Answer:beats
Explanation:l got it right gang
Beats effects results from the interference of two sound waves that have slightly different frequencies.
What is beats?
Beats are produced by the superposition of two waves of slightly different frequencies but identical amplitudes. The waves alternate in time between constructive interference and destructive interference, giving the resulting wave a time-varying amplitude.
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A plumber is going to put two pipes in a wall, one in front and one in back. The pipes will be touching once they are installed. Both pipes are the same size and have the same number of molecules. The diagram above shows the pipes now, before they have touched. Use the information in the diagram to answer the question.
How does the temperature of the front pipe compare with the temperature of the back pipe before the pipes touch? What will happen after the pipes have been touching for a while?
Answer:
They become the same exact tempature
Explanation:
Since they got connected it should be the same.
the temperature of the front pipe compare with the temperature of the back pipe before the pipes touch by using same temperature.
what is temperature ?Temperature is the measure of hotness or coldness expressed in terms of any of several arbitrary scales and it indicate the direction in which heat energy will spontaneously flow from a hotter body to a colder body.
It is not the equivalent of the energy of a thermodynamic system like burning match is at a much higher temperature than an iceberg whereas the total heat energy contained in an iceberg.
Temperature which is similar to pressure or density known as intensive property that is independent of the quantity of matter is considered as distinguished from extensive properties, such as mass or volume.
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[tex]\huge\sf\underline\blue{⚓☠Question ☠}[/tex]
An electric iron consumes energy at a rate of 840 W when heating is at the maximum rate and 360 W when the heating is at the minimum. The voltage is 220 V. What are the current and the resistance in each case?
Don't spam
Answer:
See Explanation
Explanation:
We know that;
P= IV
Where;
P = power
I= current
V = voltage
Here, we have a voltage of 220V
Hence, for maximum rate;
P= IV
I = P/V
P = 840 W
V= 220 V
I= 840 W/220 V
I= 3.8 A
V = IR
R = V/I
R = 220/3.8
R = 57.9 Ω
For minimum heating;
P= 360 W
V= 220 V
I = P/V
I = 360 W/220V
I= 1.6 A
V= IR
R = V/I
R = 220 V/1.6 A
R = 137.5 Ω
A uniform electric field, with a magnitude of 449 N/C, is directed parallel to the positive x-axis. If the potential at x= 4.59 m is 966 V, what is the potential at x= 1.61 m?
Answer:
2.334 kV
Explanation:
Since the electric field strength Ecosθ = -ΔV/Δx = -(V₂ - V₁)/(x₂ - x₁)
where V₁ = potential at x₁ = 966 V, x₁ = 4.59 m, V₂ = potential at x₂ = unknown, x₂ = 1.61 m and θ = angle between E and the x - axis.
Given that E = + 449 N/C and since it is directed parallel to the positive x - axis, θ = 0°
So,
Ecosθ = -ΔV/Δx
Ecos0° = -ΔV/Δx
E = -ΔV/Δx
E = -(V₂ - V₁)/(x₂ - x₁)
making V₂ subject of the formula, we have
-E(x₂ - x₁) = V₂ - V₁
-E(x₂ - x₁) + V₁ = V₂
V₂ = V₁ - E(x₂ - x₁)
Substituting the values of the variables into the equation, we have
V₂ = V₁ - E(x₂ - x₁)
V₂ = 966 V - 449 N/C(1.61 m - 4.59 m)
V₂ = 966 V - 449 N/C(-2.98 m)
V₂ = 966 V + 1,338.02 Nm/C
V₂ = 966 V + 1,338.02 V
V₂ = 2,334.02 V
V₂ ≅ 2,334 V
V₂ = 2.334 kV
A 42.2 N force acts at 40* to the ground, causing the object to move a horizontal distance of 8.15 m. How much work was done on the object?
Answer:
W=F.dcos angle
w=42.2 x8.15 x cos40
w=343.93× cos 40
W=343.93 x 0.76
W=261.38 J
Work done on the object will be 264.83 J
What is work done ?Work done is the product of the component of the force in the direction of the displacement and the magnitude of this displacement.
given :
F = 42.2 N
let , x = 40°
horizontal distance (s) = 8.15 m
Work done = F s cos (x)
= F * s * cos (x)
= 42.2 * 8.15 * cos 40° = .766
= 343.93 * 0.77
= 264.83 J
Work done on the object will be 264.83 J
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In a car collision, is it better for the passenger if the change in momentum is over a short period of time or a long period of time?
