Answer:
A magnet is used in a compass to show the direction.
Magnets are used in medical equipment.
Powerful magnets are used to lift objects
they are used in refrigerator, televisions, earphones etc
Answer:
1. they are used in medical equipment
2. they are used in dynamos
3. they are used in generators and motors
4. powerful magnets are used to lift heavy objects
5. they are used to prevent corrosion in a water heater
A 4. 0 nc positive point charge is located at point a in the figure. (figure 1) what is the electric potential at point b?.
The electric potential at point b experienced by the charge cab be determined using the formulas given.
Electric potentialThe electric potential of a point charge is the work done in moving the charge from infinity to certain point against the electric field.
V = Ed
V = (F/q)d
V = (Fd)/q
where;
V is the electric potentialF is electric forceE is the electric fieldq is the chargeThus, the electric potential at point b experienced by the charge cab be determined using the formulas given.
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A person hits a baseball with a wooden bat, and the ball flies off into the air. The system consists of the person, the baseball, the bat, the air, and the Earth.
Which image and description best analyzes the flow of energy?
The potential energy of the raised wooden bath will be converted into kinetic energy of the flying baseball when it is hit.
Conservation of energy
The law of conservation of energy states that energy can neither be created nor destroyed but can be transformed from one form to another.
Flow of the energy when the baseball is hitThe potential energy of the raised wooden bath will be converted into kinetic energy of the flying baseball when it is hit.
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The gravitational acceleration on Earth is 9. 8 m/s2. What is the weight of a car on Earth (to the nearest whole number) if it has a mass of 1360 kg? 14 N 139 N 1333 N 13,328 N.
Hi there!
Recall the equation for weight.
[tex]W = Mg[/tex]
W = Weight (N)
M = Mass (kg)
g = acceleration due to gravity (m/s²)
The weight of an object depends upon its MASS and the strength of the GRAVITATIONAL field. We can solve for weight:
[tex]W = 1360 * 9.8 = \boxed{13,328 N}[/tex]
If peak electricity use occurs around 2p. M. In the los angeles area and avoiding brownouts is more important to the installers of the pv panels than annual energy output, which of the following pv panel systems would be best to use in the area?.
The photovoltaic (PV) panel system which would be best to use in the Los Angeles area is no tracking, tilted west.
What is a PV panel system?A PV panel system is an abbreviation for photovoltaic (PV) panel system and it is also referred to as a photovoltaic module, solar cell panel, or solar electric panel.
Basically, a PV panel system is an assembly of photovoltaic cells that transforms light energy (sunlight) obtained directly from the Sun into electrical energy (electricity).
In this scenario, the photovoltaic (PV) panel system which would be best to use in the Los Angeles area is no tracking, tilted west because it prevent brownouts.
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Which is the primary lunar phase that takes place one week after the first quarter.
The lunar phase that occurs one week after the first quarter is :
Third quarter phase How long does the moon take to complete its cycle ?It takes about 4 weeks for the moon to complete its cycle of phases. After every 1 week the moon undergoes one quarter (1/4) of its phase/cycle. Therefore the primary lunar phase that the moon will undergo one week after the first quarter is the Third quarter phase before the full moon
During the third quarter phase, half of the moon is completely illuminated in comparison to the other half ( first quarter ). this phase is the last phase before the full moon.
Hence we can conclude that The lunar phase that occurs one week after the first quarter is : Third quarter phase.
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How are cactus adapted to survive in deserts?
1. They have evolved their leaves into spikes for minimum water loss through transpiration.
2. They have a waxy layer for minimum water loss.
3. They have thick walls for minimum water loss.
4. They can take water from atmosphere.
5. They change the photo energy from Sun into an intermediate stage and store it, so that they can make food even in night.
In today's world, scientists can tell that
plates are moving. Which of these is one
of those ways?
A. Microscopes
B. GPS
C. Stethoscopes
D. Binoculars
Answer:
I believe the answer is GPS
Explanation:
SOMEONE HELP ME PLEASE
What are all the principles of Cell Theory. Group of answer choices Cell only form from living cells All cells have chromosomes All living things have cells All cells have a nucleus People only have cells Cells are the basic unit of life
Answer:
Cell theory is the scientific theory that states that all living things are composed of cells and that cells are the basic unit of life. The three principles of cell theory are the cell is the smallest unit of life, all cells come from preexisting cells, and cells are the basic unit of function in living things.
Explanation:
Please mark me brainliest
PLEASE HELP I WILL GOVE YOU BRAINLIEST OR WTVR ITS CALLED
Answer:
Correct answer of the question is B .
