is investigating
2 answers
277 views
How could you increase the mechanical advantage of the ramp below?
a cover the surface of the ramp with carpet b decrease the
1 answer
199 views
Calculate the weight of an object with a mass of 50 kg on a planet with an acceleration due to gravity of 2.0 m/s2.
a 52 N b 25 N
1 answer
88 views
A diagram is drawn showing a swing set with a swing pulled backward prior to release. The diagram shows how the swing will move
1 answer
131 views
please help me solve this riddle. "you've heard me before, yet you hear me again. Then I die, Til' you call me again." Who wrote
3 answers
801 views
I am working on a project for school and I can't seem to find the year that these Chinese inventions were invented.
Yo-yo.
1 answer
441 views
what were the egyptian portrait masks for mummies made of
1 answer
367 views
if kyra and chloe each ate half a pizza, how is it possible that kyra ate more pizza?
1 answer
322 views
what is the predicate adjective and participle in this sentence?
Nearly a hundred years later, a talented ballet dancer appeared
1 answer
457 views
If a movie ticket now averages $6.75 and has been increasing an average of 15% per year compute the cost:
in 8 years 8 years ago
1 answer
395 views
You have a bag with 60 black jelly beans and 240 red ones.
a) If you draw one jelly bean out of the bag, find the probability
1 answer
493 views
35g of water at 55 degrees Celsius is heated until it is all steam at 100 degrees Celsius. How much every was added?
2 answers
882 views
how do you solve 5k-3=negative13
1 answer
245 views
At what current drain does the ampere-hour Energizer d cell drop to 75% of its value at 25mA?
2 answers
538 views
what do you call drilling 4976 holes? worksheet answeres
3 answers
620 views
ok i don't know this so here it is it says use the number 913,256 and write the period that has the 913. what did they just say?
4 answers
464 views
(1 pt) Find all critical values for the function
f(x) = 6 x^3 - 18 x + 1, and then list them (separated by commas) in the box
2 answers
592 views
To construct an effective ending to any type of essay, you should
2 answers
957 views
PLS HELP
A projectile is fired from the origin (at y = 0 m) as shown in the diagram above. The initial velocity components are Vx
2 answers
961 views
12-8/n=-1
1 answer
67 views
Ms. Avari is having trouble lifting the 1000N kettlebell. If Ms. Avari does not have enough force to lift it all the way up 4
1 answer
208 views
A construction worker uses a board and log as a lever to lift a heavy rock. If the input arm is 5 meters long and the output arm
1 answer
108 views
If a machine requires an input of 5000 Joules of input to do 2500 Joules of work, what is the efficiency of the machine?
1 answer
80 views
Put the following scenarios in order from the most work done to the least amount of work done.
1 answer
64 views
Put the following scenarios in order from the most work done to the least amount of work done.
Reorder answers 1.An object is
1 answer
113 views
Which of the following are examples of levers? Check all that apply.
a seesaw b axe c rolling pin d scissors e slide f bicycle
2 answers
87 views
What are two examples of Class two levers? Choose all that apply
a scissors b wheelbarrow c hammer and nail d bottle opener e
3 answers
229 views
Mechanical advantage is calculated by using the formula:
a Normal Force/ Acceleration b Length of Slope (L) / Height of slope (H)
2 answers
100 views
Which of the following would increase the mechanical advantage of an inclined plane?
a you cannot increase mechanical advantage b
1 answer
207 views
A child makes a ramp to push his toy dump truck up to his sandbox. If he uses 5 newtons of force to push the 12-newton truck up
1 answer
97 views
A truck has a wheel that has a radius of 60 cm. The axle that powers the wheel has a radius of 10 cm. What is the mechanical
1 answer
129 views
Machines can have an efficiency of 100%.
