lower the force or add an opposing Force
A tuning fork is stuck against a table. It vibrates at a frequency
of 300 Hz. At what frequency will you hear the sound of the
tuning fork? Hz
Answer:
300 Hz.
Explanation:
The frequency of a sound wave is the same as that of the source. For example, a tuning fork vibrating at a given frequency would produce sound waves that oscillate at the same frequency.
The frequency that you will hear when the tuning fork is stuck against a table is 300 Hz.
What is a frequency?Frequency is a measurement of how often a repetitive event occurs in a given amount of time. It is commonly used to describe the rate at which waves oscillate or vibrate. The unit of frequency is hertz (Hz), which represents the number of cycles or oscillations per second.
For example, in the case of sound waves, frequency is related to the pitch of the sound. Higher frequency sound waves have a higher pitch, while lower frequency sound waves have a lower pitch. Similarly, in the case of electromagnetic waves such as light, frequency is related to the color of the light. Higher frequency electromagnetic waves correspond to colors such as blue and violet, while lower frequency electromagnetic waves correspond to colors such as red and orange.
The relationship between frequency, wavelength, and the speed of the wave is given by the formula:
frequency = speed of the wave / wavelength
This formula shows that the frequency of a wave is inversely proportional to its wavelength, assuming the speed of the wave remains constant. In other words, as the wavelength of a wave increases, its frequency decreases, and vice versa.
Frequency is an important concept in many fields, including physics, engineering, and communications. It is used to describe and analyze a wide range of phenomena, from the behavior of sound and light waves to the performance of electronic circuits and systems.
Here in the Question,
When a tuning fork is struck against a table, it vibrates at its natural frequency, which is determined by its physical properties such as its mass, shape, and material. The vibration of the tuning fork creates sound waves that travel through the air, and our ears perceive these waves as sound.
The frequency of the sound that we hear depends on the frequency of the sound waves that reach our ears. When the sound waves from the tuning fork travel through the air, they undergo a phenomenon called the Doppler effect, which causes the frequency of the sound waves to change depending on the relative motion between the source of the sound waves (the tuning fork) and the observer (our ears).
If the tuning fork is stuck against a table and is not moving relative to the observer, the frequency of the sound waves that reach our ears will be the same as the natural frequency of the tuning fork, which is given as 300 Hz in this case.
Therefore, the frequency that you will hear when the tuning fork is stuck against a table is 300 Hz.
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How many calories would you take in if you ate the whole box of crackers in one sitting ?
Answer:
i'm pretty sure it's 81 calories
List the 3 formulas for Speed, Distance, and Time
11. Improvement on communication skill is a
A. Social Benefits
B. Emotional Benefits
C. Mental Benefits
D. Physical Benefits
12. Reducing anxiety, depression, and negative mood.
A. Social Benefits
B. Emotional Benefits
C. Mental Benefits
D. Physical Benefits
13. Have stronger bones, muscles and joint and lower risk of developing osteoporosis.
A. Social Benefits
B. Emotional Benefits
C. Mental Benefits
D. Physical Benefits
Answer:
11.A
12.C
13.D
Explanation:
12.might be emotional benefits but they are often associated with our mental health , which is why I gave the answer C . its up to u now
Point P is located 1.7 m from fixed point charge q. The electric field Ē at point P is 8.6 x
10-2 N/C, directed away from the point charge. What is the magnitude of q? Let the
electrostatic constant k = 8.99 x 10°N • m²/C2.
O
A. 2.8 10-11 C
0
B. 4.8 * 10-11 C
O.C. -4.8 x 10-11 C
D. 1.5 x 10-10
Answer:
2.8 × 10^-11 C
Explanation:
The computation of the magnitude of q is shown below;
The electric field at point P because of point charge Q is provided by,
E = 8.6 × 10^-2 N/C
And, the separation between charge Q and P is r = 1.7m
Now According to the Coulomb's law,
E = kQ ÷ r²
8.6 × 10^-2 = 9 × 10^9 × Q ÷ (1.7)²
8.6 × 10^-2 × 2.89 ÷ 9 × 10^9 = Q
Q = (8.6 × 2.89 ÷ 9) × 10^-11
Q = 2.76 × 10^-11 C
= 2.8 × 10^-11 C
Which of the following is equal to impulse?
A. Ft
B. m/s
C. pt
D. mv
How many atoms are in 3MgCl2?
Answer:
3MgCl2 has 9 atoms.
Explanation:
The Element Magnesium (Mg) has 3 atoms.
