Answer:
[tex]2.03\times 10^5\ Pa[/tex]
Explanation:
We need to find the extra pressure when you are 10 meters under water. The net pressure on us is given by :
[tex]P=P_o+\rho gh\\\\P=1.05\times 10^5+1000\times 9.8\times 10\\\\P=2.03\times 10^5\ Pa[/tex]
So, [tex]2.03\times 10^5\ Pa[/tex] is exerted on us at 10 m under water.
MC Qu. 82 A design engineer wants to construct a sample... A design engineer wants to construct a sample mean chart for controlling the service life of a halogen headlamp his company produces. He knows from numerous previous samples that this service life is normally distributed with a mean of 500 hours and a standard deviation of 20 hours. On three recent production batches, he tested service life on random samples of four headlamps, with these results: Sample Service Life (hours) 1 495 500 505 500 2 525 515 505 515 3 470 480 460 470If he uses upper and lower control limits of 520 and 480 hours, what is his risk (alpha) of concluding servicelife is out of control when it is actually under control (Type I error)? A. 0.0026B. 0.0456C. 0.3174D. 0.6826E. 0.9544
Answer:
B) 0.0456
Explanation:
It is given that :
Rationale :
UCL = 480
LCL = 480
∴ Mean , [tex]$\bar X = 500$[/tex]
The standard deviation of sample (Sn) = 11.55
Z (for UCL) [tex]$=\frac{\text{UCL - Mean}}{\text{Sn}}$[/tex]
[tex]$=\frac{520-500}{10}$[/tex]
= 2
Similarly,
Z (for LCL) [tex]$=\frac{\text{LCL - Mean}}{\text{Sn}}$[/tex]
[tex]$=\frac{480-500}{10}$[/tex]
= -2
Now using the z table for finding the confidence level between Z value of -2 and 2.
Confidence level = 0.4772 + 0.4772
= 0.9544
Risk (alpha) = 1 - confidence level
= 1 - 0.9544
= 0.0456
A ball with an initial velocity of 12 m/s is rolling up a hill. The ball accelerates at a rate of -2.6 m/s/s.
Answer:
4.61 seconds
Explanation:
Given data
Initial velocity= 12m/s
acceleration= -2.6m/s^2
From the given data
we can find the time t
we know that
Acceleration= velocity/time
time= velocity/acceleration
time= 12/2.6
time= 4.61 seconds
Why does a lunar eclipse last for a few hours whereas a solar eclipse only lasts for a few minutes?
Select one:
a.
The moon takes more time to travel through the earth’s umbra.
b.
Because the moon is moving much more slowly than the sun.
c.
Solar and lunar eclipses actually last about the same time.
d.
Because the sun is stationary and the moon is moving.
Answer:
The type and length of a lunar eclipse depend on the Moon's proximity to either node of its orbit. ... A total lunar eclipse can last up to nearly 2 hours, while a total solar eclipse lasts only up to a few minutes at any given place, due to the smaller size of the Moon's shadow.
Identify the magnetic North Pole of earth's magnet
Answer:
Using a Compass to Identify Magnet North Pole
Watch carefully at where the compass needle points. The point that normally points to the north pole of Earth should point to one end of the magnet. That end is actually the South pole of the magnet
Explanation:
Hope it help you
Plz mark my answer brainliest✍️✍️
-A 180 kg hippo is riding a bicycle at a speed of 6.0
m/s. Out of nowhere, a chimpanzee runs out in the
hippo's path and he must slam on his brakes. If the
bicycle's brakes exert a force of 1600 N, how
long will it take to stop the bicycle? _s
Answer:
0.0675 seconds
Explanation:
From the question,
We apply newton's second law of motion
F = m(v-u)/t.................... Equation 1
Where F = force exert by the brake, v = final speed, u = initial speed m = mass of the bicycle, t = time.
make t the subject of the equation
t = m(v-u)/F................... Equation 2
Given: m = 180 kg, u = 6.0 m/s, v = 0 m/s (comes to stop), F = -1600 N ( agianst the dirction of motion)
Substitute these value into equation 2
t = 180(0-6.0)/-1600
t = -1080/-1600
t = 0.0675 seconds.
1/2 means that the voltage (or charge) of the system will increase to half more of what is left in a time equal to t1/2 seconds. Therefore if a system is already at half charge (t1/2 seconds after starting) then after t1/2 more seconds the system will be charged to 50% plus half of 50%. That is 25% more, or 75% of the entire charge. Let's say that four t1/2's have gone by. That means that the charge (or voltage) is at (50% + 1/2*50% + 1/2*1/2*50% + 1/2*1/2*1/2*50%) = 93.75% of maximum charge. Yikes! Now look in your manual for a more simple mathematical derivation of this concept. Given t1/2 to be 0.4406 seconds, how long should it take to reach 75% of maximum charge? answer in seconds.
