Answer:
sound waves enter the outer ear and travel through a narrow passageway called the ear canal, which leads to the eardrum. The eardrum vibrates from the incoming sound waves and sends these vibrations to three tiny bones in the middle ear.
Explanation:
How does image differ from shadow?
Answer:
Image is formed by the reflection of light rays by an object. Image has the colour of the object. ... Shadow is formed by the obstruction of light by an opaque object. Shadow is always black.
Image is formed by the reflection of light rays by an object. Image has the colour of the object.
Shadow is formed by the obstruction of light by an opaque object. Shadow is always black.
What are possible units for impulse? Check all that apply.
▪️kg•m
▪️kg• m/s
▪️N•s
▪️N•m
▪️N•m/s
Answer:
kg.m/s
Explanation:
it is a division of a mass and a speed
A solid sphere a solid cylinder, and a hoop each have the same mass and radius. If they are spinning at the same angular velocity, which one has the greatest rotational kinetic energy
Answer:
KE = 1/2 I * w^2 where I = moment of inertia and w the angular velocity
The hoop has all of it mass at a distance of R from the axis of rotation,
I = M R^2 for the hoop, the others have values of I that are less that of the hoop.
Allison pulls a sled up a hill, which has an incline of 20 degrees to the horizontal. Of the sled has a mass of 20 kg, and the coefficient of kinetic friction between the sled and the ground is 0.1, what is the minimum force Allison must apply to the sled to keep it moving forward at a constant speed
Answer:
[tex]F=48.62N[/tex]
Explanation:
From the question we are told that:
Angle [tex]\theta= 20[/tex]
Mass [tex]m= 20kg[/tex]
Coefficient of kinetic friction [tex]\mu=0.1[/tex]
Generally the equation for Force Required to jeep sled moving is mathematically given by
[tex]F= mg sin \theta - \mu N[/tex]
Where N is normal force
[tex]F_N=Wcos\theta[/tex]
[tex]F_N=20*9.8*cos 20[/tex]
[tex]F_N=184.18N[/tex]
Therefore
[tex]F= (20*9.8) sin 20 - (0.1) (184.18)[/tex]
[tex]F=48.62N[/tex]
A hovering mosquito is hit by a raindrop that is 45 times as massive and falling at 8.2 m/s , a typical raindrop speed. How fast is the raindrop, with the attached mosquito, falling immediately afterward if the collision is perfectly inelastic
Answer:
The speed of the raindrop and the mosquito is 8.02 m/s.
Explanation:
mass of mosquito = m
mass of drop = 45 m
initial velocity of mosquito, u = 0 m/s
initial velocity of drop, u' = 8.2 m/s
During the inelastic collision, the momentum of the system is conserved.
Let the speed of rain drop and the mosquito is v.
Use the conservation of momentum
m x u + 45 m x u' = (m + 45 m) v
m x 0 + 45 m x 8.2 = 46 m x v
v = 8.02 m/s
You are on a train that is traveling at 3.0 m/s along a level straight track. Very near and parallel to the track is a wall that slopes upward at a 12 angle with the horizontal. As you face the window (0.90 m high, 2.0 m wide) in your compartment, the train is moving to the left, as the drawing indicates. The top edge of the wall first appears at window corner A and eventually disappears at window corner B. How much time passes between appearance and disappearance of the upper edge of the wall
Questions Diagram is attached below
Answer:
[tex]T=2.08s[/tex]
Explanation:
From the question we are told that:
Speed of Train [tex]V=3.0m.s[/tex]
Angle [tex]\theta=12\textdegree[/tex]
Height of window [tex]h_w=0.90m[/tex]
Width of window [tex]w_w=2.0m[/tex]
The Horizontal distance between B and A from Trigonometric Laws is mathematically given by
[tex]b=\frac{0.9}{tan12}[/tex]
[tex]b=4.23[/tex]
Therefore
Distance from A-A
[tex]d_a=2.0+4.23[/tex]
[tex]d_a=6.23[/tex]
Therefore
Time Required to travel trough d is mathematically given as
[tex]T=\frac{d_a}{v}[/tex]
[tex]T=\frac{6.23}{3}[/tex]
[tex]T=2.08s[/tex]
What do the planets Saturn, Neptune, and Uranus have in common?
