Answer:
Explanation:
The formula for kinetic energy Ke=1/2mv^2 where Ke is kinetic energy, m=mass, and v= velocity.
If the kinetic energy is increased that means that there must be an increase in mass or velocity. However, since the velocity is squared that means that velocity affects the kinetic energy of the object more than the mass does.
Someone plz help I’m on a time limit :(
What patterns occur in the Earth-Sun-Moon system that allow us to identify the cause of
eclipses?
Answer:
Earth's rotation and orbit and the Moon's orbit cause observable patterns (Day and night, seasons, phases of the Moon, tides).
1)A 2.0 kilogram wooden object is a on a wooden surface. What is the maximum force of friction that can be produced in this system?
Answer:
fr = 7.84 N
Explanation:
To solve this exercise we must use Newton's second law, the case of translational equilibrium
F -fr = 0
F = fr
where F is the applied force and fr the friction force
for the Y axis
N -W =
N = W
N = m g
the friction force has the equation
fr = μ N
fr = μ m g
in this case they indicate the two materials that are in contact with wood on wood, so when reviewing the tables the coefficient of static friction is μ=0.4
let's calculate
fr = 0.4 2.0 9.8
fr = 7.84 N
Which part of the drum (Instrument)vibrates when it produces sound?
Answer:
Striking the head of the drum changes its shape and compresses the air inside the shell. the compressed air presses on the bottom head and changes its shape. then these changes are transmitted to the drum shell and reflected back and this action is repeated created a vibration.
Explanation:
Hope this helped Mark BRAINLEST!!!
Complete the statements about convection currents. Convection currents occur in fluids because of temperature and differences. Convection currents transfer energy throughout a fluid. They continue until all of the fluid is at the same temperature.
Answer:
density; thermal
Explanation:
Convection currents occur in fluids because of temperature and density differences. Convection currents transfer thermal energy throughout a fluid.
When a fluid is heated, the molecules closest to the heat source gets heated first and their temperature is raised. The rise in temperature lowers their density and as such, they move to the upper portion of the fluid to be replaced by yet-to-be-heated molecules at the upper portion.
When the replacement molecules also get heated, the same process occurs and a to-and-from rotational movement of molecules, also known as convection current, is created within the fluid. The to and from movement, thus, transfer thermal energy within the fluid until all the molecules within the fluid are at the same temperature.
Answer
density; thermal
Explanation:
its right i just did it
Write down the use of light pipe.???
The outside diameter of your teacher's rear bicycle tire is 16 inches. How far will he travel if the rear wheel makes 1200 revolutions on the road?
Answer:
241,274.32 inches
Explanation:
How far will he travel if the rear wheel makes 1200 revolutions on the road?
Since the rear wheel makes one revolution in the distance of a circumference of a circle, C with diameter, d = 16 inches
C = πd²/4
So, the distance, travelled in 1200 revolutions is D = 1200 × C = 1200πd²/4
Substituting d = 16 into D, we have
D = 1200πd²/4
D = 1200π(16)²/4
D = 76800π
D = 241,274.32 inches
5. What do you think? At a baseball game, when you are far from the batter, you might see the batter hit the ball before you hear the sound of the hit. Why do you think this
happens?
Answer:
The speed of sound in air is lower compared to in solids and liquids.
Explanation:
Sound is a wave that can be generated by a vibrating body. Its speed through different media differs due to the nature of the media.
Since the molecules of solids are closely packed, sound can be easily transferred from one molecule to another at a faster rate. Thus, the high speed of sound in solids.
In liquids, the molecules are not as closely packed as solids. So that the speed of sound though liquids is lower compared to that of solids. Gases has its molecules farther apart, thus making the speed of sound through it the lowest compared to solids and liquids.
Therefore the sound of the batter hitting the ball is heard latter, due to its lower speed through the air.
As the amplitude of a mechanical wave increases, which of the following quantities
increases?
A.wavelength
B.frequency
C.energy
D.speed
.c ...energy
Explanation:
Amplitude does not affect wavelength. It also does not affect wave speed. Amplitude is the energy of the wave measured from the rest position to the top of the crest. A wave with more energy has a higher up crest/ higher amplitude.