Could gold be made from other elements?
Answer:
Yeah, you can make gold from other elements.
Explanation:
To make gold out of other elements you need to have a nuclear reaction.
I hope it helps! Have a great day!
Muffin ^^
Answer:
Yes.
Explanation:
Gold can be made from other elements but it is too expensive so it’s not really worth it.
I hope it helps! Have a great day!
bren~
If the magnetic field directed north, and the positive charge velocity directed
east, the direction of magnetic force is:
Answer:
Answer would be South..
What element would I make if I added 2 protons to Lithium (Li)?
Answer:
Lithium Fluoride
One lithium atom can combine with one fluorine (F) atom. Together, they make the formula LiF. Fluorine has seven electrons of it's own. Lithium gives up its one electron to make both atoms happy.
Explanation:
Please Help This One I just can't think.
Answer:radiation, conduction, and convection
one or the other
Answer:
across:
5) infrared
6) convection
7) vacuum
8) conduction
9) insulator
down:
1) conductor
2) currents
3) radiation
4) insulation
A heavy boy and a lightweight girl are balanced on a massless seesaw. The boy moves backward, increasing his distance from the pivot point. What happens to the seesaw?.
A linear elastic spring can be compressed 10. 0 cm by an applied force of 5. 0 N. A 4. 5
kg crate of apples, moving horizontally at 2. 0 m/s collides with the spring. What will be
the maximum compression of the spring?
The maximum compression of the spring is 0.6 m.
Spring constantThe spring constant of the spring is calculated as follows;
F = kx
k = F/x
k = (5)/(0.1)
k = 50 N/m
Maximum compression of the springThe maximum compression of the spring is calculated as follows;
U = K.E
¹/₂kx² = ¹/₂mv²
x² = (mv²)/(k)
x = √(mv²)/(k)
x = √(4.5 x 2²)/(50)
x = 0.6 m
Thus, the maximum compression of the spring is 0.6 m.
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Is the meter considered the base unit of the metric system?.
Answer:
metric system
PLEASE I NEED ANSWER BY 7:40!!!!!!!
1. Two students were discussing the color of a blue paper.
Student A said, The paper looks blue because the paper reflects light of a specific wavelength that our eye sees as blue.
Student B said, The paper looks blue because the paper reflects light of a specific frequency that our eye sees as blue.
What would you say to these students to help them understand?
Answer:
Student A is correct
Explanation:
Colored objects look the way they do because of reflected light. When sunlight is shined on a green leaf, the violet, red and orange wavelengths are absorbed. The reflected wavelengths appear green. In each case we are seeing the complementary colors to the ones absorbed.
What is the meaning of diversity and find evidence in the source which show that all South Africans should accept and honour diversity?
Diversity involves the inclusion of people which have various backgrounds and differences.
What is Diversity?This involves people from a range of different social and ethnic backgrounds and of different genders, etc living in a given area at a given time.
It is best for all South Africans to accept and honour diversity as discrimination is wrong and individuals are unique and equal.
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What is the soft tissue called at your nose and ears?
A. tendon
B. bone
C. muscle
D. cartilage
Answer:
The answer is D, cartilage.
8. True or false. A transform boundary formed the Himalaya Mountains.
Answer:
False
Explanation:
A convergent plate boundary formed the Himalaya Mountains.
Use the linear equation, y = mx + b and solve for B (the y-intercept).
y = -9/-13x + ____
Slope = -9/-13
Endpoint = 7,-6
Answer:
[tex]b=-\frac{141}{13}[/tex]
Explanation:
Given the following question:
[tex]y=mx+b[/tex]
In order to find the answer, we substitute the given information into the slope intercept then solve for b.
[tex]y=mx+b[/tex]
[tex]m=\frac{-9}{-13}[/tex]
[tex]y=-6[/tex]
[tex]x=7[/tex]
[tex](7,6)=(x1,y1)[/tex]
Substitute:
[tex]-6=\frac{-9}{-13} (7)+b[/tex]
[tex]\frac{-9}{-13} \times\frac{7}{1} =\frac{63}{13}[/tex]
[tex]\frac{63}{13}+b=6[/tex]
[tex]\frac{63}{13} -\frac{63}{13} =0[/tex]
[tex]6-\frac{63}{13} =-\frac{141}{13}[/tex]
[tex]b=-\frac{141}{13}[/tex]
Hope this helps.
T or F? An electric field has strength, but no direction.????
Answer:
FALSE
Explanation:
an electric field has both magnitude and direction. it also has strength
If something is 50% efficient, how many joules of wasted energy will there be if 750J of energy is put in?
[tex]\large{{\bold{ \underline{ \underline{ \overline{ \overline{ \red{☆Solution :—}}}}}}}}[/tex]
↪Total energy = 750 J
↪Efficiency = 50%
↪Wasted energy = 50% [ 100% - 50%]
Amount of wasted energy
↦ 750 x 50%
↦ 750 x 0.5
↦ 375 J
A drag racer accelerates uniformly over a course 400m long. Determine the car's acceleration if it reaches a top speed of 120 m/s. Assume that the car starts from rest.
According to thrid equation of kinematicsthird equation of kinematics
[tex]\\ \rm\hookrightarrow v^2-u^2=2as[/tex]
Isolate the equation for a
[tex]\\ \rm\hookrightarrow a=\dfrac{v^2-u^2}{2s}[/tex]
[tex]\\ \rm\hookrightarrow a=\dfrac{120^2-0^2}{2(400)}[/tex]
[tex]\\ \rm\hookrightarrow a=120^2/800[/tex]
[tex]\\ \rm\hookrightarrow a=16m/s^2[/tex]
give an example of an energy conversion. make sure to discuss which forms of energy are involved
Answer:
Examples of Energy Transformations: 1. A toaster transforms electrical energy into thermal energy. 2. A blender transforms electrical energy into mechanical energy. 3. The sun transforms nuclear energy into ultraviolet, infrared, and gamma energy all forms of electromagnetic energy.
Explanation:
please help me with this
(a) Calculate the height of a cliff if it takes 2. 35 s for a rock to hit the ground when it is thrown straight up from the cliff with an initial velocity of 8. 00 m/s. (b) How long a time would it take to reach the ground if it is thrown straight down with the same speed.
(a) The height of the cliff will be 8.26 meters.
(b) The time would it take to reach the ground will be 0.717 sec.
What is velocity?
The change of displacement with respect to time is defined as the velocity. Velocity is a vector quantity. it is a time-based component.
(a) The height of the cliff will be 8.26 meters.
According to Newton's second equation of motion
[tex]\rm H =ut-\frac{1}{2} gt^2 \\\\ \rm H =8\times 2.35-\frac{1}{2} 9.81 (2.35)^2\\\\\rm H =8.16 \; m[/tex]
Hence The height of the cliff will be 8.26 meters.
(b)The time would it take to reach the ground will be 0.717 sec.
We must have the final velocity to find the time so;
[tex]\rm v^2=u^2+2gh\\\\ \rm v^2=8^2+2\times 9.81 \times 8.6 \\\\ \rm v= \sqrt{8^2+2\times 9.81 \times 8.6}\\\\\rm v=15.03 \;m/sec[/tex]
According to Newton's third equation of motion ;
[tex]\rm v=u-gt \\\\ \rm t=\frac{v-u}{g} \\\\ \rm t=\frac{15.03-8}{9.81} \\\\ \rm t=0.717 sec.[/tex]
Hence the time would it take to reach the ground will be 0.717 sec.
To learn more about the velocity refer to the link ;
https://brainly.com/question/862972
Label the sound wave- amplitude, wavelength, crest, trough
Answer:
A - Crest, B - amplitude, C - wavelength, D - trough
Explanation:
The amplitude is letter B, the wavelength is letter C, the crest is letter A and the trough is letter D.
What is amplitude, wavelength, crest and trough?Amplitude (B) refers to the maximum displacement or distance from the equilibrium position of a wave.
Wavelength (C) is the distance between two corresponding points on a wave. It is commonly measured as the distance between two consecutive crests or two consecutive troughs of a wave.
A crest (A) is the highest point or peak of a wave. It is the point where the displacement of the medium through which the wave is traveling is maximum in the upward direction.
A trough (D) is the lowest point of a wave. It is the point where the displacement of the medium is maximum in the downward direction.
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Help (๑¯◡¯๑)me please
0
We know
[tex]\\ \rm\hookrightarrow Y=\dfrac{Stress}{Strain}[/tex]
[tex]\\ \rm\hookrightarrow Y=\dfrac{\sigma}{\Delta \ell/\ell}[/tex]
Stress is zero[tex]\\ \rm\hookrightarrow Y=\dfrac{0}{\Delta \ell/\ell}[/tex]
[tex]\\ \rm\hookrightarrow Y=0[/tex]
