Answer:
the answer is A!! 2560 J
A piano wire has a tension of 650 N and a mass per unit length of 0.060 g/cm. What is the speed of waves on this wire
Answer:
The speed of waves on this wire is 329.14 m/s
Explanation:
Given;
tension of the wire, T = 650 N
mass per unit length, μ = 0.06 g /cm = 0.006 kg/m
(convert the unit of mass per length in g/cm to kg/m by dividing by 10 = 0.06 / 10 = 0.006 kg/m)
The speed of waves on this wire is given as;
[tex]v = \sqrt{\frac{T}{\mu} } \\\\v = \sqrt{\frac{650}{0.006} }\\\\v = 329.14 \ m/s[/tex]
Therefore, the speed of waves on this wire is 329.14 m/s
Amy finds the voice of her text-to-speech tool annoying. What should she do?
try to change the voice
stop using the tool
turn down the volume
reprogram the tool
Answer:
A
Explanation:
How many joules of work are done on a box when a force of 25 N pushes it 3 m?
Answer:
75joules
Explanation:
Workdone = force x distance
workdone = 25 x 3
workdone = 75joules
How can you increase the gravitational potential energy (GPE) of an empty shoe box on the bottom shelf of a bookcase
Answer:
Add items to the box
Explanation: I did the test
Answer:
Add some Items to it.
Explanation:
A student claimed that thermometers are useless because a thermometer always registers its own
temperature. How would you respond?
Answer:
I wud respond no, actually it registers ur temperature
A laser beam is incident on two slits with a separation of 0.220 mm, and a screen is placed 4.80 m from the slits. If the bright interference fringes on the screen are separated by 1.60 cm, what is the wavelength of the laser light
Answer:
λ = 7.333 x 10⁻⁷ m = 733.3 nm
Explanation:
We can use the formula of fringe spacing from Young's Double Slit Experiment, to find the wavelength of light:
Δx = λL/d
where,
Δx = fringe spacing = 1.6 cm = 0.016 m
λ = wavelength of laser light = ?
L = Distance between slits and screen = 4.8 m
d = slit separation = 0.22 mm = 0.00022 m
Therefore, using these values in the given equation, we get:
0.016 m = (λ)(4.8 m)/(0.00022 m)
λ = (0.016 m)(0.00022 m)/(4.8 m)
λ = 7.333 x 10⁻⁷ m = 733.3 nm
Is this a scientific model? Use complete sentences to explain why or why not.
Answer:
Yes
Explanation:
This is a scientific model as it represents complex objects, events, and a physical process. It has detail and an image that is relevant and helps to understand the process if that's water cycle.
If the original experiment is repeated with a 1.0 kg aluminum block, what is the final temperature of the water and block
Answer:
T₂ = 36.36°C
Explanation:
The complete question is:
A 0.5 kg block of aluminum (Caluminum = 900J/kg*C)is heated to 200 C. The block is then quickly placed in an insulated tub of cold water at 0C (Cwater=4186J/kg*C) and sealed. At equilibrium, the temperature of the water and block are measured to be 20C.
A) If the original experiment is repeated with a 1.0 kg {kg} aluminum block, what is the final temperature of the water and block?
Answer: We will apply the law of conservation of energy here:
Heat Loss by Aluminum Block = Heat Gained by Water
m₁C₁ΔT₁ = m₂C₂ΔT₂
where,
m₁ = mass of aluminum block
C₁ = Specific Heat Capacity of Aluminum Block = 900 J/kg °C
ΔT₁ = Change in Temperature of Aluminum Block
m₂ = mass of water
C₂ = Specific Heat Capacity of Water = 4186 J/kg °C
ΔT₂ = Change in Temperature of water
Therefore, for initial given condition:
m₁ = 0.5 kg
ΔT₁ = 200°C - 20°C = 180°C
m₂ = ?
ΔT₂ = 20°C - 0°C = 20°C
Therefore,
(0.5 kg)(900 J/kg °C)(180°C) = m₂(4186 J/kg °C)(20°C)
m₂ = 81000 J/(83720 J/kg)
m₂ = 0.97 kg
Now, we have the mass of water. So, we can solve for the final equilibrium temperature if the mass of block is changed to 1 kg. So, for the new state:
m₁ = 1 kg
m₂ = 0.97 kg
ΔT₁ = 200°C - T₂
ΔT₂ = T₂ - 0°C
T₂ = Final Equilibrium Temperature = ?
