find the fluid force on the vertical side of the tank, where the dimensions are given in feet. assume that the tank is full of water. (the weight-density of water is 62.4 pounds per cubic foot.) lb
Answers
The fluid force on the vertical side of the tank is 5324.8lbs.
F = W ∫ h (y) L (y) dy
F = 62.4 ∫ (8-y)(y + 8/4)dy
F = 15.6 (64.8 - \(8^{3} /3\) - 0)
Force = 5324.8lbs
It is clear what is meant by the word "force." The terms "push" and "pull" are perfectly acceptable at this level to describe forces. An object does not have a force inside of it or within it. Another object. applies a force t0 the first. Both living things and non-living things can be considered to be parts of a force. The net forc.e exerted on an object is equal to t.he rate at which its momentum varies over time, according to the original formulation of Newton's second law. According to this law, if an object's mass is constant, its acceleration is directly proportional to the net force acting on it, moves in the direction of the net force, and increases as the net force increases.
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Related Questions
When the comet passes close to the sun, it has a visible tail. Typically, the comet is only visible for a matter of days while it may be invisible for years. Why does the comet spend so little time close to the sun?
Answers
Answer:
The comet is locked in the Sun's gravity. as it falls deeper in the gravity we'll, its velocity increases. As is travels closer to the Sun, it is trying to break away, but cannot. This transforms into a sideways movement that produces a tight turn. It races further out of the gravity well, and sheds velocity.
A small dog walks 12 meters east and then 5 meters north. How many meters is the dog from her starting position?
Answers
Answer:
17 meters
Explanation:
because 12 meters +5 meters =17 meters
Which answer choice
describes all nonmetals?
A. Hydrogen and all of the elements in blue boxes
B. All of the elements of Period 2 in green boxes
O C. All of the elements of Group 18 in orange boxes
D. Hydrogen and all of the other elements in orange boxes
Answers
Hydrogen and all of the other elements in orange boxes are non metals and is denoted as option D.
What is a Non metal?These are elements which lack metallic properties and usually have low thermal and electrical conductivity.
In the periodic table, they are represented by orange together with hydrogen hence the reason why it is the most appropriate choice.
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The closest meaning to the word hypothesis is
Answers
Answer:
A hypothesis is an idea or explanation that you then test through study and experimentation.
Answer:an educated guess
If a constant force of 917 N is exerted on a scooter for 6 s, then what is the
impulse?
Answers
Impulse on a scooter of 5502 kg m/s.
What formulas for impulse might there be?The change in momentum of the object is equal to the impulse it experiences. F • t = m • v is an equation. When two objects collide, they both experience an impulse, which both causes and is equal to the change in momentum.
What does impulse have in it?The impulse of force is defined as the product of average force and time of application. by means of Newton's second law. If the mass is constant, the impulse of force may be calculated and found to be equal to the change in momentum of an object.
Δ p = F net Δ t
The equation given by F net , F net t is known as the impulse.
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Which word is described by this statement? This is the top of the volcano where sulfur-filled gasses and lava come out.
Answers
Answer:
I believe it is crater.
A student conducts an experiement in their class. They determine that when you increase a mass by four times it's original amount, the acceleration is experiences also drops to 1/4th of it's original value. What value was the student holding constant during this experiment? a Force b Mass c Acceleration d Weight
Answers
Answer:
Correct answer is A Force
Explanation:
The experiment that the students are carrying out is to verify Noten's second law, which has the equation
F = m a
where F is the force, the acceleration and m the mass of the body.
In this case, they indicate that slats were increased 4 times and the acceleration decreased 4 times, therefore when replacing
F = (4m) (a/4)
from here we can see that the force remains constant.
Correct answer is A
Water at the Antarctica usually exits as ice, making it very difficult to use the water or conduct experiment requiring the water to be in liquid state. A coffee addicted physicist stationed at a research base requires about 0.8 kg of ice for his coffee on the hour. a. How much heat is required to convert 0.8 kg of ice at -35 "C into steam at 100 C7 b. Plot the temperature - energy graph for the processes in (a). 5] [5] c. The surface tension of water was determined in a laboratory by using the drop weight method. 100 drops were released from a burette the inner diameter of whose opening is 1.8 mm. The mass of the droplets was 3.78 g. 1. Determine the surface tension of the water and comparing it with the tabulated value, i. Calculate the relative error of the measurements: [6] [4]
Answers
Answer:
water or conduct experiment requiring the water to be in liquid state. A coffee
addicted physicist stationed at a research base requires about 0.8 kg of ice for
his coffee on the hour.
a. How much heat is required to convert 0.8 kg of ice at -35 °C into steam
at 100°C?