Explanation:
The force on the passenger will be F = ma
Here, m does not change, but a is the variable.
If the cars slows down very fast, the acceleration will be higher, and thus the force will be higher.
If the acceleration is lower, the force will be lower as well, which would be the most desirable scenario for the passenger.
what is a magnetic field? how could you visualize one?
Answer:
A magnetic field is what causes gravity basically
Explanation:
To visualize a magnetic field think of 2 ovals on the opposite side of each-other, like one oval on the top of a circle and one on the bottom, that's how id visualize it
How will the boat be affected if it enters a part of the river where the current is moving south at 2 m/s?
Answer:
The boat is most likely to crash or sink since the water will be very rapid and pacing.
1. An object of mass 300 kg is observed to
accelerate at the rate of 1 m/s. Calalate the
force required to produce this acceleration.
Answer:
The force required will be "300 N".
Explanation:
The given values are:
Mass of object,
m = 300 kg
Acceleration,
a = 1 m/s
Now,
The force will be:
⇒ [tex]F=m\times a[/tex]
On substituting the values, we get
⇒ [tex]= 300\times 1[/tex]
⇒ [tex]=300 \ N[/tex]
Although not all snakes are poisonous, all snakes may carry what infection?
a
Rabies
b
Polio
c
Tetanus (or Lockjaw)
d
Lyme's disease
Answer:
C
Explanation:
Not A because mammals cant get rabies. Defenently not polio. I think C is the best answer. Lyme disease is caused by ticks, so no.
How many volts flow through a current if it has 550 amps and 50,000 watts
What would happen if we do not eat body building food?
Answer:
you would die and be dead.....
Explanation:
Answer:
You may suffer from muscle weakness.
If you want to build muscles, protein is the way to go.
why is a screw a kind of inclined plane
Describe the role that weathering and erosion play in the rock cycle.
Answer:
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface. Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. Water, acids, salt, plants, animals, and changes in temperature are all agents of weathering and erosion.
plz can i get brainliest
I'm stuck between B and C
In the problem, I know the potential energy increases because the height increases.
A block is at the bottom of a frictionless ramp and is given a kick so that it has some initial velocity and starts to slide up the ramp. There
is no air resistance. Which of the following is true of the energy of the block as it slides?
(A) Its potential energy will increase; its kinetic energy will decrease.
(C) Both its potential and kinetic energies will increase.
(B) Its potential energy will decrease; its kinetic energy will increase.
(D) Both its potential and kinetic energies will decrease.
Answer:
Explanation:
The answer is A. First of all, due to the First Law of Thermodynamics, energy cannot be created or destroyed, it only changes form. That being said, it is impossible for the PE and the KE to both increase or decrease at the same time. The second one starts decreasing, the other starts increasing at the exact same rate. PE exists or is at its highest when an object has the potential to fall to a point lower than it is, and it is at this point where Kinetic energy is the lowest. If this block is kicked UP a ramp, which is odd but there you have it, the potential energy increases as it gets higher off the ground. Because of gravity, and assuming that once the block is kicked, the foot that kicked it is no longer important to it (meaning it's not being pushed up, it's just kicked once and that's it) and it will slow down very quickly. KE exists where there is a great amount of velocity.
The answer is A.
HELP! What are 5 changes that a fidget spinner can be?
Answer:
I would hope they can change this question
How does this relate to Newton's second law?
Two balls with different weights (tennis ball and basket ball) are dropped from the same height to see which one will land first
Answer:
In ideal case, when no resistive forces are present then both the balls will reach the ground simultaneously. This is because acceleration due to gravity is independent of mass of the falling object. i.e. g = GM/R² where G = 6.67×10²³ Nm²/kg², M = mass of earth and R is radius of earth.
Let us assume that both are metallic balls. In such case, we have to take into account the magnetic field of earth (which will give rise to eddy currents, and these eddy currents will be more, if surface area will be more) and viscous drag of air ( viscous drag is proportional to radius of falling ball), then bigger ball will take slightly more time than the smaller ball.
Explanation:
In ideal case, when no resistive forces are present then both the balls will reach the ground simultaneously. This is because acceleration due to gravity is independent of mass of the falling object. i.e. g = GM/R² where G = 6.67×10²³ Nm²/kg², M = mass of earth and R is radius of earth.