Therefore,
(1 kg)(900 J/kg °C)(200°C - T₂) = (0.97 kg)(4186 J/kg °C)(T₂ - 0°C)
180000 J - (900 J/°C)(T₂) = (4050 J/°C)(T₂)
180000 J = (900 J/°C)(T₂) + (4050 J/°C)(T₂)
T₂ = (180000 J)/(4950 J/°C)
T₂ = 36.36°C
A circuit is complete when there is a ___ path for electricity to travel from one end
of the energy source to the other end.
a.) continuous path
b.) zig zag path
c.) random path
d.) broken path
A circuit is complete when there is a continuous path for electricity to travel from one end of the energy source to the other end.
What is electric circuit?Electric circuit: a way for current to travel. A battery or generator, a device that provides energy to the charged particles that make up the current, a device that uses current, such as a lamp, an electric motor, or a computer, and the connecting wires or transmission lines make up an electric circuit. Ohm's law and Kirchhoff's rules are two fundamental laws that quantitatively define how electric circuits function.
Several categories are used to categorise electric circuits. One-way current only flows through a direct-current circuit. As in most residential circuits, an alternating-current circuit transports current that pulses back and forth repeatedly every second.
Learn more about electric circuit here:
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A lever, inclined plane, pulley, wedge,
screw, and
and axle are all
types of simple machines.
O driving
O wheel
A lever, wheel, inclined plane, pulley, wedge, screw, and axle are all types of simple machines.
What is a simple machine?A simple machine can be described as a mechanical device that changes the direction or magnitude of a force. The simplest mechanisms use mechanical advantage to multiply force. A simple machine such as Lever, Wheel and axle, Pulley, Inclined plane, Wedge, and Screw.
A simple machine utilizes a single exerted force to do work against a single load force. Ignoring friction, the work done is equal to the work done by the force.
Simple machines are termed the elementary "building blocks" of which all more complicated machines are composed. The mechanical advantage of a machine is the product of the mechanical advantages of the simple machines of which it is composed.
Learn more about the simple machines, here:
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Today, the universe is considered to be in which shape?
Answer:
is it a spear
Explanation:
How fast is the runner moving between 2-3 seconds? Is the other question please help
Answer:
Concept: Physics analysis
We have a distance vs time graph That indicates that we are analyzing the distance traveled by either a person or a particle The runner starts at 4 meters and over the interval of a second runs to 12 meters reaching the 16 meter mark. The runner stood at 16 meter mark for one full second and then runs back 10 meter over the course of one second reaching 6 meter. The runner runs forward again for a second traveling 6 meters, ending at the 12 meter mark.QUICK!! What class of lever is this image depicting?
1st class
2nd class
3rd class
4th class
Answer:
4th
Explanation:
Answer:
4th
Explanation:
Janet jumps horizontally off a high diving platform with a velocity of 2.63 m/s and lands in the water 1.9 s later. How high is the platform
Answer:
The height of the platform is 22.686 m.
Explanation:
Given;
initial velocity of Janet, u = 2.63 m/s
time of her motion, t = 1.9 s
The height of the platform is given by;
h = ut + ¹/₂gt²
substitute the given values and solve for height "h"
h = (2.63 x 1.9) + ¹/₂(9.8)(1.9)²
h = 4.997 + 17.689
h = 22.686 m
Therefore, the height of the platform is 22.686 m.
A 135 kg horizontal platform is a uniform disk of radius 1.95 m and can rotate about the vertical axis through its center. A 63.7 kg person stands on the platform at a distance of 1.05 m from the center, and a 30.1 kg dog sits on the platform near the person 1.33 m from the center. Find the moment of inertia of this system, consisting of the platform and its population, with respect to the axis.
Answer:
the moment of inertia is 380.14 kg-m^2
Explanation:
The computation of the moment of inertia is as follows:
The net moment of inertia is
= MR^2 ÷ 2 + m_p d_p^2 + m_d d_d^2
= 135 × 1.95^2 ÷2 + 63.7 × 1.05^2 + 30.1 × 1.33^2
= 380.14 kg-m^2
hence, the moment of inertia is 380.14 kg-m^2
We simply applied the above formula so that the correct value could come
And, the same is to be considered
The amplitude of oscillations reduces to one-sixth of its original value in 10 oscillations. Find the logarithmic decrement.
Answer:
Explanation:To describe a damped harmonic oscillator, add a velocity dependent term, bx, where b is the vicious damping coefficient.