A. They are all smaller than Earth.
B. They are the closest to the Sun.
C. They are all outer planets.
D. They are all inner planets.
Answer:
they are all outer planets
g A circular swimming pool has a diameter of 10 m, the sides are 4 m high, and the depth of the water is 3 m. How much work (in Joules) is required to pump all of the water over the side
Answer:
[tex]W=2.69*10^{6}J[/tex]
Explanation:
Generally the equation for momentum is mathematically given by
Diameter [tex]d=10m[/tex]
Radius [tex]r =\frac{d}{2}=>5m[/tex]
Height [tex]h=4m[/tex]
Depth [tex]d=3m[/tex]
Generally the equation for Area of the circle is mathematically given by
[tex]A=\pi r^2[/tex]
[tex]A=\pi 5^2[/tex]
[tex]A=78.5m^2[/tex]
Generally the equation for Work done is mathematically given by
[tex]d_w=d_f*x[/tex]
Where
[tex]d_f=(\rho*d_v)*g[/tex]
Therefore
[tex]d_w=((\rho*d_v)*g)*x[/tex]
[tex]d_w=((1000*78.5)*9.8)*x dx[/tex]
[tex]d_w=769300x dx[/tex]
[tex]W=\int dw[/tex]
[tex]\int dw=769300 \int^4_{3}x dx[/tex]
[tex]W=(769300\2)*7[/tex]
[tex]W=2.69*10^{6}J[/tex]
The current in the wire (blue) is directed to the right. A conducting loop (green) is in the plane of the wire. The current is increasing with time. Find the direction of current in the conducting loop, if any.
Image of the blue and green wire is missing, so i have attached it.
Answer:
Counterclockwise
Explanation:
We are told that the current is increasing with time. Now, if the current is increasing, it means that the flux going through the wire loop will also be increasing.
Now, according to Lenz law of electromagnetic induction, from the right hand rule, the right thumb points In the counterclockwise direction and so the current will flow in the anti clockwise direction to counter the effect of the magnetic filed being projected outside the loop.
A car starting from rest has a constant acceleration of 4 meters per second per second. How fast will it be going in 5 seconds?
Answer:
18 m
Explanation:
Given : vo = 0 m/s ; t = 3 s; a = 4 m/s^2 ; d = ? m ; average velocity = ? m/s ; fonal velocity = ? m/s
solving for the final velocity, v
v = a * t
v = 4 m/s^2 * 3 s
v = 12 m / s
Solving for the average velocity. avg v
avg v = (vo + v) / 2
avg v = (0 m / s + 12 m/s) / 2
avg v = 6 m / s
Solving for the distance traveled after 3 s
d = avg v * t
d = 6 m / s * 3 s
d = 18 meters
In the first 3s the car travels 18 meters.
If a car starting from rest has a constant acceleration of 4 meters per second per second, then it would be going at a speed of 20 m / s.
What are the three equations of motion?There are three equations of motion given by Newton,
v = u + at
S = ut + 1/2 × a × t²
v² - u² = 2 × a × s
As given in the problem, a car starting from rest has a constant acceleration of 4 meters per second per second,
By using the first equation of the motion,
v = u + at
v = 0 + 4 × 5
v = 20 m / s
Thus,If a car starting from rest has a constant acceleration of 4 meters per second per second, then it would be going at a speed of 20 m / s.
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Match each date to the correct description.
1. autumnal equinox
June 21
2. vernal equinox
September 22
3. longest day in Northern Hemisphere
December 22
4. longest day in Southern Hemisphere
March 21
June 21: longest day in Northern Hemisphere
December 22: longest day in Southern Hemisphere
September 22: autumnal equinox
march 21: vernal equinox
Answer:
Autumnal Equinox: September 22nd
Vernal Equinox: March 21st
Longest day in the Northern Hemisphere: June 21st
Longest day in the Southern Hemisphere: December 22nd
Explanation:
I hope this helps! <3
A good-quality measuring tape can be off by 0.58 cm over a distance of 22 m. What is its percent uncertainty
Answer:
22 m = 2200 cm
.58 / 2200 = .00026 = .026 %
Percent error = +_ .026
Research indicates that genetics does not influence levels of aggression.