[5]
b. Plot the temperature - energy graph for the processes in (a). [5]
C. The surface tension of water was determined in a laboratory by using
the drop weight method. 100 drops were released from a burette the
inner diameter of whose opening is 1.8 mm. The mass of the droplets
was 3.78 g.
i. Determine the surface tension of the water and, comparing it
with the tabulated value,
161
ii. Calculate the relative error of the measurements.
A student was asked to explain how a prism separates white light into its separate colors. The student explanation is below but contains a few mistakes that have been underlined. Re-write the student explanation and correct any errors that you find.
When a beam of white light enters a glass prism, the light waves increase in speed which causes them to bend and reflect inside the glass. White light is actually made up of a combination of different frequencies of light that bend at the same angle. When the light leaves the prism, it bends again, and it is separated into each different color and frequency forming a spectrum that looks like a rainbow.
Answers
Answer:
pp i hate khan academy pls help me
A transformer works by passing a current in a primary coil that produces a magnetic field that grows and collapses. This pulsing magnetic field induces a current in a secondary wire coil. The transformation of the voltage comes from the difference in the
Answers
A transformer is an electrical device that transfers electrical energy from one circuit to another through the principle of electromagnetic induction.
The transformer works by passing a current in a primary coil that produces a magnetic field that grows and collapses. This pulsing magnetic field induces a current in a secondary wire coil.The transformation of voltage comes from the difference in the number of turns between the primary and secondary coils. The voltage is stepped up if there are more turns in the secondary coil, and stepped down if there are fewer turns. Thus, transformers can be used to increase or decrease the voltage in electrical circuits.
Transformers are widely used in the power distribution system to change the voltage level of electrical energy as needed. Electrical power is transmitted at high voltage to reduce power losses during transmission. However, high voltage is not suitable for household or commercial use. Therefore, transformers are used to step down the voltage to a suitable level.
The transformer works based on the principle of electromagnetic induction. When an alternating current flows through the primary coil, a magnetic field is produced that changes direction as the current changes direction. This changing magnetic field induces an alternating current in the secondary coil.
The transformation of voltage is based on the number of turns in the primary and secondary coils. If the secondary coil has more turns than the primary coil, the voltage is stepped up. If the secondary coil has fewer turns than the primary coil, the voltage is stepped down.
Transformers are also used in electronic devices such as power supplies, where they are used to convert the voltage from AC to DC. They are also used in audio equipment such as microphones and speakers, where they are used to match the impedance of the microphone or speaker to the amplifier.
Transformers are essential devices in the power distribution system that enable the transmission of electrical energy at high voltage with minimal power losses. The principle of electromagnetic induction is used to transfer electrical energy from one circuit to another. The transformation of voltage is based on the difference in the number of turns in the primary and secondary coils. Transformers are used to step up or step down the voltage as needed in electrical circuits.
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an object of 98 N weight is dropped from 10 m height and it hit ground with a speed of 12 m/s find air friction
Answers
vf²=vi²+2ad
12²=0+2.a.10
a = 7.2 m/s²
W = m.g
m = W/g = 98/9.8 = 10 kg
∑F=m.a
W-fr=m.a
fr(air friction)=W - m.a
fr = 98 - 10 x 7.2
fr = 98 - 72
fr = 26 N
a gas is at 35.0°c and 3.50 l. what is the temperature of the gas if the volume is increased to 7.00 l? 343�C
70.0�C
616�C
17.5�C
1.16�C
Answers
The temperature of the gas if the volume is increased to 7.00 L would be 70.0°C. the final temperature of the gas would be 70.0°C when the volume is increased to 7.00 L.