A 1990 kg car moving at 20.0 m/s collides and locks together with a 1540 kg car at rest at a stop sign. Show that momentum is conserved in a reference frame moving at 10.0 m/s in the direction of the moving car.
Answer:
The momentum before collision and momentum after collision is equal in a frame of reference moving at 10.0 m/s in the direction of the moving car.
Explanation:
[tex]m_1[/tex] = Mass of moving car = 1990 kg
[tex]u_1[/tex] = Velocity of moving car in stationary frame = 20 m/s
[tex]m_2[/tex] = Mass of stationary car = 1540 kg
[tex]u_2[/tex] = Velocity of stationary car in stationary frame = 0 m/s
v = Combined velocity in stationary frame
Momentum conservation for stationary frame
[tex]m_1u_1+m_2u_2=(m_1+m_2)v\\\Rightarrow v=\dfrac{m_1u_1+m_2u_2}{m_1+m_2}\\\Rightarrow v=\dfrac{1990\times 20+0}{1990+1540}\\\Rightarrow v=\dfrac{3980}{353}\ \text{m/s}[/tex]
In frame moving at 10 m/s the velocities change in the following ways
[tex]u_1=20-10\\\Rightarrow u_1=10\ \text{m/s}[/tex]
[tex]u_2=0-10\\\Rightarrow u_1=-10\ \text{m/s}[/tex]
[tex]v=\dfrac{3980}{353}-10\\\Rightarrow v=\dfrac{450}{353}\ \text{m/s}[/tex]
Momentum before collision
[tex]m_1u_1+m_2u_2=1990\times 10+1540\times -10\\\Rightarrow m_1u_1+m_2u_2=4500\ \text{kg m/s}[/tex]
Momentum after collision
[tex](m_1+m_2)v=(1990+1540)\times \dfrac{450}{353}\\\Rightarrow (m_1+m_2)v=4500\ \text{kg m/s}[/tex]
The momentum before collision and momentum after collision is equal. So, the momentum is conserved in a reference frame moving at 10.0 m/s in the direction of the moving car.
If a net force is acting on an object, then the object is definitely
at rest
Оа
Ob
с
moving at a constant velocity
being accelerated.
losing mass
Od
Answer:
it is being accelerated
Explanation:
So basically there is this chart and all you just to name what energy will transform into what energy so like here is just an example like solar to mechanical or something like sorry the arrows are a bit scuffed
Answer:
free points let's gooo
Light is shone on a diffraction grating
with d = 1.00 x 10-6 m. The second
order (m = 2) maximum occurs at an
angle of 74.6º. What is the
wavelength of the light IN
NANOMETERS?
[?] nm
Hint: The answer will be between 400 and 700.
Answer:
λ = 482.05 nm
Explanation:
The diffraction phenomenon and the diffraction grating is described by the expression
d sin θ = m λ
where d is the distance between two consecutive slits, λ the wavelength and m an integer representing the order of diffraction
in this case they indicate the distance between slits, the angle and the order of diffraction
λ = [tex]\frac{d sin \theta }{m}[/tex]d sin θ / m
let's calculate
λ = 1.00 10⁻⁶ sin 74.6 / 2
λ = 4.82048 10⁻⁷ m
Let's reduce to nm
λ = 4.82048 10⁻⁷ m (10⁹ nm / 1 m)
λ = 482.05 nm
If mechanical energy is converted to thermal energy, then the spring would not compress as far as it would otherwise. This will cause the spring constant to be lower than it really is.
a. True
b. False
Answer:
False.
Explanation:
Given that if mechanical energy is converted to thermal energy, then the spring would not compress as far as it would otherwise. This will cause the spring constant to be lower than it really is.
This statement is false. Because if mechanical energy is converted to thermal energy, there will be distortions in the solid pattern of the spring. And this will make the spring to compress.
Also, no matter what may happen to the spring, the spring constant remains constant. That is, unchanged.
A total charge Q is uniformly distributed through-out a spherical volume of radius a. Which of the following is a dimensionally correct expression for the potential difference between the center of the sphere and its surface?
a. (1/8πε0)Q
b. (1/8πε0)Qa^2
c. (1/8πε0)Qa
d. (1/8πε0)Q/a
e. (1/8πε0) Q/a^2
Answer:
d. (1/8πε0)Q/a
Explanation:
The potential difference [tex]v = \dfrac{1}{4 \pi \epsilon _0} \dfrac{Q}{r}[/tex]
[tex]= (\dfrac{1}{4 \pi \epsilon _0}Q) \dfrac{1}{r}[/tex]
Suppose we separate the quantity [tex](\dfrac{1}{4 \pi \epsilon _0}Q)[/tex] which is dimensionally and equally the same as [tex](\dfrac{1}{8 \pi \epsilon _0}Q)[/tex]. Then, we will have [tex]\dfrac{1}{r}[/tex] and [tex]\dfrac{1}{a}[/tex] as the same dimension.