Let us assume that both are metallic balls. In such case, we have to take into account the magnetic field of earth (which will give rise to eddy currents, and these eddy currents will be more, if surface area will be more) and viscous drag of air ( viscous drag is proportional to radius of falling ball), then bigger ball will take slightly more time than the smaller ball.
a pine raft (density = 373 kg/m^3) has a volume of 1.43 m^3. How much of the raft's volume is below the water line? Unit is m^3
Answer: 0.5334
Explanation:
i got it right on accellus :p
Volume of value V = 0.5333 [tex]m^{3}[/tex] is below the water line .
What is Archimedes principal ?Archimedes' principle states that a body immersed in a fluid is subjected to an upwards force equal to the weight of the displaced fluid.
F(b) = rho*g*V
F(b) = buoyant force
rho = fluid density
g = acceleration due to gravity
V = fluid volume
given
density of raft = 373 kg/[tex]m^{3}[/tex]
volume of raft = 1.43 [tex]m^{3}[/tex]
since, density = mass / volume
mass of raft = density * volume
= 373 * 1.43 = 533.3 kg
using Archimedes principal
Force = density of liquid * volume of liquid displaced * acceleration due to gravity
mg = 1000 * V * 9.8
533.3 * 9.8 = 1000 * V * 9.8
V = 0.5333 [tex]m^{3}[/tex]
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Which object is an example of a mechanical wave?
A. light from a flashlight
B. microwaves used to heat food
C. police siren
D. sunlight
Answer:
C.
Explanation:
Hope It Helps
brainliest please
Answer:
C. police siren
Explanation:
Sound waves are mechanical waves
How much power is needed to move a 2000 kg mass from the bottom of the 150 m talk great pyramid in Egypt up a ramp if the ramp has a mechanical advantage of 4 and it takes the workers 30 minutes to move the mass?
Answer:
How Heavy? More than 2,300,000 limestone and granite blocks were pushed, pulled, and dragged into place on the Great Pyramid. The average weight of a block is about 2.3 metric tons (2.5 tons).
Explanation:
Four different living organisms are shown on the right. Which statement is true for all of the organisms shown?
Answer:
they are all made of cells
What is a voltage divider?
Answer:
please give me brainlist and follow
Explanation:
In electronics, a voltage divider (also known as a potential divider) is a passive linear circuit that produces an output voltage (Vout) that is a fraction of its input voltage (Vin). Voltage division is the result of distributing the input voltage among the components of the divider.
How would the motion of the book change if there was LESS friction as it moved across the table?
Answer:
The motion of the book would change if there was less friction if it moved across the table is that it would spin and have more kenetic energy.
Explanation:
friction slows stuff down so if it had less friction it would speed up and spin when sliding.
Why are solar storms a concern to Earth?
Can anyone help me with this question please
I’ll mark as brainliest
No links.
the transverse Wave which is Answer:2
Answer:
1
Explanation:
amplitude is the maximum distance from the rest of the particles. amplitude is thus measured from the rest position to the peak of a crest or of a trough.
as seen below, graph 1 has an amplitude of 1 while both graph 2 and 3 has an amplitude of 2.
How old is Earth and what do we use to keep track of major Earth events?
) The unsaturated hydrocarbons whose structures contain a carbon -carbon triple
bond are called ……..
a) Alkenes b) Alkanes c) Alkynes d) Alcohol
Answer:
C. Alkynes
Explanation:
Energy ___________.
is used to do work
can't be converted from one form to another
can be created or destroyed
Answer:
BRAINLIEST PLSSSSSSSSSSSSSSSSSSSSSSSS
Thermodynamics
Explanation:
Thermodynamics is the study of energy. First Law of Thermodynamics: Energy can be changed from one form to another, but it cannot be created or destroyed. The total amount of energy and matter in the Universe remains constant, merely changing from one form to another.
Explain why sounds are fainter at high mountains than sea level
the atomic mass unit (amu) is
a. the mass of a single atom of carbon
b. one millionth of a gram
c. approximately the mass of a proton
d. approximately the mass of an electron
(dont send me a link please)
Answer:
The correct option is (a).
Explanation:
One Atomic mass unit is the mass of an atom. It is defined as the mass of a single carbon -12 at rest.
The relation between amu and kg is given by :
[tex]1\ amu=1.66\times 10^{-27}\ kg[/tex]
Hence, one amu is equal to the mass of a single atom of carbon.
Which is a pollutant associated with high-tech gadgets in landfills?
A. Chromium
B. Steel
C. Carbon Dioxide
D. Hydrogen
Answer:
The answer of this is question is A.
Answer:
A.
Explanation:
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