Please select the best answer from the choices provided
True or
False
Answer:
False
Explanation:
Took the test and got a 100%
The statement " Research indicates that genetics does not influence levels of aggression." is False.
What is genetics?Genetics is the branch of biology that studies genes, heredity, and genetic variation in living organisms. It involves the study of how traits and characteristics are passed down from one generation to another through the genetic material, such as DNA, that is contained in the chromosomes of cells. Genetics plays a crucial role in understanding the development, growth, and functioning of organisms, as well as the causes and treatment of genetic diseases.
Here in the Question,
The statement that "genetics does not influence levels of aggression" is not entirely accurate. While there is no single gene that determines aggressive behavior, research has shown that genetics can play a role in influencing aggression.
Studies have found that certain genes are associated with increased risk for aggressive behavior, including those involved in the regulation of neurotransmitters such as serotonin and dopamine, which are known to affect mood and behavior. Additionally, environmental factors can interact with genetic factors to increase or decrease the expression of genes that influence aggression.
So, it is important to note that genetics is not the sole determinant of aggression. Environmental factors, such as childhood experiences, exposure to violence, and social and cultural influences, also play a significant role in shaping behavior.
Therefore, it is more accurate to say that aggression is a complex interplay between genetic and environmental factors.
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Ftension = 120 N
10 kg
Fg
What is the weight (not mass) of the box?
O 10 kg
0 19 N
Ô 98 N
O 98 kg
Answer:
98Kg
Explanation:
Part
A block of mass 2 kg is acted upon by two forces: 3 N (directed to the left) and 4 N (directed to the right). What can you say about the blocks motion?
Answer:
Explanation:
the block will move to the right side with small velocity because the force from the left side greater than force from right side. Velocity will be less because of friction and gravitational attraction.
If a block of mass 2 kg is acted upon by two forces: 3 N (directed to the left) and 4 N (directed to the right), then the block would move towards the right side.
What is Newton's second law?Newton's Second Law states that The resultant force acting on an object is proportional to the rate of change of momentum.
As given in the problem statement If a block of mass 2 kg is acted upon by two forces: 3 N (directed to the left) and 4 N (directed to the right),
The net force acting on the block = 4 Newtons - 3 newtons
= 1 Newton
Thus, we can say that the block would move to the right side.
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What is the voltage drop across the 10.0 alpha resistor
Answer:
wow so cool the answer is vr 10
In an experiment similar to the one you performed in Week 3, an experimenter measures the count rate of a radioactive element 100 times, calculates the mean and standard deviation of the data, and organizes the data into four bins:
Interval Number of Occurrences
n < n 15
< n < n 50 - 15
n < n < + 38
n > n + 12
The experimenter expects a Gaussian distribution. (For simplicity, assume 68 % of the counts fall within one standard deviation of the mean rather than the more exact value of 68.27 \%.) What is x?
Answer:
The answer is "1.5625".
Explanation:
Please find the complete question with its solution file in the attachment.
3. A small statue is recovered in an archaeological dig. Its weight is measured to be 96 lb, and its volume 0.08 ft3. a. What is the statue’s weight density?
Answer:
[tex]d=1200\ lb/ft^3[/tex]
Explanation:
Given that,
The weight of the statue, m = 96 lb
The volume of the statue = 0.08 ft³
We need to find the statue’s weight density. We know that the density of an object is the mass of an object divided by its volume. So,
[tex]d=\dfrac{m}{V}\\\\d=\dfrac{96\ lb}{0.08\ ft^3}\\\\d=1200\ lb/ft^3[/tex]
So, the density of the statue is equal to [tex]1200\ lb/ft^3[/tex].
Question 23 of 33 Which phrase best describes when kinetic friction occurs? A. When two surfaces are moving relative to each other B. When one object is resting on another C. When two surfaces are in contact but not moving relative to eatn other D. When balanced forces are acting on an object
Answer:
A. When two surfaces are moving relative to each other.
Explanation:
It is also know as dynamic friction
what is the length of x of the side of the triangle below?
