Explanation:
v2 = v1 + at
v2 final speed
v1 initial speed
a acceleration
t time
2 = 0 + 4 a
a = 1/2
Help pls, see picture. Will mark Brainliest
Answer:
B
Explanation:
the graph shows the line going up (accelerating) and it isn't curving like d so it doesn't stop accelerating
Hope this helps :)
What makes a good scientific question? (1 point)
o It helps decide the right choice in a situation.
o It directs how to apply knowledge.
O It is answered by observation and evidence.
O It is outside the bounds of natural phenomena.
C. It is answered by observation and evidence.
Good scientific explanations are defined, measurable and controllable. They can be answered by an experiment.
Determining a formula for the change in surface area of a uniform solid sphere of radius r if it's Coefficient of linear expansion is a (assumed constants )and its temperature is changed by DT
Answer:
Explanation:
Area A = 4 pi R^2
lnA = ln(4 pi) + 2 ln R
dA/A = 2 dR/R = 2*(alpha)*dT
delta A = 2A*alpha*(delta T)
OR
A at T + deltaT
delta A = 4 pi (R + deltaR)^2 - A
= 4 pi R(1 + alpha*deltaT)^2 -A
= 4 pi R^2 *[1 + 2*alpha*deltaT +
(alpha*deltaT)^2] - A
= 2*A*alpha*deltaT + A*(alpha*deltaT)^2
(Ignore the second term in deltaT^2)
image formed in a concave
The following diagram shows a
mirror.
object
image
O A. virtual, enlarged, upright
B. real, reduced, upright
C. virtual, enlarged, inverted
D. real, reduced, inverted
The image formed by the concave mirror is virtual, enlarged, and upright. The correct answer is option A.
A concave mirror is a type of spherical mirror that has a reflecting surface that curves inward, resembling the shape of the inner surface of a sphere. The inner surface of the mirror is reflective, while the outer surface is transparent.
Concave mirrors are also known as converging mirrors because they cause parallel incident light rays to converge or come together after reflection. These mirrors are commonly used in various optical devices, such as telescopes, makeup mirrors, and reflector headlights.
Option A states that the image formed by the concave mirror is virtual, enlarged, and upright. Let's break down what each of these terms means in the context of the image formation by a concave mirror:
1. Virtual: A virtual image is formed when the light rays appear to diverge from a point behind the mirror. It cannot be projected onto a screen since the light rays do not actually converge at the image position. In the case of a concave mirror, when the object is located between the mirror and the focal point, a virtual image is formed.
2. Enlarged: An enlarged image is one that appears larger than the object itself. In this case, since the image is virtual, it appears to be larger than the actual size of the object.
3. Upright: An upright image is one that has the same orientation as the object. In the case of a concave mirror, when the object is located between the mirror and the focal point, the image formed is upright.
Therefore, the correct option is A, the image formed by the concave mirror is virtual, enlarged (appears larger than the object), and upright (has the same orientation as the object).
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Jerome is learning how the model of the atom has changed over time as new evidence was gathered. He has images of four models of the atom, but they are not in the correct order.
In what order should Jerome put these models to show the development from the earliest model of the atom to the most recent one?
Y, X, Z, W
Y, Z, W, X
W, Z, X, Y
W, Y, Z, X
Answer:Y,X,Z,W
Explanation:
Answer:
A.