According to Charles' Law, when the volume of a gas increases, the temperature also increases, provided the pressure and amount of gas remain constant. The formula for Charles' Law is V₁/T₁ = V₂/T₂, where V is the volume and T is the temperature in Kelvin.
To solve for the final temperature, we can use the formula V₁/T₁ = V₂/T₂ and plug in the given values:
3.50 L / 308.15 K = 7.00 L / T₂
Solving for T₂, we get T₂ = 616.3 K or 343.3°C. However, we need to convert the temperature to Celsius since the initial temperature was given in Celsius.
T₂ in °C = 343.3°C - 273.15 = 70.15°C ≈ 70.0°C.
Therefore, the final temperature of the gas would be 70.0°C when the volume is increased to 7.00 L.
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Explain how a book can have energy even if it is not moving.
Answers
A student left a bar of chocolate in the sun on a hot day. As the chocolate melted, which property changed?
A. its mass
B. its shape
C. its weight
D. its composition
Answers
The melted chocolate weighs the same, has an identical mass, and is still composed of chocolate.
Now it’s just melted chocolate instead of a candy bar and has thus changed shapes.
que tienen en común la materia y el sistema?
Answers
Answer:
La materia es la sustancia de la que está hecho todo material. En física, el sistema es una de las propiedades de la materia. Se puede transferir entre objetos y convertir en forma. No se puede crear ni destruir.
espero que te ayude!
PLEASE HELP, NO ONE IS HELPING MEEEE :(
While taking the stairs it takes you 10 seconds to reach the top. The next time you take the same stairs, it takes you 5 seconds to reach the top stair. During which of these trips up the stairs did you use more power to climb?
Answers
Answer:
probably the trip where it took u 5 seconds
Can any kind soul help me please
Answers
Answer:
I) 420000J
ii)
Explanation:
(I) so you can use the formula for quantity of heat then substitute the values given
formula-Q=mc∆9
your instructor challenges you and your friend to pull on the ends of a horizontal rope attached to a pair of scales in a tug-of-war, but in such a way that the scale readings on the scales are different. can this be done? explain.
Answers
Answer:
If the scale readings are different then there will be a net force on the person attached to the scales:
Consider any point on the rope - if the forces in each direction are the same there is no acceleration of the rope
F = Δm * a for any portion of the rope with mass Δm
If any portion of the rope is accelerated, the person attached to the rope must be accelerated
Calculate the energy per photon (in J) associated with a frequency of 1260kHz Submit answer in scientific notation using the foat 0.00×10∧ 0(e.g.0.000123=1.23×10 ∧
−4). Omit units and spaces.
Answers
The energy per photon associated with a frequency of 1260 kHz is 2.10×10^-25 J.
To calculate the energy per photon, we can use the equation: E = hf, where E represents the energy, h is the Planck's constant (6.62607015 × 10^-34 J·s), and f is the frequency of the photon. Given that the frequency is 1260 kHz, we need to convert it to hertz (Hz) by multiplying it by 10^3:
Frequency = 1260 kHz × 10^3 = 1.26 × 10^6 Hz
Now, we can substitute the values into the equation:
E = (6.62607015 × 10^-34 J·s) × (1.26 × 10^6 Hz)
E = 8.33929859 × 10^-28 J
The answer is given in scientific notation as 8.34 × 10^-28 J. However, the question specifically asks for the answer in the format of 0.00×10^0. To achieve this, we can multiply the result by 10^3 and adjust the exponent accordingly:
E = (8.33929859 × 10^-28 J) × (10^3)
E = 8.33929859 × 10^-25 J
Thus, the energy per photon associated with a frequency of 1260 kHz is 2.10×10^-25 J.
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How does radiation transfer thermal energy from the Sun to Earth?
Answers
Answer:
Sample Response: Radiation transfers thermal energy from the Sun to Earth by electromagnetic waves. Electromagnetic waves can transfer energy with or without matter.Explanation:
pls give me brainliest
Thermal energy transfers from the Sun to Earth by the process named radiation.
What is radiation heat transfer?The energy that matter emits as photons or electromagnetic waves is known as radiation heat transfer. Even when a medium is present in between, radiation can still be significant. The transfer of heat between a living thing and its environment serves as one example.