Therefore, the correct option is:
d. (1/8πε0)Q/a
A mouse is running across a room with a speed of 2.2 m/s. The mass of the mouse is 1.4 kg. What is the Kinetic Energy of the mouse?
Answer:
3.39 JExplanation:
The kinetic energy of an object can be found by using the formula
[tex]k = \frac{1}{2} m {v}^{2} \\ [/tex]
m is the mass
v is the velocity
From the question we have
[tex]k = \frac{1}{2} \times 1.4 \times {2.2}^{2} \\ = 0.7 \times 4.84 \\ = 3.388 \: \: \: \: \: \: \: \: \: [/tex]
We have the final answer as
3.39 JHope this helps you
Answer:
im not sure
Explanation:
Suppose a NASCAR race car rounds one end of the Martinsville Speedway. This end of the track is a turn with a radius of approximately 57.0 m . If the track is completely flat and the race car is traveling at a constant 30.5 m/s (about 68 mph ) around the turn, what is the race car's centripetal (radial) acceleration
Answer:
[tex]a=16.32\ m/s^2[/tex]
Explanation:
Given that,
The radius of the track, r = 57 m
The speed of a race car, v = 30.5 m/s
We need to find the centripetal acceleration of the car. Its formula that is use to find it is given by :
[tex]a=\dfrac{v^2}{r}\\\\a=\dfrac{(30.5)^2}{57}\\\\=16.32\ m/s^2[/tex]
So, the car's centripetal acceleration is [tex]16.32\ m/s^2[/tex].
I need help with this please thank you!
D. A beam balance does not measure mass; it measures weight. The gravitational force of attraction between the earth and an object depend on the mass of the object. ... The beam balance measures the force F exerted by the mass on the beam balance
Which requires more work: lifting a 100 kg sack a vertical distance of 2 m or lifting a 50 kg sack a vertical distance of 4 m?Explain.
Answer:
They both require the same amount of work.
Explanation:
Work is said to be done if the force applied to a body cause the boody to move through a distance. Mathematically;
Workdone = Force * Distance
Workdone = mass * acceleration due to gravity * Distance
For the 100kg sack lifted through a distance of 2m:
Workdone = 100 * 9.8 * 2
Workdone = 980 * 2
Workdone = 1960Joules
For 50kg sack lifted through a distance of 4m;
Workdone = 50 * 9.8 * 4
Workdone = 200 * 9.8
Workdone = 1960Joules.
Since the workdone in carry both sack is the same, hence they both require the same amount of work.
Atoms are split at power plant to create electricity*
O A. Radiant to Mechanical
O B. Nuclear to Electrical
O C. Chemical to Radiant
D. Mechanical to Electrica;
help please I’m in a test that closes at 6
Answer:
B. Nuclear to Electrical
Explanation:
Atoms are split at power plants to create electricity. The energy conversion in this process is from nuclear to electrical energy.
When atoms are split, nuclear energy is released. Some part of the mass of the atom is converted to energy. The nuclear energy released is expressed as heat energy. This energy is used to heat water in boilers when produces steam that are used to drive the movement of turbines. This in turn generates electricity.How does increasing the starting height affect the final speed?
Answer:
To investigate into how the height of a ramp affects the speed of a toy car rolled down a hill or slope because the higher the ramp the more Gravitational potential Energy (GPE), the more kinetic energy converted and the car will go faster. So the ramp increases, the velocity will also increase.
Explanation:
Which is the pathway for information through a neuron?
dendrite → axon → cell body → axon terminals
axon terminals → axon → cell body → dendrite
dendrite → cell body → axon → axon terminalsWhich structures produce a fluid to protect the body in the first line of defense? Select four options.
hair
stomach
mouth
eyes
skin
cell body → dendrite → axon → axon terminals
Answer:
cell body → dendrite → axon → axon terminals
Explanation:
im in edgunity
9. Two moving objects will change their motion if which of the following is true? a.There is no friction on the objects. b. The objects collide with each other. c.One object is heavier than the other. d.The objects are moving in space.
Answer:
lol
Explanation:
lolllll i need points sorry