As the amplitude of a mechanical wave increases, the quantity which increases is: C. energy.
What is a mechanical wave?A mechanical wave can be defined as a type of wave that requires a medium for its propagation and it creates a disturbance in the medium. Thus, a good example of mechanical wave is sound wave, which is typically transported in a perpendicular direction.
What is amplitude?Amplitude refers to the maximum displacement of a wave when measured from its equilibrium position. Also, the amplitude of a mechanical wave has no effect on the following:
WavelengthSpeedFrequencyRead more on wave here: https://brainly.com/question/19250621
An Olympic high diver (mass = 70 kg) stands on a platform 20 m above the surface of the water. What is the diver's gravitational potential energy?
Answer: 13720
Explanation: the equation is....
(70 kg) (9.8 m/[tex]s^{2}[/tex]) (20 m) = 13720Weapon Proclam
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inis section is worth 7 points or lo total
Listed in the Item Bank are key terms and expressions, each of which is associated with one of the columns. Some terms may display
additional information when you click on them. Drag and drop each item into the correct column. Order does not matter,
ITEM BANK: Move to Bottom
air
lemon juice
pencil lead
plastic
wood
Conductors
Insulators
aluminum foil
glass
drag and drop answe Were
drag and drop answer here
Answer:
I can't get a clear explanation of the question
how high is the pole from which the lamp fell freely if it hits the ground at a speed of 15 m/s
Answer & Explanation:
The acceleration due to gravity is about 10 m/s^2.
That means a the speed of a falling object will increase by 10 m/s every second that it falls.
We know that the lamp hits the ground at 15 m/s.
That means the lamp has been falling for
[tex]\frac{15 m/s}{10 m/s^{2} } = 1.5 s[/tex]
Now we use the formula [tex]h = \frac{1}{2} gt^{2}[/tex] to calculate the height, where
h is the height
g is the acceleration due to gravity and
t is the time taken to fall a height of h.
h = 1/2 x 10 x 1.5^2 = 11.25 m
All forces acting upon a body are equal in magnitude
and opposite in direction. The object is initially
motionless and will remain motionless.
What is this condition called?
Answer:
Explanation:
It's called static equilibrium. The object is motionless and every force equals/cancels each other out
What are 5 movements/skills that you are able to do because of your muscles?
Please help this is due today and I really need help.
One movement is walking. A skill we use is writing. Another movement is blinking. Another skill we use with muscles is typing. And finally, another skill we use muscles during is brushing your teeth.
do dendrites take in information while the axon takes information away from the cell body
Answer:
Yes
Explanation:
Dendrites bring electrical signals to the cell body and axons take information away from the cell body.
Distance and direction of an object's change in position from a starting point are:
Answer:
An object changes position if it moves relative to a reference point. The change in position is determined by the distance and direction of an object's change in position from the starting point (displacement). Direction • Direction is the line, or path along which something is moving, pointing, or aiming.
Explanation:
Answer: An object changes position if it moves relative to a reference point. The change in position is determined by the distance and direction of an object's change in position from the starting point (displacement). Direction • Direction is the line, or path along which something is moving, pointing, or aiming.
Explanation: BRAINLIEST?
Changes in the Moon’s position as it revolves around the Earth results in more or less of the sunlight __________from the Moon being visible when observing the Moon from the Earth. This causes the Moon to appear to change shape from Earth. *
Answer:
reflection of the moon, or just reflection
Explanation:
when the sunlight hits the moon, it refects back to earth making the moon appear to glow
Answer:
reflecting
Explanation:
the sun's light reflects off the moon, making the moon visible
If a book was to fall from the shelf, how fast would it be moving just before hitting the floor?
Answer:
0 becouse it will still before falling
Explanation:
Given that the frequency of an Em wave is 4THz, what is its wavelength? a) 75,000um b) 75,000nm c) 75,000pm d) 75,000A
Answer:
λ = 75 µm, correct is A
Explanation:
In waves, speed is related to wavelength and frequency
c = λ f
λ = c / f
in this exercise indicate the frequency of rationality
f = 4 THz = 4 10¹² Hz
let's calculate
λ = 3 10⁸/4 10¹²
λ = 7.5 10⁻⁵ m = 75 10⁻⁶ m
λ = 75 µm
PLEASE PLEASE HELPPP!