The Element Chloride (Cl) has 6 attoms.
Their fore 6 + 3 is 9 of course. 3MgCl2 has 9 atoms.
BTW: 3MgCl2 is a molecular compound as well as H2O and CO2.
Mr. Bennet's class completed an investigation on magnetism. They found that most metals were attracted to magnets and plastics were not. What will happen if Mr.
Bennet's class repeats the investigation?
A most metails would be attracted to magnets and plastics would not.
B plastics would be attracted to magnets and metals would not.
C both metals and plastics would be attracted to magnets.
D neither metals nor plastics would be attracted to magnets.
Answer:
A
Explanation:
when the earth is closest to the hot sun it is not summer why ? why when the sun is farther. A earths orbit changes shape every year. B eaths seasons are caused by the moon rather than the sun. C scientist do not know for sure why we have seasons. D eaths distance from the sun does not effect the seasons.
Answer:
It's letter D. It doesn't matter because our temperature changes because of the Earth tilts on its axis
plzzzzz help me promise will mark you brainiest
Answer:
c. 300 J
Explanation:
Given
Power (p) = 10 W
Time (t) = 0.5 minutes = 30 seconds
Energy (E) = ?
We know
p = E/t
10 = E / 30
E = 300 Joule
Which is most impacted when transforming solar energy into electricity?
land use
air quality
water quality
weather conditions
Answer:
weather conditions
Explanation:
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Why do you ask me that’s all me the moon seem like they’re walking on Spring tomorrow on earth we are from your tractor to the ground???
A)This part controls the amount of light entering the eyes. A= Iris B= Pupil Give reason for your answer.
Answer:
Iris
Explanation:
Iris can be described as a part of the eyes which regulates the amount of light that enters the eye. The iris is made up of various muscles that control the size of the pupil
When a person is in a well-lighted room, the iris decreases the size of the pupil so that a low amount or medium amount of light is absorbed into the pupil. Also when an individual steps into a dark room the iris increases the size of the pupil so that a high amount of light penetrates the pupil.
Hence without the iris the amount of light that enters the eye cannot be controlled.
explain about the laws of reflection
Answer:
The law of reflection states that the angle of reflection equals the angle of incidence—θr = θi. The angles are measured relative to the perpendicular to the surface at the point where the ray strikes the surface.
Explanation:
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Pushing a shopping cart is what type of friction
Parked car is what type of friction
Why are very high temperatures and pressures required for fusion to occur?
to generate the neutrons that are needed to break the nuclei
to overcome the repulsion between the protons in the nuclei that join
to maintain the proper conditions to keep the chain reaction going
to keep the uranium fuel separate from the control rods
Answer:
so as to over come the repulsion between the protons in nuclei that join
Explanation:
it requires high temperature so that the nucleus starts moving at rapid speed which in turn increases their kinetic
In nuclear reactions, very high temperatures and pressures required for fusion to occur so as to to overcome the repulsion between the protons in the nuclei that join.
What are nuclear reactions?There are two types of nuclear reactions which are nuclear fusion and nuclear fission .They involve the combination and disintegration of the element's nucleus respectively.
In nuclear fission, the nucleus of the atom is bombarded with electrons of low energy which splits the nucleus in to two parts .Large amount of energy is released in the process.It is used in nuclear power reactors as it produces large amount of energy.
In nuclear fusion,on the other hand, is a reaction which occurs when two or more atoms combine to form a heavy nucleus.Large amount of energy is released in the process which is greater than that of the energy which is released in nuclear fission process.
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Which do you think requires more Work, lifting a 100 N load a vertical distance of 2 m or lifting a 10 N load a vertical distance of 4 m?
Answer:
Lifting 100 N 2 meters is much more work.
Explanation:
Remark
The formula is F * d = W
Givens
F = 100 N
D = 2 m
or
F = 10 N
D = 4 m
Solution
Work = 100 * 2
Work = 200 Joules
Work = 10 * 4
Work = 40 J
what is the couple force
Explanation:
a couple is a system of forces with a resultant moment but no resultant force. A better term is force couple or pure moment. Its effect is to create rotation without translation, or more generally without any acceleration of the centre of mass.
5. Aunt Jane weighs 145 pounds. What is her weight in Newtons?
Answer:
i think its 644
Explanation:
If an element forms a 2+ ion, in which group of the periodic table would you expect to find it? A. 2 B. 1 O c. 17 D. 18
Answer:
A
Explanation:
It would be with the group 2 metals.