Explanation:
An AC generator consists of eight turns of wire, each having area A =9.0x 10-2 m2, with a total resistance of 12.0 V. The coil rotates in a magnetic field of 0.500 T at a constant frequency of 60.0 Hz, with axis of rotation perpendicular to the direction of the magnetic field. (a) Find the maximum induced emf. [3] (b) What is the maximum induced current? [1] (c) Determine the induced emf and current as functions of time. [2] (d) Wiat maximum torque must be applied to keep the coil turning? (3)
We have that the maximum induced emf,the maximum induced current, the induced emf and current as functions of time,The maximum torque must be applied to keep the coil turning are
a )[tex]E_{max}=135.6v[/tex]
b) [tex]I_max=11A[/tex]
c) [tex]I_i=11A sin(376.9rad/s t)[/tex]
[tex]E_i=135.6v sin(376.9rad/s )[/tex]
d) [tex]T=4.07Nm[/tex]
From the Question we are told that
Area [tex]A =9.0x 10^{-2} m^2[/tex]
Total resistance of [tex]R=12.0 V.[/tex]
Magnetic field of [tex]B=0.500 T[/tex]
Constant frequency [tex]F=60.0 Hz[/tex]
Eight turns [tex]N=8N[/tex]
A)
Generally the equation for the maximum induced emf is mathematically given as
[tex]E=NAB\omega[/tex]
Where
[tex]\omega=2\pi f[/tex]
[tex]\omega=2*3.142*60[/tex]
[tex]\omega=376.9rad/s[/tex]
[tex]E_max=8*(9.0x 10-2)*0.5*376.9[/tex]
[tex]E_{max}=135.6v[/tex]
B)
Generally the equation for the maximum induced Current is mathematically given as
[tex]I_m=\frac{E}{R}\\\\I_max=\frac{135.6}{12}\\\\I_max=11A[/tex]
C)
Generally for the induced emf and current as functions of time we Substitute [tex]E_{max}[/tex] and [tex]\omega[/tex] into
[tex]E_i=E_{max} sin\omega t[/tex]
[tex]E_i=135.6v sin(376.9rad/s t)[/tex]
And Same for induces Current
[tex]I_i=I_{max} sin\omega t[/tex]
[tex]I_i=11A sin(376.9rad/s t)[/tex]
D)
Generally the equation for the maximum torque is mathematically given as
[tex]T = rB sin θ[/tex]
Where
r= maximum magnetic moment
[tex]r=NIAr= 8*11.3*0.090r=8.14m^2[/tex]
Therefore
[tex]T = 8,14*0.500 sin 90[/tex]
[tex]T=4.07Nm[/tex]
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8. A circuit has a 9.0 V battery and 549 mA of current. What is the resistance of the circuit?*
R=
32
*Round your answer to the nearest thousandth if necessarł.
Answer:
Explanation:
E = IR
R = E/I
R = 9.0/0.549
R = 16.393 Ω
Brown is currently producing only corn; if he wants to produce some tobacco, in what order would he switch his fields from corn to tobacco production? What law does this represent? Explain.
Hello some data related to your question is missing attached below is the missing data
From the Table If Brown produces only Corn he will produce 50 but to produce some tobacco Brown will produce 40 Corn and 10 Tobacco to ensure the efficiency of production.
PPF ( production possibility frontier ) is a curve that shows/represent the production of various quantities of two(2) different commodities with the same limited amount of resource. In PPF the efficiency of production is not affected because the Increase in the production of a certain commodity will be balanced with a decrease in production of the other commodity. and The slope of PPF is the Marginal rate of transformation. and opportunity cost is kept constant.
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This is the location of an object.
Yes. This is indeed the location of an object.
Answer:
wdym
Explanation:
not much information
(9.0 X 109)(5.2 X 10-6) (6.5 X 10-6) =
Answer:
981(46) ( 59)
45126(59)
2662434
Explanation:
can you please mark me brainliest pleaseWhat type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?
Hint: Refer to the image of the electromagnetic spectrum at the beginning of the assignment.
Infrared light
Red visible light
Violet visible light
Ultraviolet light
Answer:
infrared light
Explanation:
infrared light
What is an inclined plane? How does it make our work easier?
what is x-rays ? and how it's formed ?
X - rays are highly penetrating electromagnetic radiations that are formed when the cathode rays strikes a dense metal.