Answer:
The answer is "0.047".
Explanation:
Given value:
[tex]\to t_{\frac{1}{2}}= 0.4406\\\\\to V=0.9375 V_{max}[/tex]
Calculating the capacitance:
[tex]\to V=V_{max} (1-e^{\frac{-t}{Rc}})[/tex]
In this, the t = time, which is taken to calculates its maximum voltage.
[tex]\to 0.9375 V_{max} = V_{max}(1-e^{- \frac{t}{103\times(165.279\times10^{-6})}})\\\\\to e^{- \frac{t}{103\times(165.279\times10^{-6})}}= 0.0625\\\\\to - \frac{t}{103\times(165.279\times10^{-6})} = \ln(0.0625)\\\\\to -t= 0.01702\times(-2.77258) \\\\ \to -t = -0.04719 \\\\ \to t= 0.04719 \approx 0.047 \ s[/tex]
what is CHA-CHA-CHA.
Answer:
The cha-cha-cha, is a dance of Cuban origin. It is danced to the music of the same name introduced by Cuban composer and violinist Enrique Jorrin in the early 1950s. This rhythm was developed from the danzón-mambo
Fnet = 110 N
m = 1000 kg
275 N
395 N
Opposing force = 560 N
N= 275 N
f=560 N
N= 395 N
A=? Please need help to pass:(
Answer:
15 N. 5 N. 4.1 The Concepts of Force and Mass. Mass is a measure of the amount ... 275 N + 395 N – 560 N = +110 N ... If the mass of the car is 1850 kg then, by ... For two particles that have masses m1 and m2 and are ... N. Moreover, the water applies an opposing force R, whose magnitude is R = 40.0 × 103 N. The tanker ...
Explanation:
State galileo's law of inertia
Answer:
Galileo's law of inertia states that; if no net force acts on an object, the object maintains its state of motion.
(The first law of motion is also known as Galileo's law of inertia)
A 5000ton freight is moving at a speed of 10mph, next to it a 3250lb Ferrari is moving at a speed of 250mph. Both hit the breaks, but who stops first?
Answer:
The truck because it has more weight to slow it down also it's only going 10mph
The Ferrari with less momentum will stop first.
The given parameters:
Mass of the freight, m1 = 5000 ton = 4535924 kgSpeed of the freight, v1 = 10 mph = 4.47 m/sMass of the Ferrari, m2 = 3250 lb = 1474.175 kgSpeed of the Ferrari, v2 = 250 mph = 111.76 m/sThe momentum of each vehicle is calculated as follows;
P1 = m1v1 = 4535924 x 4.47 = 20,275,580.28 kgm/s
P2 = m2v2 = 1474.175 x 111.76 = 164,753.8 kgm/s
[tex]Ft = mv\\\\t = \frac{mv}{F}[/tex]
When the same force is applied, the object will less momentum will stop first.
Since the vehicle less momentum will stop first, thus we can conclude that the Ferrari with less momentum will stop first.
Learn more about momentum here: https://brainly.com/question/7538238
20 points + Brainliest. Please help!
Which process represents a charge from disorder to order?
A. The free expansion of a gas into a vacuum
B. The condensing of a gas to a liquid
C. The melting of an ice cube in warm water
D. The flow of heat from the interior of a refrigerator to the exterior.
Answer:
C. the melting of an ice cube in warm water
Answer: d,a,b,c
i think i dont know if u asked for this answr. but i hope this helped
Explanation:
Hey can someone please help answer this question?
A child rides near the edge of a merry-go-round that rotates on a frictionless axis. If the child walks
toward the center of the merry-go-round, will the angular momentum change if a) the child is the
system? b) the system is the child-merry-go-round
Wouldn’t the two be the same? Because it is simply speaking about the child’s angular momentum?
Answer:
yes ............................................ks
Explanation: is good
Brad has three beakers of water. Each beaker contains 500 mL of water. The temperature of the water in the first beaker is 40°C. The water in the second beaker is at 100°C, and the water in the third beaker is at 60°C. As part of a lab experiment he will carefully combine the water in all three beakers. He predicts that the combined water will have a final temperature of 50°C.