Where is the magnet that causes Earth’s magnetic field? What is this magnet made of?
HELPPPP PLEASEE!
Answer:
The magnetic field of Earth is created by currents of electricity that flow in the molten center.
Explanation:
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Nolan is making a capacitor using plates that have an area of 3.2 × 10–4 m2 separated by a distance of 0.20 mm. He has the two dielectrics listed in the table.
table:
dielectirc 1= dielectric constant 6.8
dielectric 2= dielectric constant 1.5
At a voltage of 1.5 V, how much more charge can Nolan store in the capacitor using dielectric 1 than he could store using dielectric 2?
answer choices:
7.5 × 10^–11 C
9.6 × 10^–11 C
1.1 × 10^–10 C
1.4 × 10^–10 C
Answer: 1.1 x 10^-10 C
Explanation:
Answer:
1.1 x 10^-10 C
Explanation:
on edg 21
An electric motor is used to lift a load. When 7000 J of electrical energy are supplied to the motor the load gains 3100 J of gravitational potential energy. The amount of wasted energy by the motor is
Answer:
W = 3900 J
Explanation:
Given that,
Electrical energy supplied = 7000 J
Gain in gravitational potential energy = 3100 J
We need to find the amount of wasted energy. Let it is W. So,
W = 7000 J - 3100 J
= 3900 J
So, the amount of wasted energy by the motor is 3900 J.
help me please its due in ten minutes
Answer:
relative age
Explanation:
i remember this test
If a cliff jumper leaps off the edge of a 100m cliff, how long does she fall before hitting the water? (assume zero air resistance)
Hello,
QUESTION)Assuming that the initial velocity of the jumper is zero, on Earth any freely falling object has an acceleration of 9.8 m/s².
✔ We have : a = v/Δt = ⇔ Δt = v/a
Δt = (√2xgxh)/9,8 Δt = (14√10)/9,8Δt ≈ 4,5 sIf a cliff jumper leaps off the edge of a 100 m cliff , then she would have fallen 4.51 seconds before hitting the water.
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 If a cliff jumper leaps off the edge of a 100 m cliff, then we have to find out how long she falls before hitting the water.
By using the second equation of the motion,
S = ut + 1/2 × a × t²
100 = 0 + 0.5 × 9.8 × t²
t² = 100 / 4.9
t = 4.51 seconds
Thus, If a cliff jumper leaps off the edge of a 100 m cliff, then she would have fallen 4.51 seconds before hitting the water.
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please help me .........................
Answer:
Dog2 has most kinetic energy .
B:324j
Newtons 2nd law school home and outdoors examples
A 100 N force is applied to a pulley to lift a 500 N object. What is the actual mechanical advantage of the pulley?
Please help, I'm tired of trolls.
The lower the efficiency of a ____, the ______ the percentage of energy that is degraded tp _____ energy.
Answer:
Machine; greater; thermal.
Explanation:
Conduction can be defined as the transfer of electric charge or thermal energy as a result of the movement of particles. When the conduction relates to electric charge, it is known as electrical conduction while when it relates to thermal energy, it is known as heat conduction.
In the process of heat conduction, thermal energy is usually transferred from fast moving particles to slow moving particles during the collision of these particles. Also, thermal energy is typically transferred between objects that has different degrees of temperature and materials (particles) that are directly in contact with each other but differ in their ability to accept or give up electrons.
Mathematically, the efficiency of a machine is given by the formula;
[tex] Efficiency = \frac {Mechanical \; advantage}{Velocity \; ratio} * 100 [/tex]
Hence, the lower the efficiency of a machine, the greater the percentage of energy that is degraded to thermal energy. We experience inefficiency in machines due to the fact that energy are being transformed or converted from one form to another.
If a car has a velocity of 85 km/hr, how long will it take to accelerate to 45 km/hr if the acceleration is -3 km/hr/sec?
Answer:
Time, t = 13.34 seconds.
Explanation:
Given the following data;
Initial velocity, u = 85km/hr to meters per seconds = 85*1000/3600 = 23.61 m/s
Final velocity, v = 45km/hr to meters per seconds = 45*1000/3600 = 12.5 m/s
Acceleration, a = -3 km/hr/sec to meters per seconds square = -3*1000/3600 = -0.833m/s²
To find the time;
Acceleration = (v - u)/t
-0.833 = (12.5 - 23.61)/t
-0.833t = -11.11
t = 11.11/0.833
Time, t = 13.34 seconds.