All objects emit photons, which are forms of energy. The smallest distinct amount of electromagnetic radiation is termed a photon (i.e., one quantum of electromagnetic energy is called a photon). Photons have no mass and move randomly in terms of direction, phase, and frequency.
The heat generated by the chemical reactions occurring in the sun radiates outward and into space rather than remaining close to the sun. Even though the earth is millions of kilometers from the sun, the reactions release so much energy that some of it can still reach the planet. The majority of the sun's rays are in the ultraviolet spectrum, and these rays are what typically go from the sun to the earth as heat energy. Thermal radiation is the term used to describe this type of heat transfer.
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Help please and thank you
Answers
Answer:
B.
Explanation:
A. Is a no, because they the person still has a loan to pay and usually banks will not let people take another loan until the last one was paid in full.
B. This is true, if a person misses a month they get charged with warnings, tax, and fees.
C. This is a chose they don't have to spend their savings.
D. It is not the person's responsibility to take another loan unless it's the pay for the last one.
a ball is thrown off a cliff horizontally with a speed of 20 m/s. it takes 7.0 seconds to hit the ground, find the:
Answers
The height of the cliff is 686 meters when a ball is thrown off a cliff horizontally with a speed of 20 m/s.
When a ball is thrown horizontally, its initial vertical velocity is zero. The only force acting on the ball in the vertical direction is gravity, which causes it to accelerate downward. We can use the equation of motion to find the height of the cliff.
The equation for vertical displacement is given by:
s = ut + (1/2)gt²
Where s is the vertical displacement (height), u is the initial vertical velocity, t is the time, and g is the acceleration due to gravity.
In this case, the initial vertical velocity (u) is 0 m/s, as the ball is thrown horizontally. The time (t) is given as 7.0 seconds, and the acceleration due to gravity (g) is approximately 9.8 m/s².
Substituting the values into the equation, we have:
s = 0 + (1/2) * 9.8 * (7.0)²
s ≈ 686 meters
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The complete question is:
A ball is thrown off a cliff horizontally with a speed of 20 m/s. It takes 7.0 seconds to hit the ground. Find the: height of the cliff.
a piano tuner is tuning a piano when he discovers that the G above middle C is vibrating with a higher frequency than his G tuning fork, which vibrates at 392.0 Hz. He plays the piano key and tuning fork at the same time and hears a beat frequency of 2.0 Hz.
a. What is the frequency of the G on Ms. Carlton's piano?
b. If it had been a lower frequency, creating a beat frequency of 4.0 Hz, what would it have been?
Answers
Answer:
Tuning a piano is the process of adjusting the tension of its strings, thereby altering their pitch, or frequency of vibration, by slightly turning the tuning pins to which they're attached, so that each string sounds pleasingly in harmony with every other string.
Hopefully u will satisfy with my answer of ur question..!!Have a nice day ahead dear..!!Two 3.0g bullets are fired with speeds of 40.0 m/s
and 80.0 m/s, respectively. What are their kinetic
energies? Which bullet has more kinetic energy? What is the ratio of their kinetic energies?
Answers
\( = \sf \frac{1}{2} m {v}^{2} \)
Kinetic energy of the 1st bullet \( \sf = \frac{1}{2} \times m1 \times {(v1)}^{2} \\ \sf= \frac{1}{2} \times 0.003 \times {(40)}^{2}J \\ \sf = \frac{1}{2} \times 0.003 \times 1600J \\ \sf = 2.4J\)Kinetic energy of the 2nd bullet \( \sf = \frac{1}{2} \times m2 \times {(v2)}^{2} \\ \sf= \frac{1}{2} \times 0.003 \times {(80)}^{2}J \\ \sf = \frac{1}{2} \times 0.003 \times 6400J \\ \sf = 9.6J\) So, the 2nd bullet which has greater velocity has more kinetic energy.Therefore, the ratio of their kinetic energies\( \sf = \frac{2.4J}{9.6J} \\ \sf= \frac{24}{96} = \frac{1}{4} \\ \sf = 1 : 4\)
Answer:
The kinetic energies of the bullets are 2.4 J and 9.6 J.
The bullet having greater velocity has more kinetic energy.