It has many characteristics such as :
bears no charge.travels with the speed of light.can ionize gases.atoms are composed of several basic types of very small ____; the ____ of each of these particles gives a different kinds of atoms so unique identity
Answer:
An atom is the smallest unit of matter that retains all of the chemical properties of an element. Atoms combine to form molecules, which then interact to form solids, gases, or liquids. For example, water is composed of hydrogen and oxygen atoms that have combined to form water molecules. Many biological processes are devoted to breaking down molecules into their component atoms so they can be reassembled into a more useful molecule.
Atomic Particles
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged). Atoms have different properties based on the arrangement and number of their basic particles.
The hydrogen atom (H) contains only one proton, one electron, and no neutrons. This can be determined using the atomic number and the mass number of the element (see the concept on atomic numbers and mass numbers).
An object is launched at a 60 degree angle with an initial velocity of 100
m/s. What is the objects height? How long is the object in the air? What is
the objects's range (distance)? *
PLS HELP QUICK LOL
Answer:
Explanation:
The first question asks for the object's height. That is a y-dimension thing so we will use the one-dimensional formula:
[tex]v^2=v_0^2+2a[/tex]Δx and we are looking for delta x, which is the displacement of the object (here, the height since displacement in the y-dimension is height). Before we do that, though, we need to know the initial upwards velocity, which is found in:
[tex]v_{0y}=100sin(60)\\v_{0y}=90\frac{m}{s}[/tex]
And we also have to know from previous physics experience that the final velocity of an object at its max height is 0. Filling in:
[tex]0=(90)^2+2(-9.8)[/tex]Δx
[tex]0=8000-20[/tex]Δx and
-8000 = -20Δx so
Δx = 400 m
Now for the time it was in the air...we will use the simple equation
[tex]v=v_0+at\\0=90-9.8t\\-90=-9.8t\\t=9[/tex]
So the object is in the air for 9 seconds. Now we go to the other dimension, the x-dimension, to find out how far it goes horizontally. We will use the equation:
Δx = [tex]v_0t+\frac{1}{2}at^2[/tex] but first we have to find the horizontal velocity, which is NOT the same as the upwards velocity.
[tex]v_{0x}=100cos(60)\\v_{0x}=50\frac{m}{s}[/tex]
And another thing we need to know prior to solving problems like this is that the acceleration in the x-dimension is ALWAYS 0. Filling in the equation:
Δx = [tex]50(9)+\frac{1}{2}(0)(9)^2[/tex]
Δx = 500 m
The figure above shows 4forces 3N, 10N, 3√3N, and 6N acting on a particle P. The resultant of the four forces is.
As you gave no pic I took them on one lined
F_1=3NF_2=10NF_3=3root 3 NF_4=6N[tex]\\ \sf\longmapsto F_{net}=F_1+F_2\dots[/tex]
[tex]\\ \sf\longmapsto F_{net}=3+10+6+3\sqrt{3}[/tex]
[tex]\\ \sf\longmapsto F_{net}=19+3(1.732)[/tex]
[tex]\\ \sf\longmapsto F_{net}=19+5.196[/tex]
[tex]\\ \sf\longmapsto F_{net}=24.196N[/tex]
A particle is projected from a point on a horizontal plane and has an initial velocity of 28root 3 m/s at an angle of 60 degree .find the greatest heights reached by the particle
Answer:
uujjjjjctc7tox7txr9ll8rz8lr5xl8r6l8dl85x8rl5x8rl5x8rl5xrx8l58rk5xr8l5xr6l8xr68lc
. State two ways in which the molecular structure of a liquid is different from the molecular structure of a solid.
●Liquid
The intermolecular attractive forces are not as strong as solids.The attractive forces are also not strong enough to keep neighbouring molecules in a fixed position. So the molecules are free to move over neighbouring.●Solid
The intermolecular forces between neighboring molecules are strong enough to keep them locked in position.Due to the strong intermolecular forces between neighboring molecules, solids are rigid.