Which of the following statements is NOT true?
Answer:
D
Explanation:
hope i helped ya :D
Answer: The magnetic poles of Earth are at the same locations of as the geographic poles is false.
Explanation:
what is hydrofluorocarbon
Answer:
Hydrofluorocarbons (HFCs) are man-made organic compounds that contain fluorine and hydrogen atoms, and are the most common type of organofluorine compounds. Most are gases at room temperature and pressure.
Answer:
Hydrofluorocarbons (HFC) are man-made organic compounds that contain fluorine and hydrogen atoms and are the most common type of organofluorine compounds. Most are gases at room temperature and pressure. HFCs are produced synthetically and are used primarily as refrigerants. In general, they are relatively non-flammable, chemically stable, and nonreactive.
Which statement describe. good hypothesis ? Check all that apply
a 4 kg block of iron weighs about
a.) 4 N
b.) 40 N
c.) 0.4 N
d.) more than 400 N
Answer:
40 N
Explanation:
[tex]w = mg \\ w = 4 \times 9.81 \\ w = 39.24 = 40 \: [/tex]
A stalled car is being pushed up a hill at constant velocity by three people. The net force on the car is Group of answer choices Zero down the hill and greater than the weight of the car. down the hill and equal to the weight of the car up the hill and equal to the weight of the car. up the hill and greater than the weight of the car.
Answer:
Zero
Explanation:
Net force can be defined as the vector sum of all the forces acting on a body or an object i.e the sum of all forces acting simultaneously on a body or an object.
Mathematically, net force is given by the formula;
[tex] Fnet = Fapp + Fg[/tex]
Where;
Fnet is the net force.
Fapp is the applied force.
Fg is the force due to gravitation.
In this scenario, a stalled car is being pushed up a hill at constant velocity by three people. Thus, the net force on the car is zero because all the forces acting on any physical object is equal to zero and represents a constant velocity; by balancing or cancelling each other out.
According to Sir Isaac Newton's First Law of Motion which is known as Law of Inertia, it states that an object or a physical body in motion will continue in its state of motion at continuous velocity (the same speed and direction) or, if at rest, will remain at rest unless acted upon by an external force.
true or False? PLEASE HELP ME
Answer:
a. True - Joules is the unit measure for energy.
b. False - Potential energy is associated with position
c. False - Kinetic energy is associated with movement.
d. False - It's climbing, which means it also has kinetic energy.
A 0.160 kg hockey puck is moving on an icy, frictionless,horizontal surface. At t = 0 the puck is moving to theright at 2.40 m/s.
(a) Calculate the magnitude of the velocity of the puck after a force of 37.0 N directed to the right has been applied for 0.050 s.
a. +x direction.
b. +y direction.
c. -x direction.
d. -y direction.
(b) If instead, a force of 13.3 Ndirected to the left is applied from t = 0 to t =0.050 s, what is the final velocity of the puck?
a. +x direction.
b. +y direction.
c. -x direction.
d. -y direction.
Answer:
a. 13.96 m/s in the +x direction
b. -1.76 m/s that is 1.76 m/s in the -x direction
Explanation:
(a) Calculate the magnitude of the velocity of the puck after a force of 37.0 N directed to the right has been applied for 0.050 s.
Since Impulse, I = Ft = m(v₂ - v₁) where F = force applied = + 37.0 N(positive since it is applied to the right), t = duration of applied force = 0.050 s, m = mass of hockey puck = 0.160 kg, v₁ = initial velocity of hockey puck = + 2,40 m/s (positive since it is moving to the right) and v₂ = final velocity of hockey puck
So, making v₂ subject of the formula, we have
v₂ = v₁ + Ft/m
substituting the values of the variables into the equation, we have
v₂ = v₁ + Ft/m
v₂ = 2.40 m/s + 37.0 N × 0.050 s/0.160 kg
v₂ = 2.40 m/s + 1.85 Ns/0.160 kg
v₂ = 2.40 m/s + 11.56 m/s
v₂ = 13.96 m/s
(b) If instead, a force of 13.3 N directed to the left is applied from t = 0 to t =0.050 s, what is the final velocity of the puck?