The ratio of their kinetic energies is 1 : 4.
Hope you could get an idea from here
Doubt clarification - use comment section.
The kinetic energy of the two bullets are 2.4 J and 9.6 J respectively.
The ratio of the kinetic energy of the bullets is 1:4.
What is kinetic energy?The kinetic energy of an object is the energy possessed by the object due to its motion.
The kinetic energy of the two bullets is calculated as follows;
\(K.E_1 = \frac{1}{2} \times 0.003 \times 40^2 = 2.4 \ J\\\\K.E_2 = \frac{1}{2} \times 0.003 \times 80^2 = 9.6 \ J\)
Ratio of the kinetic energy of the bullets is calculated as follows;
\(K.E_1 : K.E_2 = 2.4: 9.6 \ = \ 1: 4\)
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Name the type of component that has a greater resistance as the current through it increases
Answers
Answer:
filament bulb, filament lamp
Explanation:
More length of a wire is a component that has a greater resistance as the current through it increases.
The resistance of a long wire is greater than the resistance of a short wire because electrons collide with more ions present in the wire as they pass through. The moving electrons can collide with the ions present in the metal.
This makes more difficult for the current to flow and causes resistance in the wire so we can conclude that more length of a wire is a component that has greater resistance as more current passes through it.
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i) Show that total energy of the body at points A, B and C during the fall is same. ii) Find the distance from A to B and final velocity of the ball just reach before C. mass =5 kg, total height (h)= 100m
Answers
The total energy of the body at evevry point is remained same due to the law of conservation of energy. Distance from A to B and final velocity of the ball just reach before C is 44.3 m/s.
d (distance) from A to B is = √2gh
In this case given are, g = 9.8 m/s² and h = 100m,
so here d = √(2⋅9.8⋅100) = 44.3m.
Final velocity ,v = √2gh
Here given are , v is the velocity, g is the acceleration due to gravity, and h is the height. In this case,
g = 9.8 m/s² ,h = 100m,
v = √(2⋅9.8⋅100)
= 44.3 m/s (final velocity)
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a ball is thrown horizontally from the top of s vertical tower and strikes the ground at point 50m from the bottom of the tower. Given that the height of the tower is 45m, determine the
a)time taken for the ball to hit the ground
b)the initial horizontal velocity of the ball
c)The vertical height of the ball just before striking the ground(take acceleration due to gravity as 10m/s)
Answers
Answer:
B
Explanation:
8. Calculate the total resistance in a series circuit with a fan (3 ohms) and 3 lights (1 ohms each). 9 ohms O 12 ohms 15 ohms 06 ohms
Answers
Answer:
R_eq = 6 Ω
Explanation:
In a series circuit the current is constant throughout the circuit and the resistance is the sum of all the resistances in it.
R_eq = ∑
in this case we have
R_eq = R₁1 + 3 R₂
where R₁ is the resistance of the fan and R₂ the resistance of each light, we must clarify that we will assume that the resistance of the lights does not change with temperature
let's calculate
R_eq = 3 + 3 1
R_eq = 6 Ω
Answer:
6 ohms
Explanation:
Why did the Founding Fathers want to include a bill of rights in the U.S.
Constitution?
A. To ensure that the government couldn't take away the individual
rights of citizens
B. To provide future generations a way to amend, or change, the
Constitution
C. To allow states to write and approve their own state constitutions
D. To give state governments more power than the federal
government
Answers
Answer:
Its A
Explanation:
Thats because federalists wanted to take away rights. But the fathers wanted to definitely ensure that each person had equal rights and liberty.
Light demonstrates the characteristics of _______________. particles only waves only both photons and particles both waves and particles
Answers
Both the features of waves and particles can be seen in light.only photons and particles only photons and particles, only waves.
Photons are they both waves and particles?Both a wave as well as a particle description of light are possible.The dual character of light has been highlighted in particular by two investigations.When we consider that light is composed of tiny particles, we refer to those particles as "photons."
What are waves and particles both?The following is the image for 'photons & particles combining waves and particles'.While electromagnetic radiation behaves both like a wave and a particle at the same time, it propagates according to linear wave equations and can only be released or absorbed in discrete pieces.
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