How much net force is required to accelerate a 10 kg mass at 1.5 m/s2?
Answer:
F = 15N
Explanation:
The explanation is on the above photo.
This graph shows that as an object's mass increases its
es )
A)
inertia increases.
B)
inertia decreases.
acceleration increases.
D)
acceleration decreases.
Answer:
(A) inertia increases.
Explanation:
Inertia is the property of mass that resists change so the mass an object has the greater the inertia
An ant crawls 50 cm to the right, stops, and then crawls 30 cm to the left. Calculate the distance that the ant travels, and calculate the displacement of the ant.
Answer and Explanation:
If the ant was to crawl 50cm to the right, then come back 30 cm, then the total distance walked would be 80cm.
- Combine 50cm and 30cm to get 80 cm.
For displacement, the answer is 20 cm.
- When calculating displacement, you use the initial (starting) distance. and subtract that from the final distance, giving you the displacement, or the amount traveled from the starting point to the final point if you were to make a straight line from the starting point to end point. (0 to 50, then back 30 the same direction, so subtract 30 from 50 to get 20)
#teamtrees #PAW (Plant And Water)
I hope this helps!
Answer:
Distance = 80cm
Displacement = 20cm
Explanation:
Distance does not depend on direction, its the total amount traveled.
Displacement has a direction. Displacement is how far your stopping point is from the beginning point.
The ant could have walked 50cm to the east, stopped and turned around, walked 50cm to the west, walking a total distance of 100cm, but the displacement would be 0 because he ended up at the same spot that he started. It can get much more complicated than this, but this is a good start.
If a 0.8 kg object hanging from a spring stretches it by 0.55 m, then by how much will the spring be stretched (in m) if a 1.6 kg object is suspended from it?
A school bus moves at speed of 35mi/he for 20miles. How long will it take for the bus to get to school
Answer:
Time, t = 0.57 hours
Explanation:
It is given that,
Speed of the school bus, v = 35 mi/hr
Distance covered by the bus, d = 20 miles
We need to find the time taken by the bus to get to school. Time taken by the bus is given by :
t = 0.57 hours
So, the time taken by the bus to reach school is 0.57 hours. Hence, this is the required solution.
Which of the following measurement
tools would you need to determine the
weight of an iPad?
A. graduated cylinder
B. double pan balance
C. scale
D. triple beam balance
Answer:
It would be C.scale, because
A. is for liquid
B. is for measuring 2 things
and D. is for i don't know(lol)
but i think the scale would be the easiest way to measer an iPad
You are taking a turn at 30.0 m/s on a ramp of radius 25.0 m. What is your acceleration?
Acceleration = v^2 / r
Acceleration = 30^2/25
Acceleration = 900/25
Acceleration = 36 m/s^2
The heating element of an electric oven is designed to produce 3.9 kW of heat when connected to a 240-V source. What must be the resistance of the element?5)A 120-V hair dryer has two settings: 950 W and 1400 W .a) Determine the resistance at 950 W setting.b) Determine the resistance at 1400 W setting.
The heating element of an electric oven is designed to produce 3.9 kW of heat when connected to a 240-V source. Then the resistance of the element is 14.7Ω
When A 120-V hair dryer has two settings: 950 W and 1400 W then the resistance at 950 W is 15.15Ω and at 1400 W is 10.28Ω.
What is Electric Power ?The pace at which electrical energy is transmitted by an electric circuit is referred to as its power. The watt is the SI unit of power, equal to one joule per second. Watts, like other SI units, have standard prefixes: thousands, millions, and billions of watts are referred to as kilowatts, megawatts, and gigawatts, respectively.
It is a popular misperception that electric power is purchased and sold, whereas electrical energy is. Electricity, for example, is sold to users in kilowatt-hours (kilowatts multiplied by hours), because energy is defined as power multiplied by time.