Since Impulse, I = Ft = m(v₂ - v₁) where F = force applied = - 13.3 N(positive since it is applied to the right), t = duration of applied force = 0.050 s, m = mass of hockey puck = 0.160 kg, v₁ = initial velocity of hockey puck = + 2,40 m/s (positive since it is moving to the right) and v₂ = final velocity of hockey puck
So, making v₂ subject of the formula, we have
v₂ = v₁ + Ft/m
substituting the values of the variables into the equation, we have
v₂ = v₁ + Ft/m
v₂ = 2.40 m/s + (-13.3 N) × 0.050 s/0.160 kg
v₂ = 2.40 m/s - 0.665 Ns/0.160 kg
v₂ = 2.40 m/s - 4.156 m/s
v₂ = -1.756 m/s
v₂ ≅ -1.76 m/s
(a). The velocity of the puck is 13.96 m/s in the +x direction
(b). The final velocity of the puck is -1.76 m/s which is 1.76 m/s in the -x direction
What is velocity?The velocity of the object is defined as the movement of the object in a particular direction with respect to time.
(a) Calculate the magnitude of the velocity of the puck after a force of 37.0 N directed to the right has been applied for 0.050 s.
It is given that
Impulse, I = Ft = m(v₂ - v₁)
where F = force applied = + 37.0 N(positive since it is applied to the right),
t = duration of applied force = 0.050 s,
m = mass of hockey puck = 0.160 kg,
v₁ = initial velocity of hockey puck = + 2,40 m/s (positive since it is moving to the right)
v₂ = final velocity of a hockey puck
So, making v₂ subject of the formula, we have
[tex]V_2=v_1+\dfrac{Ft}{m}[/tex]
substituting the values of the variables into the equation, we have
[tex]v_2=2.40+\dfrac{37\times 0.050}{0.160}[/tex]
[tex]v_2=2.40+11.56[/tex]
[tex]v_2=13.96\ \dfrac{m}{s}[/tex]
(b) If instead, a force of 13.3 N directed to the left is applied from t = 0 to t =0.050 s, what is the final velocity of the puck?
Since Impulse, I = Ft = m(v₂ - v₁)
where F = force applied = - 13.3 N(positive since it is applied to the right),
t = duration of applied force = 0.050 s,
m = mass of hockey puck = 0.160 kg,
v₁ = initial velocity of hockey puck = + 2,40 m/s (positive since it is moving to the right)
v₂ = final velocity of a hockey puck
So, making v₂ subject of the formula, we have
[tex]v_2=v_1+\dfrac{Ft}{m}[/tex]
substituting the values of the variables into the equation, we have
[tex]v_2=2.40+\dfrac{-13.3\times 0.050}{0.160}[/tex]
[tex]v_2=2.40-4.156[/tex]
[tex]v+2=-1.76\ \frac{m}{s}[/tex]
Thus
(a). The velocity of the puck is 13.96 m/s in the +x direction
(b). The final velocity of the puck is -1.76 m/s which is 1.76 m/s in the -x direction
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whats this spell? cause i have no clue
This is trying to show you that if you know the rules of the code, you can figure out the whole message from only having a part of it.
In this picture, the rules of the code are how the letters are formed.
This is an important concept for communication. It's related to the questions of
. . . Can you understand a person on the phone if there's also static or noise mixed with his voice ?
. . . Can you accurately decode a digital message made of 1's and zeroes, even if some of them are missing, or got reversed on the way to you ?
The answer to both of these questions is 'Yes, you can. If you have ENOUGH of the message, you can fill in the missing parts.'.
In this case, I hate to say it, but I don't think the question gives us enough of the message for us to be able to fill in the missing part. Maybe some people can look at this and understand what it says, but I can't.
To show you a better example of how you can fill in the whole message when part of it is missing, I made my own, and it's attached to this answer.
Look at the graph and extrapolate how many baskets were made by the team at 8.5 minutes.
A.
3
B.
1
C.
23
D.
24
A _____ is used to make magnifying glasses.
convex mirror
concave lens
plane mirror
convex lens
concave mirror