True False
1 answer
152 views
Which of the following are examples of work being done on an object? Choose the 4 that apply.
a Carrying a bag of groceries to
1 answer
166 views
A car jack with a mechanical advantage of 10 needs to produce an output force of 200 N to raise a car. The input force required
1 answer
97 views
A wheelbarrow can be used to help lift a load, such as a pile of dirt, and then push the load across a distance. What two simple
3 answers
128 views
what is the area of the figure below
5in 3in 12in a 18in^2 b30in^2 c36in^2 d60in^2
3 answers
88 views
what is the area of the figure below
the figure below is a trapizoid 5in 3in 12in a 18in^2 b30in^2 c36in^2 d60in^2
4 answers
88 views
If Ms. Avari has to carry a stack of books that have a weight of 14.75 N up a 12 m height staircase, how much work will she be
1 answer
139 views
Charlie lifts a box with a force of 500 N and sets it on a table top 1.2 m above its starting position. Lauren pushes an
2 answers
127 views
How does the pulley make work easier?
a It changes the mass of the piano, making it easy to raise b It changes the direction of
3 answers
192 views
Match the unit with what it measures.
Column A 1. joule: joule 2. newton: newton 3. meter: meter
1 answer
94 views
Andrea is building a birdhouse. She hammers a nail in the wrong place and needs to remove it. She uses the back of her claw
3 answers
107 views
What is the mechanical advantage of the class 1 lever?
Input = Effort Output = Load a 6 b 21,600 c 216 d .00138 e 60
1 answer
114 views
True or False:
A lever produces more work with less effort. True False
1 answer
63 views
Noah and Luke lifted the canoe up from the riverbank, carried it across the yard, and placed it on the top rack.
When are the
1 answer
99 views
The mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle.
What is the mechanical
3 answers
117 views
What is the name for the point on which a lever rests?
1 answer
70 views
How much work does Juanita do if she uses a force of 40 newtons to pull 2 friends on a wagon for 32 meters?
1 answer
98 views
Work is:
a energy from the Sun b a type of machine c a force that pulls you towards the Earth d a force that moves an object
1 answer
71 views
The girl in the picture applies 10 N of force to the snowball to move it 2 meters. How much work has she done?
person-rolling-big
1 answer
119 views
Put the cars in order of achieving the greatest efficiency. Order them, the greatest efficiency at the top to the least
1 answer
263 views
Tito and Michael put 1200 joules of work into pushing a box up a ramp, but only 300 joules of work is output for moving the box.
1 answer
100 views
How does using a ramp make work easier when loading a couch onto a truck three feet above the ground?
a It allows a smaller force
1 answer
106 views
It took Meghan 50 Joules to carry her shopping bags 5 meters to the car. How much force did she use?
Work = Force x Distance a
3 answers
130 views
LaToya uses 50 newtons (N) of force to pull a 500 N cart. Which statements are correct about calculating LaToya's mechanical
1 answer
177 views
What is the relationship between a substance’s thermal energy and its kinetic energy?(1 point)
Responses As the substance’s
1 answer
297 views
What is the relationship between a substance’s thermal energy and its kinetic energy?(1 point)
Responses A substance’s
3 answers
267 views
Why does air in a room rise when it gains thermal energy from a heater? (1 point)
Responses Its molecules move around more
4 answers
275 views
How does a simmering pot of spaghetti sauce illustrate convection currents?(1 point)
Responses Warmer sauce at the bottom of the
1 answer
371 views
Which is the best description of radiation?(1 point)
Responses transfer of thermal energy within a gas transfer of thermal energy
4 answers
388 views
Which of the following best describes a direct current?(1 point)
Responses an electrical current that flows in alternating
1 answer
259 views
Which of the following statements about electrical charges is true?(1 point)
Responses Opposite electrical charges repel one
3 answers
289 views
Which of the following statements best describes the relationship between atoms and conductivity?(1 point)
Responses Atoms with
3 answers
279 views
Why is copper wire a better conductor of electricity than carbon fiber?(1 point)
Responses Copper (Cu) is a metal, and only
3 answers
355 views
Which analogy best describes amperage?(1 point)
Responses pressure of water moving through a pipe pressure of water moving
4 answers
194 views
Which analogy best describes resistance?(1 point)
Responses length of the pipe through which water moves length of the pipe
4 answers
207 views
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