Answer:
There aren't any attachments.
Explanation:
Answer:
i don't know
Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.14 g and a charge of magnitude q. The balls are attracted to each other. When in equilibrium, the balls are separated by a distance of 2.05 cm and the threads attached to the balls make an angle of 20 degrees with the vertical.(a) Find the magnitude of the electric force acting on each ball.(b) Find the tension in each of the threads.(c) Find the magnitude of the charge on the balls.
Answer:
a. 4.99 × 10⁻⁴ N b. 1.46 × 10⁻³ N c. 4.83 nC
Explanation:
(a) Find the magnitude of the electric force acting on each ball.
The tension in the string, T is resolved into horizontal and vertical components Tsin20° and Tcos20° respectively, since the string makes an angle of 20° with the vertical.
Let F = electric force and W = mg be the weight of the ball where m = mass of ball = 0.14 g = 0.14 × 10⁻³ kg and g = acceleration due to gravity = 9.8 m/s²
The electric force acts in the opposite direction to the horizontal component of the tension in each string. Since the masses are in equilibrium,
Tsin20° = F (1)
Also, the weight of the ball acts downwards, opposite to the direction of the vertical component of the tension in the string. Since the masses are in equilibrium,
Tcos20° = W = mg
Tcos20° = mg (2)
Dividing (1) by (2), we have
Tsin20°/Tcos20° = F/mg
tan20° = F/mg
F = mgtan20°
So, F = 0.14 × 10⁻³ kg × 9.8 m/s²× tan20°
F = 0.4994 × 10⁻³ N
F = 4.994 × 10⁻⁴ N
F ≅ 4.99 × 10⁻⁴ N
(b) Find the tension in each of the threads.
Since Tsin20° = F
T = F/sin20°
= 4.99 × 10⁻⁴ N/sin20°
= 4.99 × 10⁻⁴ N/0.3420
= 14.59 × 10⁻⁴ N
= 1.459 × 10⁻³ N
≅ 1.46 × 10⁻³ N
(c) Find the magnitude of the charge on the balls.
From Coulomb's law, the electric force between the masses of charge q and separated by a distance r = 2.05 cm = 2.05 × 10⁻² m
F = kq²/r² where k = 9.0 × 10⁹ Nm²/C²
q² = Fr²/k
q = √(Fr²/k)
q = [√(F/k)]r
Thus,
q = [√(F/k)]r
q = [√( 4.99 × 10⁻⁴ N/9.0 × 10⁹ Nm²/C²)]2.05 × 10⁻² m
q = [√(0.5544 × 10⁻¹³ C²/m²)]2.05 × 10⁻² m
q = [√(5.544 × 10⁻¹⁴ C²/m²)]2.05 × 10⁻² m
q = [2.355 × 10⁻⁷ C/m]2.05 × 10⁻² m
q = 4.83 × 10⁻⁹ C
q = 4.83 nC
What is one property of a wave that determines how much it will diffract
when it encounters an obstacle? *
O frequency
O period
O amplitude
O wavelength
A wire is joined to points X and Y in the circuit diagram shown.How does the circuit change when the wire is added?
Answer: C i did it on ED
Explanation:
Answer:C. A short circuit occurs and makes bulbs 3 and 4 turn off but keeps bulbs 1 and 2 lit
Explanation:
edge 2021
summarize Newton's three laws of motion
Answer:
In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
Explanation:
please help!!
please answer if you know any of them!
Answer:
5. 343j
Explanation:
Sunlight is a form of electromagnetic energy.
Please select the best answer from the choices provided
T
F
Answer: True
Explanation: Hope this helps :)
Question 2
What measurements are needed to calculate your BMI?
A. Weight and shoe size
B. Height and weight
C. heart and breathing rate per minute
D. core temperature and height
Answer:
B
Explanation:
The image formed by a plane mirror are always of ....... size.
Answer:
same
step by step explanation:
if the roller coaster is 127 meters tall and has 622,300 J of potential energy how much does it weigh/ what is the mass?
Answer:
500 kg
Explanation:
using the formula Potential energy (p.e)=mgh where g= acceleration due to gravity whose value is 9.8
so,pe =mgh
622300=m*9.8*127
m=500kg
Just have fun
Have you ever listen to this?? its sooo good
Answer:
no i haven't. i will
Explanation:
A 12 N [E] force is applied to a toy train with a mass of 2.7 kg. The toy train is attached by a light string to a wagon with a mass of 1.8 kg which is attached to a second wagon with a mass of 1.0 kg. If the train is pulled on a surface with a coefficient of kinetic friction of 0.05, determine the tension in the string between the first and the second wagon. (6T, 3C) Include free body diagrams for the three masses involved in the acceleration. (3 Comm.)
