The frequency of the second harmonic is 880 Hz (a pitch of A5). The speed of sound through the pipe is 350 m/sec. Find the frequency of the first harmonic and the length of the pipe. The length of an air column is related mathematically to the wavelength of the wave which resonates within it.
Calculate the momentum of a 0.145 kg baseball being thrown at a speed of 40.0 m/s.
Answer:
5.8 kg*m/s
Explanation:
p = mv
momentum = mass times velocity
momentum = 0.145 kg times 40.0 m/s
momentum = 0.145* 40.0
momentum = 5.8 kg*m/s
FIGURE 4.1 shows a rectangular wire loop 0.3 m x 0.2 m moving horizontally to the right at 12 ms -1 in a uniform magnetic field of 0.8 T. The induced current in the wire is 3 A.
(i) Determine the resistance of the wire loop
(ii) Determine the direction of the induced current. Explain how you determine the direction of the induced current.
[tex]\underline{\underline{\large\bf{Solution:-}}}\\[/tex]
(I) Emf developed,E in the loop is given as:
[tex]\begin{gathered}\\\implies\quad \sf E = BLv \\\end{gathered} [/tex]
[tex]\begin{gathered}\\\implies\quad \sf E = 0.8 \times 0.3 \times 12 \\\end{gathered} [/tex]
[tex]\begin{gathered}\\\implies\quad \sf E = 2.88 V \\\end{gathered} [/tex]
[tex]\longrightarrow[/tex]I = E/R
[tex]\quad[/tex]R = E/I
where
R = resistanceE = Induced EMFI = Current[tex]\begin{gathered}\\\implies\quad \sf R = \frac{2.88}{3} \\\end{gathered} [/tex]
[tex]\begin{gathered}\\\implies\quad \boxed{\sf{ R = 0.96 \;ohm}}\\\end{gathered} [/tex]
(ii) The direction of current induced is from P to Q which is given by B × V vector . It may also be explained by Lenz law. Since magnetic field is from S to N . The fingers of the right hand are placed around the wire so that the curling of fingers will show the direction of the magnetic field produced by the wire then the thumb points in the direction of current flow which is from P to Q.
explain 4 factors affecting centripetal acceleration
Answer:
it's speed
mass of the object
and the radius of the circle
HElp meee
explain how to do this also
Answer:
[tex]\huge\boxed{\sf x = 18\°}[/tex]
Explanation:
If ∠ABC and ∠DEF are complementary angles, this means they add up to 90 degrees.
So,
∠ABC + ∠DEF = 90°
72 + x = 90
Subtract 72 to both sides
x = 90 - 72
x = 18°
[tex]\rule[225]{225}{2}[/tex]
please help oooooooo
Answer: Can't see clearly.
Explanation:
In a footrace between two runners, is it possible for the second-place finisher have a greater speed
at the finish line than the winner?
Answer:
no
Explanation:
this may be wrong, but i would assume no because they have to cover the same distance therefore the faster runner would cross the finish line first.
4. What's metamorphism?
A. The process by which new minerals form as a result of precipitation from an aqueous solution
B. The process by which do minerals form as a result of biological processes in living organisms
C. The process by which two minerals form from existing minerals that become unstable at earth’s surface
D. The process by which new minerals form from existing minerals as a result of elevated temperature or pressure
Answer: Your answer is D. The process by which new minerals form from existing minerals as a result of elevated temperature or pressure
Hope this helps!
HELP!!! Think about the soccer ball rolling down the inclined plane from the previous lesson if a student used a 6 kg bowling ball instead of a 05 kg soccer ball the acceleration would_____ and the kinetic energy would____
The speed in Case A is twice that of Case B. The object mass
in Case A is one-half that of Case B. The radius is the same
in each case. How does the net force in Case A compare to
the net force in Case B?
Answer:
one-half that of Case B.
Explanation:
I am sorry if I get it wrong
5. A 100 N force is applied at an angle of 30 degrees to the horizontal to move a 15 kg object at a constant speed for a horizontal distance of 5 m. Calculate the work done. Your answer Back Next Clear form
Answer:
433 J
Explanation:
F = 100 N, θ = 30°, m = 15 kg, d = 5 m
Work done = F * d * cosθ = 100 * 5 * cos(30) = 433 J
greenhouse gases effect is caused primarily by which processes?
a- absorbing outgoing long wave radiation from the earth
b- absorbing incoming short wave solar energy.
c- heating of the earth stratosphere
d- blocking incoming short wave solar energy
I need at least 20 lab safety hazards listed from this picture and I’m so lazy
Answer:
1. messy
2. unorganized
3. dangerous
4. not a safe place
5. chemicals everywhere
6. hazardous
7. no adult in room
8. no guidance
9. children do not know what their doing
10. sharp objects
11.messing around
12. child messing around on high areas
13. can cause dangerous chemical reactions
15.adult may not know the children are in the room
16 the adult may be irresponsible
17.do not have experience
18. unprofessional
19. may get adult in trouble
20. is responsible or may not be.
2. A digital camera records each image as 8 megapixels, with each pixel transferring 14 bits of information. What is the minimum capacity for a memory card which could hold 120 images?
Given what we know, we can confirm that due to its relatively low image quality, any memory card with at least one MB will be sufficient to hold the 120 images taken.
Why is one MB enough?The photos are taken at 8 megapixels, with each one occupying 14 bits of information. A megabit consists of one million bits of potential storage. Therefore, the 120 pictures will occupy roughly 1% of the available storage of a 1 MB memory card.
Therefore, we can confirm that due to its relatively low image quality, any memory card with at least one MB will be sufficient to hold the 120 images taken.
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Who will create a greater pressure, a heavy person standing on a bed or a lighter person lying on the bed? Explain your answer.
Answer:
a heavy person standing on a bed
Explanation:
The heavy person will have more mass than the lighter person, so they will create greater pressure.
A 4-kg box is pushed against a flat 1 point
surface with a force of 100 N for 5
meters. The work done on the box is
Answer:
wd = F * D
wd = 100 * 5
wd = 500
The work done on the box is 500 Joules.
What is work?
When an object is moved over a distance by an external force, at least a portion of which is applied in the direction of the displacement, it is said to have done "work" in physics. By multiplying the length of the path by the component of the force acting along the path, work can be calculated if the force is constant.
As work is a scalar quantity, it can be defined only by magnitude, it has no direction. SI unit of work is Joule and CGS unit of work is erg.
Given parameters:
Mass of the box: m = 4 kg.
Force applied on the box: F = 100 N.
Displacement of the box: d = 5 meters.
Hence, the work done on the box is = applied force × displacement
= 100 N × 5 meters
= 500 Joules.
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If the mass of a car is 1,100 kg and its momentum is 22,000 kg
m/s, then what is its velocity?
The velocity of the car will be [tex]V=18.18\ \frac{m}{s}[/tex]
What will be the velocity of the car?As velocity is the movement of the car with respect to time.
It is given that
Mass m = 1100kg
Momentum= 22000 [tex]\frac{kgm}{s}[/tex]
The momentum is given as
[tex]P=mv[/tex]
[tex]v=\dfrac{p}{m}[/tex]
[tex]v=\dfrac{22000}{1100} =18.18 \ \dfrac{m}{s}[/tex]
Thus the velocity of the car will be [tex]V=18.18\ \frac{m}{s}[/tex]
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ACTIVITY 1: IDENTIFY IT RIGHT AWAY! Directions: Identify what is being described in each item.
1. The first name of the sport badminton.
2. A high-drag projectile, with an open conical shape.
3. Racquet sport played using racquets to hit a shuttlecock across a net.
4.The year when the first rules for badminton were established.
5. A rectangular in shape and divided into halves by a net.
The Identification of what is being described in the text above is written below:
The first name of the sport badminton was Poona. A high-drag projectile, with an open conical shape is called shuttlecock.Racquet sport played using racquets to hit a shuttlecock across a net is called badminton.The year when the first rules for badminton was established is 1877.A rectangular in shape and divided into halves by a net. is called the court.What was Poona about?This was known to be the first and original name that was given to badminton. This word was said to have originated from a city that has the same name in India where badminton was said to be a popular sport that was played by the British military officers.
Conclusively, badminton is a very popular sport today and the name and rules used in Poona were first made public in 1873.
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A car accelerates uniformly from rest tona speed of 30.0 mi/h in 12.0s. Find the distance the car travels during this time? Find the constant acceleration of the car?
Answer:
2.5 mi/s^2
Explanation:
please see paper for work!
Competition in the Los Angeles Flower District results in
higher floral prices
better quality flowers
poor customer service
Competition in the Los Angeles Flower District results in better quality flowers.
Why quality is the standard in flower competition?Competition results in better quality flowers because in the competition, best quality of flowers will be selected as a winner so the competitors produces best quality of flowers in order to claim the prize so we can conclude that Competition in the Los Angeles Flower District results in better quality flowers
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which statment is correct about the mass of carbon dioxide used during photosynthesis
Answer:
the amount of carbon dioxide used is equal to the amount of oxygen formed.
Explanation:
I hope that helped you didn't put any statements so I couldn't really tell witch one was right-
Determine the mass of a sphere with a radius of 8 cm having a density of 7500 kg / m3
Answer:
Explanation:
V=2140CM3
M=VOLUME*DENSITY
7500kg/m3=7.5g/cm3
2140cm3*7.5g/cm3=16050
16050g
What is the highest-frequency sound to which this machine can be adjusted without exceeding the prescribed limit
The highest frequency sound to which the machine can be adjusted is :
4179.33 HzGiven data :
Pressure = 10 Pa
Speed of sound = 344 m/s
Displacement altitude = 10⁻⁶ m
Determine the highest frequency sound ( f )applying the formula below
Pmax = [tex]B(\frac{2\pi f}{v}) A[/tex] --- ( 1 )
Therefore :
f = ( Pmax * V ) / [tex]2\pi \beta A[/tex]
= ( 10 * 344 ) / 2[tex]\pi[/tex] * 1.31 * 10⁵ * 10⁻⁶
= 4179.33 Hz
Hence we can conclude that The highest frequency sound to which the machine can be adjusted is : 4179.33 Hz .
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Attached below is the missing part of the question
A loud factory machine produces sound having a displacement amplitude in air of 1.00 μm, but the frequency of this sound can be adjusted. In order to prevent ear damage to the workers, the maximum pressure amplitude of the sound waves is limited to 10.0 Pa. Under the conditions of this factory, the bulk modulus of air is 1.31×105 Pa. The speed of sound in air is 344 m/s. What is the highest-frequency sound to which this machine can be adjusted without exceeding the prescribed limit?
I drove from Oklahoma to California (1452.9 miles) in 23 hours? What was my average speed?
Answer:
63 miles per hour
Explanation:
you just divide miles and hours to get your average speed
Find the weight of a 2 g (=0.002 kg) computer chip. The acceleration due to gravity at the surface of Earth is 9.8 m/s^2.
Answer: 0.0196 Newtons (0.0196N)
Explanation:
Weight is the test mass multiplied by the gravitational field created from the source mass. The source mass is the Earth, and the test mass is the computer chip:
[tex]W=mg[/tex]
[tex]W=(0.002kg)(9.8m/s^2)[/tex]
[tex]W=0.0196N[/tex]
______ resources will eventually run out, while ________ resources can be generated anew.
A. Limited, abundant
B. Finite, regenerative
C. Nonrenewable, renewable
D. Usable, sustainable
Answer:
C. Nonrenewable, renewable
Hope this helps!
A ball falls from rest from a height of 7.5 m above the ground level. How much time does the ball take to reach the ground?. Consider g = 9.81 m/s².
2.47 s
0.62 s
1.24 s
0.87 s
____________ of matter = particles (tiny building blocks that make up matter) cannot be created or destroyed Question 2 options: Limited Conservation Closed Explosion
Answer:
Limited Conservation
Explanation:
Atoms
matter is never created or destroyed, it cycles through our world. Atoms that were in a dinosaur millions of years ago—and in a star billions of years before that—may be inside you today. The tiny particles called atoms are the basic building blocks of all matter
nationalgeographic
A spring has a natural length of 28.0 cm. If a 23.0-N force is required to keep it stretched to a length of 36.0 cm, how much work W is required to stretch it from 28.0 cm to 32.0 cm
Answer:
0.23 J
Explanation:
k*(36 - 28) = 23
so k = 23/8 N/cm
W = k(32 - 28)²/2 = 23/8 * 4²/2 = 23 N-cm = 0.23 J
A typical wall outlet in the United States provides a voltage of 120 V to your appliances. What current would be necessary for the electricity to pass through a 8-ohm resistor ? Amps
Answer:15 Amps
Explanation:
CK12 said it was right
An unbalanced force of 2 newtons applied to a given mass produces an acceleration. of an unbalanced force of 1 newton is applied to the same mass, the acceleration produced will be
the same
twice as much
one-half as much
four times as much
Explain your answer to the previous question, using full sentences.
i desperately need help!!!
Answer:
Twice as much
Explanation:
D 5-7 Be the only person I know of is the Book with all men and men and people experience the first of the wisdom and
The acceleration produced will be one-half as much.
What is acceleration?Acceleration is rate of change of velocity with time. Due to having both direction and magnitude, it is a vector quantity. SI unit of acceleration is meter/second² (m/s²).
From Newton's 2nd law of motion; it can be written that:
Force = mass × acceleration
acceleration = force/mass.
Now, according to the question, an unbalanced force of 2 newtons applied to a given mass produces an acceleration.
So, when an unbalanced force of 1 newton is applied to the same mass, the force applied on the object becomes half.
Hence, from the equation, the acceleration produced will be one-half as much.
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