Evaluate Brad’s claim and clearly state whether he is correct or not. Explain your answer to support your evaluation.
Explanation:
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What determines what we call the phases of the
moon?
Different fractions of the moon
Areas of the moon we cannot see
Days on the calendar
No answer text provided.
in a nuclear plant, 1 * 10 ^27 J of energy is available from mass conversion How much mass was lost ?
Answer:
[tex]1.2\times 10^{10}\ kg[/tex]
Explanation:
Given that,
The energy of the nuclear plant, [tex]E=10^{27}\ J[/tex]
We need to find how much mass wast lost.
The relation between energy and mass is given by :
[tex]E=mc^2[/tex]
Where
c is speed of light
[tex]m=\dfrac{E}{c^2}\\\\m=\dfrac{10^{27}}{(3\times 10^8)^2}\\\\m=1.2\times 10^{10}\ kg[/tex]
So, [tex]1.2\times 10^{10}\ kg[/tex] of mass was lost.
A _____ is a device that uses a smaller current to control a larger current. fuse rheostat relay switch circuit breaker
Answer:
relay switch
Explanation:
relay switch is the answer
What is a gear. Please give detailed explanation
Answer:
gear is part of vehicle.it helps.
Answer:
Explanation:
A gear is a device that transfers mechanical energy from on point to another.
Why is oxygen more chemically reactive than nitrogen?
Answer:
O2 has two more electrons compared to N2, with extra 2 electrons in the higher energy anti-bonding orbitals known as Diradical. These electrons have higher energy and are unpaired; therefore, O2 is more reactive
Explanation:
Answer:
O B. Oxygen needs to gain only 2 electrons to have a full octet, while nitrogen needs to gain 3.
Explanation:
RNA is ______________________stranded. It _______________ leave the nucleus, unlike DNA. It still consists of __________________, however the _____________ in the backbone of the strand is different than in DNA.
The nitrogenous bases are different in RNA; instead of Thymine, Adenine now pairs with _____________________.
Answer:
See below
Explanation:
RNA is single-stranded. It does leave the nucleus, unlike DNA. It still consists of strands, however, the ribose in the backbone of the strand is different than in DNA.
The nitrogenous bases are different in RNA; instead of Thymine, Adenine now pairs with Cytosine.
A horizontal force 20N is required to just slide a block of mass 6kg on a horizontal platform. The coefficient of limiting friction between the block and the platform is ?( g = 10 m/s).
Answer:
0.33
Explanation:
R= 60N
coefficient of limiting friction = F/R
= 20/60 = 0.33
What causes a ray of white light to split into seven colors when passed through
prism?
Answer:
Dispersion of light
Explanation:
ucelena rolls a 7.0 kg bowling ball down the alley for the league championship. One pin is still standing, and Lucelena hits it head-on with a velocity of 9.0 m/s. The 2.0 kg pin acquires a forward velocity of 14.0 m/s. What is the final momentum of the bowling ball? Before the collision After the collision m1 = v1 = m2 = v2 = m1 * v1 + m2 * v2 p1 = m2 = v2 = p1 + m2 * v2 Elastic collision and isolated collision, we can apply the law of ___________________________. So, I can say:
Answer:
no emtiendo 98989
Explanation:
Molly is pulling a cart down the hallway. She stops at each classroom and collects a stack of books from each teacher. After stopping at 5 classrooms, she can no longer move the cart by herself and her friend Regan needs to help her pull the cart. How does this SHOW Newton's 3rd Law? Do NOT just state the law!!
Answer:
His third law states that for every action or force in nature there is an equal and opposite reaction.
Explanation:
The heavier the books get, the harder it is for Molly to exert enough force to move the cart.
I hope this helps!!!!!! Please mark me brainliest!!
What is the recommended minimum amount of daily exercise for teenagers?
Answer:
The minimum amount should be 30 minutes three times a week.
Explanation:
What is one source error associated with self-report inventories, and what is one of its solutions?
Answer:
Explanation:
One source error is deliberate deception, and one of its solutions is having a lie scale inserted into the assessment. Another source error is social desirability, and one of its solutions is locating questions sensitive to bias and changing or dropping them. Another source error is response set, and two of its solutions are using word variations and writing questions on the assessment in different ways.
HELPPP PLEASE URGENT
How do prey and predator affect the resources in an environment?
Which pair of element types is most likely to share valence electrons in a
covalent bond?
A. Two metals
B. A metal and a nonmetal
C. Two nonmetals
D. A metal and a metalloid
Answer:
It's C, you guys!!!!
Explanation:
