Answer:
The center of mass can be calculated by taking the masses you are trying to find the center of mass between and multiplying them by their positions
If a bouncing ball has a total energy of 20 J and a kinetic energy of 5 J, the ball’s potential energy is
5
10
15
20
J.
If the kinetic energy of the ball decreases, then the potential energy will
decrease
increase
Stay the same
.
.
Answer:
15 and Increasing
Explanation:
Hope this helps
Have a wonderful day and many more to come
Alexis~
~A.K.A Moon~
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:
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:
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]
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.
What is the speed at 5s?
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~
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.
Read more about Diversity here https://brainly.com/question/1136627
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) 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
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.
Learn more about conservation of energy here: https://brainly.com/question/166559
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 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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6. What could you do to increase the strengths
of your electromagnet?
Answer: Increase Winding Count
Reduce Resistance
Increase Voltage
Switch From AC to DC
Explanation: HOPE THIS HELPS!!! ^w^
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.
An office building has a 24-volt branch circuit installed for landscape lighting around the front of the building. The circuit was installed in UF cable which requires a minimum burial depth of ___ inches for this circuit.
The circuit was installed in UF cable which requires a minimum burial depth of 6 inches for this circuit.
UF cableUF cable is used as an underground feeder cable to distribute power from an existing building to outdoor equipment. UF cable can also be used as direct burial cable.
For the 24-volt branch circuit installed, the minimum burial depth will be 6 inches.
Thus, the circuit was installed in UF cable which requires a minimum burial depth of 6 inches for this circuit.
Learn more about UF cable here: https://brainly.com/question/8591560
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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If the magnetic field directed north, and the positive charge velocity directed
east, the direction of magnetic force is:
Answer:
Answer would be South..
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
Conductor B is blue, conductor A is red
A. Conductor A has a lower resistance
B. Conductor B has a lower resistance
C. Both conductors have the SAME amount of resistance
D. There is not enough information provided to answer this question because resistance has no relationship to current and voltage
Answer and explanation please!
Answer:
Option B, B has lower resistance
Explanation:
Ohm's law defines the relationship between the voltage, current, and resistance in an electric circuit: i = v/r. The current is directly proportional to the voltage and inversely proportional to the resistance.
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.
Read more on PV panel here: https://brainly.com/question/13486973
Starting from rest, a boat increases its speed to 4.12 m/s with constant acceleration. (a)
What is the boat's overage speed? (b) If it takes the boat 4.77s to reach this speed, how far
has it travelled?
Answer:
initial velocity = 0 m/s
final velocity = 4.92 m/s
constant acceleration so,
(a) average velocity =
(initial velocity + final velocity)/2
(b) distance = average velocity x time
substitute and calculate
Explanation:
HOOE ITS HELP ;)
The initial velocity is zero. and the acceleration is constant. Thus the average velocity of the boat is 4.12 m/s. The boat will cover a distance of 19.6 m within 4.77 s.
What is acceleration ?Acceleration is a physical quantity that, measures the rate of change in velocity. It is a vector quantity thus having both magnitude and direction. It can be defines as the ratio of change in velocity to the change in time.
If the acceleration is constant, then the magnitude of velocity is constant.
Given initial velocity = 0 since the boat was in rest.
then the average speed of the boat = 4.12 m/s
Δt = 4.77 seconds.
The distance covered within this time can be determined using the equation as follows:
s = speed × time.
s = 4.12 m/s × 4.77 s = 19.6 m
Therefore, the boat will travel up to 19.6 m within 4.77 seconds.
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please help me with this
SOMEONE HELP ME PLEASE
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:
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]
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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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?.
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.