Select all that apply!
Answer:
1 AND 3
Explanation:
PLEASE PLEASE HELPPPP
Answer: 8 volt battery in each device.
I think the units is 7.
Explanation:
use the diagram to identify the four regions of the earthworm.
dorsal side:
ventral side:
anterior end:
posterior end:
here are some pictures
Answer:
Dorsal side:B
Ventral side:D
Anterior end:A
Posterior end:C
Explanation:
The four regions of the earthworm are, A is the anterior end,B is the dorsal side, C is the posterior end, and D is the ventral side.
What are earthworms?Earthworms are common soil dwellers who are both safe and useful. Earthworms help plants flourish by collapsing dead and decaying organic debris into rich humus soil.
They also aerate the soil and enhance flow by digging small canals and holes.
The four regions of the earthworm are;
A is the Anterior end
B is the Dorsal side
C is the Posterior end
D is the Ventral side
Hence all the regions are clearly defined with the help of digrame.
To learn more about the earthworms refer to the link;
https://brainly.com/question/20992190
If a car with a mass of 5Kg, has a momentum of 25kgm/s, how fast is it travelling?
Answer:
5m/s
Explanation:
p=mv, or momentum (p) is equal to mass (m) times velocity (v).
so:
m=5Kg
p=25Kgm/s
v=p÷m
v=25÷5
v=5m/s
hoped this helped :)
Answer:
5hrs
Explanation:
Mass•Accelleration=Momentum (5kg•5hrs=25Mps)
Mass÷Momentum=Accelleration (25Mps÷5kg=5hrs)
What is the mass of a bicycle traveling at a speed of 5 m/s and with a kinetic energy of 125 J?
Answer:
K. E= 1/2MV²
125 = 1/2M5²
multiply both side by 2
250 = 25M
M= 10kg
Help with physics please! Offering a bunch of points!
ILL GIVE BRAINLY AND THIS IS 15 POINTS PLZZZ HELPPPPPP
The best thermal insulators _____________________.
have free electrons.
are metals.
conduct heat well.
are gases.
Answer:
have free electrons
Explanation:
they are loosely bound and free to move through the material
An object accelerates at 50 m/s/s with a force of 100 N. What is its mass?
Answer:
Explanation:
A change in an object’s motion—such as Xander speeding up on his scooter—is called acceleration. Acceleration occurs whenever an object is acted upon by an unbalanced force. The greater the net force acting on the object, the greater its acceleration will be, but the mass of the object also affects its acceleration. The smaller its mass is, the greater its acceleration for a given amount of force. Newton’s second law of motion summarizes these relationships. According to this law, the acceleration of an object equals the net force acting on it divided by its mass. This can be represented by the equation:
Acceleration=Netforce-Mass or a=F/m
The mass of an object is 0.201 kg. The object requires 15.0 J of heat to
raise its temperature by 283 K. What is the specific heat of the object? *
Answer:
49k
Explanation:
yes you can go with me
A diode, which allows current to flow in one direction only, consists of two types of semiconductors joined together.
True or false
Answer:
True.
Explanation:
A diode, which allows current to flow in one direction only, consists of two types of semiconductors joined together.
A semiconductor can be defined as a crystalline solid substance that has its conductivity lying between that of a metal and an insulator, due to the effects of temperature or an addition of an impurity. Semiconductors are classified into two main categories;
1. Extrinsic semiconductor.
2. Intrinsic semiconductor.
An intrinsic semiconductor is a crystalline solid substance that is in its purest form and having no impurities added to it. Examples of intrinsic semiconductor are Germanium and Silicon.
In an intrinsic semiconductor, the number of free electrons is equal to the number of holes. Also, in an intrinsic semiconductor the number of holes and free electrons is directly proportional to the temperature; as the temperature increases, the number of holes and free electrons increases and vice-versa.
In an intrinsic semiconductor, each free electrons (valence electrons) produces a covalent bond.
Help
Question 6: Which of these is Not a unit of density?
Answer:
SI
Explanation:
The velocity of a car increases from 10 km/h to 50 km/h in 5 seconds. What is its acceleration?
Answer:
2.22m/s^2
Explanation: