Answer:
C. Three to five time a week.
Explanation:
Scientific knowledge
A.
was modified regularly early in human history, but it can no longer be modified.
B.
must be modified by popular vote from the general public.
C.
cannot be modified, even if new information challenges prevailing theories.
D.
can be modified as new information challenges prevailing theories.
Answer:
D
Explanation:
As we progress and learn more, scientists make new discoveries that can contradict earlier discoveries, and since are technology is better today we are able to discover a lot more to add to or change our previous theories.
Answer:
The answer is D. i got this off of study island
Explanation:
Hope this helps!
What 2 things do you need to make sound? help ASAP
Answer:
- A vibrating object
- a medium to travel
HOPE IT HELPS :)
PLEASE MARK IT THE BRAINLIEST!
If the mass of an object is 100kg and the acceleration due to gravity is 9.8m/s^2 what is the weight of the object
Answer:
981 N
Explanation:
recall that weight = mass x acceleration due to gravity = mg
given that m = 100 kg and g = 9.81 m/s²
weight = mg = 100 x 9.18 = 981 N
What is the unit for current
Answer:
ampere is the unit of current
Hey!!!
Here's your answer:
The unit of current is Ampere.
Additional Information:
SI (Sestéme International d' Unite's) is defined as the system of units which is agreed by the International Convention of Scientists held in France in 1960.
Si units of some quantities are as follows :
Length = MetreMass=kilogramTime=secondTemperature=KelvinElectric current=AmpereLuminous intensity= CandelaAmount of substance=MoleArea=square metreVolume=Cubic metreVelocity=metre per secondAcceleration=metre per square secondForce=NewtonDensity=Kilogram per cubic metrePressure=PascalMomentum=Kilogram metre per secondWork and Energy=JoulePower=WattFrequency=HertzPotential difference=VoltResistance=ohmHope it helps.....
Good luck on your assignment
11. What's the best example of a source
of direct current?
A. A magnesium oxide paste
OB. A zinc shell battery
C. An electrolyte
D. A dry cell battery
Answer:
D. A dry cell battery
Explanation:
A dry cell is a type of electric battery, commonly used for portable electrical devices. It was developed in 1886 by the German scientist Carl Gassner, after development of wet zinc-carbon batteries by Georges Leclanché in 1866.
Answer:
A dry cell battery
Explanation:
Which of the following phases changes at point B on the diagram shown below?
A)deposition
B)freezing
C)melting
D)boiling
Answer:
C. melting
option C is correct answer.
What is the time period of vibration?
Answer:
A time period is denoted by 'T' . It is the time to complete one cycle of vibration. As the frequency of a wave increases, the time period of the wave decreases. The unit for time period is 'seconds
HOPE IT HELPS :)
PLEASE MARK IT THE BRAINLIEST!
Fill in the blanks to complete each statement about weathering. Weathering is the breakdown of rocks into smaller particles called-------------- . ------------------ weathering is when rocks are physically broken into smaller pieces, but the minerals in the rock remain the same. When a rock is broken down in a way that changes the mineral composition, it is called----------------- weathering.
Answer:
sedimentary rocks and sedimentary
i am not 100% sure that this is the correct answer but it is an educated guess
Answer:
Sediment
Mechanical
Chemical
Explanation:
If a 15 kg mass accelerates at a rate of 4 m/s2, what net force acts on it?
A 15 N
B 4N
C 3.75 N
D 60 N
E.267 N
Explanation:
Mass(M)=15 kg
Acceleration(A)=4 m/s2
Force=?
Now,
Force(F)=M×A
F=15×4
F=60N Ans
A light wave with a wavelength of 2.5*10^10 meters travels from water into diamond. What is the new wavelength of the light?
Explanation:
please help
I need 100$ USD Dollars for buying arduino kit the proof is in the photo.
Which of the following statements is good advice to prevent becoming overly emotional?
A.
There is no way to prevent becoming overly emotional.
B.
You should hang around with people that make you angry as often as possible so that you get used to having to control your emotions.
C.
Get enough sleep every night.
D.
Eating unhealthy, good tasting food will make you happy so that you don
Answer:
c
Explanation:
Try to remember that sleep deprivation or the lack of sleep, messes with the amygdala in the brain - this is the part of the brain that controls some of our emotions. If you mess with the amygdala then it messes with you - it will cause you to be more fight than flight - it can make you hypersensitive to stuff that you normally could use your coping skills to conquer!
Answer:
c
Explanation:
Pedro is planning to model how changes in weather affect evaporation from
lakes. For his first experiment, he wants to test how humidity affects the
evaporation rate. He places one beaker with 300 mL of water in a dry area,
and he places another beaker with 300 mL of water near a humidifier.
What is the dependent variable in Pedro's experiment?
A. Evaporation rate
B. Temperature
c. Humidity
D. Volume of water
Answer:
Evaporation rate is the dependent variable in Pedro's experiment
Explanation:
it is the variable that is being measured and is expected to change in response to changes in humidity. The independent variable is humidity, which is being manipulated by placing one beaker near a humidifier and the other in a dry area. Temperature and volume of water are not being directly manipulated in this experiment and are therefore not the dependent variable.
which has a greater mechanical advantage. a doorknob or screwdriver?
Answer:
screwdriver should be the awnser is what I think
Some very hot stars appear bluish when viewed by a telescope. This is because they _____ more blue light than stars like the Sun. A. emit B. reflect C. absorb D. transmit
Answer:
A. they emit more blue light than stars like the Sun
Derive the third equation of motion v2=u2+2as
[tex]let \: us \: assume \: a \: body \: moving \: with \: \\ an \: initial \: velocity \: u \: . \: let \: its \: final \\ velocity \: be \: v \: after \: a \: time \: t \: and \: the \\ distance \: travelled \: by \: the \: body \: be \: s . \\ we \: already \: have \\ v = u + at.......(i) \\ s = \frac{u + v}{2} \times t..........(ii) \\ putting \: the \: value \: of \: t \: from \: (i) \: in \\ the \: equation \: (ii) \\ (v = u + at \\ or \: at = v - u \\ or \: t = \frac{v - u}{a} \\ now\\ s = \frac{u + v}{2} \times \frac{v - u}{a} \\ or \: s = \frac{ {v}^{2} - {u}^{2} }{2a} \\ or \: 2as = {v}^{2} - {u}^{2} \\ {v}^{2} = {u}^{2} + 2as \\ hope \: it \: helps \\ good \: luck \: on \: your \: assignment[/tex]
If you apply a net force of 5N on a cart with a mass of 5 kg, show that the acceleration is 1 m/s2.
(SHOW WORK)
Answer: F = 5kg x 1 m/s2 = 5 N
Explanation:
Hi, to answer this question we have to apply the next formula:
Force (F) = mass x acceleration
Replacing with the values given and solving for F (force)
F = 5kg x 1 m/s2 = 5 kgm/s2
Since 1 Newton (N) = 1 kgm/s2
F = 5N
Feel free to ask for more if needed or if you did not understand something.
Categorize these resources as either renewable or Non-renewable
- water
- Forests (plants)
- Rocks - Minerals
- Soil
- Animals
Answer:
Explanation:
water-renewable
forest-renewable
soil-non-renewabal
animals-non-renewable
What does Newton’s first law describe
A. The relationship between force, mass and acceleration
B. Action-reaction pairs
C. How friction and the normal force are related
D. How inertia affects the motion of an object
Answer:
A force times mass equals acceleration
Explanation:
A batter hits a fly ball into the outfield. The
force is responsible for the ball falling to the ground.
Please answer as soon as possible.
A Physics question about electricity and circuits.
Answer:
Explanation:
Electrical energy is:
E = IVt
E = 210 * 12 * 10\\\\\\E = 25200 J
The __________ lobe contains the area of the cortex involved in auditory processing called the primary __________ cortex.
Answer:
The Temporal lobe contains the area of the cortex involved in auditory processing called the primary Auditory cortex.
Hope this helps :)
Answer:
temporal....auditory (D)
Explanation:
just took the test on edge and got it right
Hypothesis:
Part A
If we split a laser beam by using a diffraction grating slide, then we can
verify the _____________ by applying the formula λ = ds/l.
2) Part B If we split light into its individual wavelengths using a diffraction grating,
then we can determine the _____________ by multiplying the spacing of the
gradient lines (d) times the distance to the central maxima of the color band (s)
divided by the length distance from the grating slide to the screen (l).
Answer:
1.) Wavelength
2.) Number of fringes
Explanation:
1.) If we split a laser beam by using a diffraction grating slide, then we can
verify the wavelength by applying the formula λ = ds/l.
2) If we split light into its individual wavelengths using a diffraction grating,
then we can determine the number of fringes by multiplying the spacing of the gradient lines (d) times the distance to the central maxima of the color band (s) divided by the length distance from the grating slide to the screen (l).
Place the descriptions in the correct categories.
rift valleys
At Convergent Boundaries
At Divergent Boundaries
plates pulling apart
magma breaks through crust
subduction
volcanic mountains
island arc
magma flows from cracks
mid-ocean ridges
Answer:
At Convergent Boundaries:
Subduction
Island arcs
Volcanic mountains
At Divergent Boundaries:
Mid-ocean ridges
Rift valleys
Plates pulling apart
Magma breaks through crust
Magma flows from cracks
Explanation:
A convergent plate boundary is a location where two tectonic plates are moving toward each other, often causing one plate to slide below the other (in a process known as subduction). The collision of tectonic plates can result in earthquakes, volcanoes, the formation of mountains, and other geological events.
A divergent boundary occurs when two tectonic plates move away from each other. Along these boundaries, earthquakes are common and magma (molten rock) rises from the Earth's mantle to the surface, solidifying to create new oceanic crust.
Divergent boundaries occur in the rifts of the oceanic ridge system, including the Mid-Atlantic Ridge and the East Pacific Rise, and in the continental lithosphere by rift valleys such as the famous East African Great Rift Valley.
Answer:
At Convergent Boundaries
subduction
island arc
volcanic mountains
magma breaks through crust
At Divergent Boundaries
mid-ocean ridges
rift valleys
plates pulling apart
magma flows from cracks
Explanation:
A bald eagle moving with constant acceleration increases its speed from 5,000m / s to 12.00m / s over a distance of 200.0m. How long does it take you to do this?
a)4.849s
b)23.53s
c)28.95s
d)11.76s
Answer:
dont know answer
Explanation:
plss ask from any one
A 41 turn rectangular coil of dimensions 5.00 cm ✕ 10.0 cm is allowed to fall from a position where B = 0 to a new position where B = 0.520 T and the magnetic field is directed perpendicular to the plane of the coil. Calculate the magnitude of the average emf that is induced in the coil if the displacement occurs in 0.330 s.
Explanation:
We have,
Number of turns in a coil is 41
Dimensions of a rectangular coil is 5 cm by 10 cm
Initial magnetic field is 0 and new field is 0.52 T. The magnetic field is directed perpendicular to the plane of the coil.
It is required to find the magnitude of the average emf that is induced in the coil if the displacement occurs in 0.330 s. According to Faraday's law,
[tex]E=\dfrac{-d\phi}{dt}[/tex]
[tex]\phi[/tex] = magnetic flux
[tex]E=\dfrac{-d(NBA)}{dt}\\\\E=NA\dfrac{-(B_f-B_i)}{dt}\\\\E=41\times 0.005\times \dfrac{(0.52)}{0.33}\\E=0.32\ V[/tex]
So, the magnitude of induced emf is 0.32 V.
If the ammeter is 07 mA and the resistor is 56 ohms what is the voltage ?
So it’s a drawing of a circuit with the ammeter which says 07mA and a resistor of 56 with the Symbol got it
It says if you measured the voltage across the resistor in the circuit, you’d expect it to read?
Answer:
V = 0.0392 volt
Explanation:
given that the
Current I = 0.7 mA
Resistance R = 56 Ohms
According to Ohm's law,
V = IR
Where V is the Voltage in the circuit.
Substitute I and R into the formula
V = 0.7 ×10^-3 × 56
V = 0.0392 volt
The ammeter can be use to read current in a circuit when it is connected to the device in which the resistors are connected in series.
While for the Voltmeter, the resistors are connected in parallel.
A pet hamster runs across the floor at 5.6 m/s for 3.9 s toward the door. How far
does he get?
Answer:
Travelled 21.84m
Explanation:
5.6 metres a second, 3.9 seconds.
5.6×3.9=21.84
I
A 3 C charge and a 6 C charge feel 4 N of force between them. If the 6 C is replaced
with a 3 C what will the new force be?
Answer:
The new force between charges is 2 N.
Explanation:
It is given that, a 3 C charge and a 6 C charge feel 4 N of force between them.
The force between charges is given by :
[tex]F=\dfrac{kq_1q_2}{r^2}[/tex]
r is distance between charges
Original force is :
[tex]4=\dfrac{k(3)(6)}{r^2}\ ....(1)[/tex]
If the 6 C is replaced with a 3 C, new force between them is given by :
[tex]F'=\dfrac{k(3)(3)}{r^2}\ ....(2)[/tex]
Dividing equation (1) and (2) we get :
[tex]\dfrac{4}{F'}=\dfrac{2}{1}\\\\F'=2\ N[/tex]
So, the new force between charges is 2 N.
Na figura a seguir, as duas sequências de pontos indicam as posi-
ções, ao longo do plano da figura, ocupadas pelos móveis MeN
em instantes intervalados de 0,10s. M e N movimentam-se
somente da esquerda para a direita.
Para o
móvel M
Para o
móvel N
Sabe-se que cada quadradinho, na figura, tem lado representando
uma distância de 1,0cm e que os movimentos de MeN são
uniformes.
Admita que
(1) a primeira foto corresponda à origem dos tempos (t = 0);
(2) a origem dos espaços corresponda à posição do móvel M na
quinta foto e do móvel N na sétima foto;
(3) as trajetórias estejam orientadas da esquerda para a direita.
Pedem-se
a) as velocidades escalares dos móveis Me N.
b) as equações horárias dos espaços para os móveis Me N.
Answer: the answer is C
Explanation:
39. Three 12 a resistors are connected in parallel and then connected to a 6.0 V battery. Find
the resulting current. Show your work. This is a two part question.
40. The devices and outlets in each circuit in a household are wired in parallel. The main
reason for this is
a. Plugging in more devices increases the total resistance on the circuit
b. Plugging in more devices decreases the total resistance on the circuit.
c. Unplugging a device does not affect the other devices on the circuit.
d. Connecting the devices in parallel is safer than if they were in series.
Answer:
39.) Current = 1.5 A
40.) B
Explanation:
Given that three 12 Ohms resistors are connected in parallel.
The equivalent resistance R will be
1/R = 1/R1 + 1/R2 + 1/R3
Substitute the values into the formula
1/R = 1/12 + 1/12 + 1/12
1/R = 3/12
Find the reciprocal of both sides
R = 12/3
R = 4 Ohms
From Ohm's law,
V = IR
Where V = 6v
Substitute V and the R into the formula and make current I the subject of formula
6 = I × 4
I = 6/4
I = 1.5 A
Therefore, the resulting current is 1.5 Ampere.
40.) If the devices and outlets in each circuit in a household are wired in parallel, The main reason for this is
Plugging in more devices decreases the total resistance on the circuit.
Because, the sum of resistance of resistors in parallel is less than the least resistance of a resistor is the circuit. Also, they will all share the same amount of voltage because there is no voltage drop.