See the attached diagram for reference and free body diagrams. The acceleration a of each body will be the same since each connecting string is in tension.
By Newton's second law, we have
• net force on the train:
- - horizontal
[tex]\sum F = F - F_{k,T} - T_1 = m_Ta[/tex]
(where F = 12 N)
- - vertical
[tex]\sum F = N_T - m_Tg = 0[/tex]
• net force on wagon 1:
- - horizontal
[tex]\sum F = T_1 - T_2 - F_{k,1} = m_1a[/tex]
- - vertical
[tex]\sum F = N_1 - m_1g = 0[/tex]
• net force on wagon 2:
- - horizontal
[tex]\sum F = T_2 - F_{k,2} = m_2a[/tex]
- - vertical
[tex]\sum F = N_2 - m_2g = 0[/tex]
We want to determine T₂, the tension in the string connecting the two wagons.
For each body, the corresponding normal force has magnitude
N = mg
where m is the respective mass, and the kinetic friction has magnitude
Friction = 0.05 N = 0.05mg
So if µ = 0.05, then the frictional force on each body is
[tex]F_{k,T} = 0.05 (2.7\,\mathrm{ kg}) g = 1.323\,\mathrm N[/tex]
[tex]F_{k,1} = 0.05 (1.8\,\mathrm{ kg}) g = 0.882\,\mathrm N[/tex]
[tex]F_{k,2} = 0.05 (1.0\,\mathrm{ kg}) g = 0.49\,\mathrm N[/tex]
which leaves us with the system of equations,
[1] … 12 N - 1.323 N - T₁ = (2.7 kg) a
[2] … T₁ - T₂ - 0.882 N = (1.8 kg) a
[3] … T₂ - 0.49 N = (1.0 kg) a
Adding [1] and [2] eliminates T₁ :
(12 N - 1.323 N - T₁) + (T₁ - T₂ - 0.882 N) = (2.7 kg) a + (1.8 kg) a
[4] … 9.795 N - T₂ = (4.5 kg) a
Divide through both sides of [3] by 1.0 kg to solve for a :
a = (T₂ - 0.49 N) / (1.0 kg)
Substitute this into [4] and solve for T₂ :
9.795 N - T₂ = (4.5 kg) (T₂ - 0.49 N) / (1.0 kg)
(9.795 N - T₂) (1.0 kg) = (4.5 kg) (T₂ - 0.49 N)
9.795 N - T₂ = 4.5 T₂ - 2.205 N
12 N = 5.5 T₂
T₂ = (12 N) / 5.5 ≈ 2.1818 N ≈ 2.2 N
Under the Big Top elephant, Ella (2500 kg), is attracted to Phant, the 3,000 kg
elephant. They are separated by 8 m. What is the gravitational attraction between
them?
Under the Big Top elephant, Ella (2500 kg), is attracted to Phant, the 3,000 kg elephant. They are separated by 8
When light illuminates a diffraction grating with 5424 lines per centimeter, its second order maximum is at 50°. What is the wavelength of the light in nanometers (nm)?
Answer:
people do not click that guys link its to get your ip check his profile all his answers are like that DONT CLICK IT
Explanation:
two children of masses m1 = m2 = 20 kg , ride on the perimeter of a small merry-go- round . the merry -go-round us a disk of mass M = 30 kg answer
Answer:
c
Explanation:
Calculate the power of a crane required to lift 36kg of iron per hour from a mine 200 m deep,
(Take g = 10m/s2 ).
hope this helps you !
421+0 is greater than or is less than 4210l
Answer:
greater than
Explanation:
thats my answer
Please help with this question
Answer:
for your first question it is the first answer that is there for your second question it is the second answer that is there
Use the term chemical bond in a complete sentence
PLZZ HELP!!!
When a star is undergoing nuclear fusion what type of radiation will be found?
Answer:
I think the correct answer would be the third option. As the elements around the star begins to emit more and more electromagnetic radiation, the rocky materials are pulled in by the electromagnetic radiation. They are being drawn closer to the star and there would be a very high chance of a nuclear
Explanation:
A train and a bicycle have a head-on collision. Compare the force of impact between the train and the bicycle; compare the accelerations of the train and bicycle. (5 points)
Answer:
The train will have a greater impact than the bike
The train will have a bigger net force than the bike, so the acceleration of the train will be slower than the bike. In order to achieve the same acceleration, the train requires a bigger net force.
Select the correct answer from each drop-down menu.
Photosynthesis is a process in which plants prepare food using carbon dioxide, chlorophyll, and water in the presence of sunlight.
During photosynthesis,(blank)
energy is transformed into(blank)
1.Chemical,electrical,kinetic, Solar ?