In this problem,
Given,
Power P = 3.9 KW
Voltage V = 240 V
P = V²/R
3.9 × 10³ = 240²/R
R = 240²/3.9 × 10³
R = 14.7Ω
For hair dryer,
given,
P = 950 W or 1400 W
V = 120 V
P = V²/R
950 = 120²/R
R = 120²/950
R = 15.15Ω
P = V²/R
1400= 120²/R
R = 120²/1400
R = 10.28Ω
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Which action would a physicist most likely take to determine the amount
energy the could be released if an earthquake occurs at fault?
A. Interview people who hake experienced major earthquakes
B. Design tests to measure and compare the energy released by
earthquakes
C. Read historical articles about the effects of past earthquakes
D. Design buildings that can withstand the energy released by
earthquakes
SUBMIT
Answer:
B. Design tests to measure and compare the energy released by
earthquakes
Help me write this three paragraph Physics essay. I'll Venmo you, give me asking price.
Answer:
Physics, or the study of matter, energy, and the interactions between them, helps us to understand the laws and rules that govern the physical world. Not every student will grow up and study physics on a deeper level, but everyone uses basic physics concepts to navigate everyday life.A
Physics is a natural science that involves the study of matter and its motion through space and time, along with related concepts such as energy and force. More broadly, it is the study of nature in an attempt to understand how the universe behaves.Physics helps you to understand the world around you, and satisfy your curiosity. Studying physics develops your critical thinking and problem-solving skills. Physicists are versatile, which opens a wide range of future careers.
please tell me answer please otherwise teacher will beat me fast
Explanation:
a) Use the torque equation to solve for the amount of effort to lift the load:
[tex]\sum{\tau} = Lx_L - Ex_E = 0[/tex]
or
[tex]E = \dfrac{Lx_L}{x_E} = \dfrac{(100\:\text{N})(0.20\:\text{m})}{0.60\:\text{m}}[/tex]
[tex]\:\:\:\:\:=33.3\:\text{N}[/tex]
The mechanical advantage is
[tex]MA = \dfrac{0.60\:\text{m}}{0.20\:\text{m}} = 3[/tex]
The velocity ratio is the same as the MA:
[tex]VR = \dfrac{\text{effort arm}}{\text{load arm}} = MA = 3[/tex]
b) We can use the same equation in (a) to solve the problem:
[tex]\sum{\tau} = Ex_E - Lx_L = 0[/tex]
[tex]\Rightarrow x_L = \dfrac{Ex_E}{L} = \dfrac{(50\:\text {N})(90\:\text{cm})}{300\:\text{N}}[/tex]
[tex]\:\:\:\:\:=15\:\text{cm}[/tex]
c) We can write
[tex]W_RX_R = W_SX_S \Rightarrow X_R = \dfrac{W_SX_S}{W_R}[/tex]
[tex]\:\:\:\:\:= \dfrac{(400\:\text{N})(4\:\text{m})}{500\:\text{N}} = 3.2\:\text{m}[/tex]
d) We can solve the problem as follows:
[tex]\sum{\tau} = Ex_E - Lx_L = 0 \Rightarrow E = \dfrac{Lx_L}{x_E}[/tex]
or
[tex]E = \dfrac{(500\:\text{N})(0.50\:\text{m}}{1.0\:\text{m}} =250\:\text{N}[/tex]
The mechanical advantage MA is
[tex]MA = \dfrac{x_E}{x_L} = \dfrac{1.0\:\text{m}}{0.5\:\text{m}} = 2.0[/tex]
[tex]VR = MA = 2.0[/tex]
[tex]\%\text{eff} = \dfrac{Lx_L}{Ex_E}×100\%[/tex]
[tex]\:\:\:\:\:= \dfrac{(500\:\text{N})(0.5\:\text{m})}{(250\:\text{N})(1.0\:\text{m})}×100\%[/tex]
[tex]\:\:\:\:\:=100\%[/tex]
A vehicle starts from rest and travels 50 m in 5 s. What is its acceleration?