2.Chemical, Electrical, Kinetic, Solar
Answer:
During photosynthesis solar energy is converted into chemical energy
Explanation:
During photosynthesis solar energy is converted into chemical energy in the form of energy rich bond of ATP molecule.
ATP (Adenosine triphosphate) and ADP (Adenosine diphosphate) molecules are termed currency of energy. ADP molecule is converted into ATP molecules, whenever energy is available in certain exothermic reactions of metabolism.
ATP molecules are store- house of energy. ATP molecule is broken down into ADP molecule in presence of enzyme ATPase, releasing energy whenever energy is required.
The synthesis of ATP molecules, utilizing solar energy during photosynthesis, is termed photo-phosphorylation.
These ATP molecules produced during light reaction of photosynthesis are utilized in dark reaction of photosynthesis (Calvin cycle).
ATP molecules synthesized during photo-phosphorylation may also be used in other metabolic reactions.
Photo-phosphorylation is of 2 types, i.e. Cyclic and Non-cyclic photo-phosphorylation.
Chlorophyll molecules entrap solar energy . There are 2 types of photo-systems in chlorophyll. These are photo-system -I and photo-system-II .
The electrons of chlorophyll molecule of photo-system I get excited which pass through series of electron carriers in electron transport system arranged in the order of decreasing energy level.
During the passage of electrons from carriers of higher energy level to the carriers of lower energy level, the energy is lost which is utilized for converting ADP molecule into ATP molecule.
Photo-system I is concerned with light reaction of photosynthesis only, constituting cyclic photo-phosphorylation.
The electron transport during Photo-system II results in the synthesis of NADPH2 in presence of enzyme NADP reductase. NADPH2 is used in reduction reaction of Calvin cycle.
Both Photo-systems participate in non-cyclic photo-phosphorylation that results in the synthesis of NADPH2 in addition to the synthesis of ATP molecules.
I need help plssss!!!!
Answer:
C
Explanation:
The other answers don’t make sense
what is called the phenomenon of prolongation of sound
Answer:
It is called reverberation.
Explanation:
The phenomenon of prolongation of sound is the process in which sound produced is reflected from plane surfaces in a continuous manner, which leads to reverberation of sound waves. It can also be referred to as a condition of continuous echo production.
It occurs when sound produced get reflected from a hard plane surface, and in the process hits another surface and another reflection occurs. This continuous reflection leads to prolongation of sound.
The sound produced is heard for some specific period of time before it dies down or get absorbed finally.
What is the ideal mechanical advantage of a ramp with a height of 3.5 and a length of 14.0 meters
Answer:
ghj
Explanation:
 A factory worker pushes a box across the rough floor
what forces apply
Answer:
Friction
Explanation:
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
a- convert 360 km/hr into m/sec.
b- find product of 876.5 and 3.36
(i) write full display of calculator
(ii) write answer (i) nearest 2 decimal places
(iii) write as whole number
Answer:
360km/hr=360×1000m
a 1×60×60s
=360 000
3600
=100m/s²
PLEASE GIVE BRAINLIEST
2,945.04
2,945.04 to 2d.p
2945 as a whole number
Compared to the amount of carbon atoms on the earth, the amount of radioactive carbon atoms is infinitesimal in this sentence, what is the best synonym for infinitesimal
Answer:
See the answer below
Explanation:
The literal meaning for infinitesimal is for something to be small.
Other meanings include, but not limited to minute, insignificant, tiny, microscopic, minuscule.
Thus, the statement can be reconstructed by saying:
Compared to the amount of carbon atoms on the earth, the amount of radioactive carbon atoms is small.
True or False: if a sound wave's frequency changes, its speed stays the same
A block of size 100cmX50cm applies a force of 100N on the ground. Calculate the pressure
exerted by the block on the ground.
(2 Points)
Answer:
200 N/m²
Explanation:
Pressure = Force / Area
Force =100N
Area = 100cm x 50 cm= 5000cm² =0.5m²
Hence Pressure = 100N / 0.5m²
Pressure = 200N/m²
1. As you get ready for bed, you roll up one of your socks into a tight ball and toss it into the laundry
basket across the room. Then, you try to toss the other sock without rolling it up.. What effects whether
or not your socks land in the basket?
Answer:
When you toss a rolled up sock across the room, it travels faster as it becomes round and has more weight added on it and this causes the sock to travel in the direction you wish and this gives you a high chance of the sock going straight into the laundry basket, no matter how far away you are.
On the other hand, throwing a sock without rolling it up will cause the sock to just flat down as you throw it. It will travel at a low speed because it has no weight on it since it is flat, and if you try to throw it, it will atleast land 21 cm away from you. About a 0% chance of it getting in the basket.
Hope this helped! =>