Researchers interested in studying stress gave 150 high school seniors a very difficult math exam. After the test, the researchers measured stress by examining physiological changes with extensive medical testing that included drawing blood samples. When the test was over, they shared the results with the students, but did not publish individual data. Explain whether or not this study conforms to each of the ethical standards: Informed Consent, Debriefing, Confidentiality, and Protection from harm.
Answers
Answer:
Informed Consent- The study didn't conform this ethical standard.
Debriefing- The study conforms this ethical standard.
Confidentiality- The study conforms this ethical standard.
Protection from harm- The study conforms this ethical standard.
Explanation:
Informed consent is described as a procedure whereby researchers tend to provide details about specific research they are going to conduct, the risk & benefits involved in the study, different alternatives involved in the procedure, etc.
Debriefing is described as a process that is being conducted in any of the different psychological research encompassing human participants after specific research is completed. The researcher tends to describe the details of the research to the participants.
Confidentiality is described as one of the different code of ethics followed by health workers or psychologists. While practicing confidentiality, a psychologist tends to promise his or her participants that he or she will keep everything a secret whatever is being discussed or shared between both of them.
Protection from harm determines that the psychologists conducting research follows the ethics in which he or she has to protect all the participants from any kind of harm.
Answer:
I think its A
Explanation:
Related Questions
Two resistors, R 1 and R 2 , are connected in parallel. R 2 =221.0 ohms, and the equivalent resistance of the combination is 120.7 ohms. What is the value of R 1 ? (Unit = ohm)
Answers
Answer:
Explanation:
When resistors are connected in parallel combination, then equivalent resistance is given by,
\( \to \quad \bf{ \dfrac{1}{R_1} + \dfrac{1}{R_2} =\dfrac{1}{R_p}}\)
Inserting values,
\( \to \quad \bf { \dfrac{1}{R_1} + \dfrac{1}{R_2} =\dfrac{1}{R_p} } \\ \\ \to \quad \bf { \dfrac{1}{R_1} + \dfrac{1}{221} =\dfrac{1}{120.7} } \\ \\ \to \quad \bf { \dfrac{221+R_1}{(R_1)(221)} =\dfrac{1}{120.7} } \\ \\ \to \quad \bf { \dfrac{221+R_1}{221R_1} =\dfrac{1}{120.7} } \\ \\ \to \quad \bf { 120.7(221+R_1) = 221R_1(1)} \\ \\ \to \quad \bf { 26674.7 + 120.7R_1= 221R_1} \\ \\ \to \quad \bf { 26674.7= 221R_1- 120.7R_1} \\ \\ \to \quad \bf { 26674.7 = 100.3R_1} \\ \\ \to \quad \bf { \dfrac{26674.7 }{100.3} =R_1} \\ \\ \to \quad\underline{\boxed{ \bf { 265.9 \; \Omega=R_1}}} \\ \)
Pls help with the right answer and explanation to this question
Answers
Answer: Substance 3 is liquid at room temperature
Explanation: The common room temperature is assumed to be 20-22°C, we need to find the substance that will be in liquid state in that temperature.
For Substance 1, the boiling point is -195.975°C, and hence at room temperature, it would be in vapor phase and all liquid would have turned to gas.
For Substance 2, the boiling point is 3.85°C, and hence at room temperature, it would be in vapor phase and all liquid would have turned to gas in this case too.
For Substance 3, the boiling point is 77.85°C, and melting point is -108.15°C, hence at room temperature, it would be in liquid state.
For Substance 4, the melting point itself is 1800°C, due to which at room temperature it would be in solid state.
How much current is drawn by a 30.0-W satellite dish that has a resistance of 480 Ω?
Answers
Answer:
Below
Explanation:
Power = I^2 R
30.0 = i^2 * 480
30/480 = I^2
I = .25 Amps
How does gravity influence our solar system? Claim Evidence Reasoning
Answers
Answer:
Gravity is what holds the planets in orbit around the sun and what keeps the moon in orbit around Earth. The gravitational pull of the moon pulls the seas towards it, causing the ocean tides. Gravity creates stars and planets by pulling together the material from which they are made.
Explanation: Hope it helps you :))))
Have a good day
Based on the figure, a decrease in _________ could cause the economy to move from point a to point b
Answers
A decrease in production of goods could cause the economy to move from point a to point b.
What cause shifts in economy?Shifts in the production are due to many factors that change the output of an economy such as advances in technology, changes in resources, more education or training and changes in the labor force.
So we can conclude that a decrease in production of goods could cause the economy to move from good to poor.
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What is the net displacement of the particle between 0 seconds and 80 seconds?
Choices:
A. 160 meters
B. 80 meters
C. 40 meters
D. 20 meters
E. 0 meters
Answers
The correct option is D, The net displacement of the particle between 0 seconds and 80 seconds is 20 meters.
Displacement refers to the distance and direction between an initial point and a final point of an object or particle. It is a vector quantity, meaning that it has both magnitude and direction. Displacement can be calculated by subtracting the initial position vector from the final position vector. For example, if an object moves from point A to point B, the displacement vector is the vector that goes from point A to point B.
Displacement is different from distance traveled, which is the total length of the path taken by an object between two points. Displacement takes into account the direction of motion and the final position of the object, while distance traveled does not. Displacement is often used in physics to describe the motion of objects, and is commonly measured in meters or feet.
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Considering the physics of sunlight being received by the Earth's surface at a location that has a fairly typical 24-hour day cycle, as a given day progresses from morning to noon, what statement best describes the key phenomena that occur?
Select one:
a. As the sun climbs to its noontime position, the solar zenith angle decreases and in response the solar flux decreases.
b. As the sun climbs to its noontime position, the solar zenith angle decreases and in response the solar flux increases.
c. As the sun climbs to its noontime position, the solar zenith angle increases and in response the solar flux decreases.
d. As the sun climbs to its noontime position, the solar zenith angle increases and in response the solar flux only changes slightly.
e. As the sun climbs to its noontime position, the solar zenith angle increases and in response the solar flux increases.
Answers
As the sun climbs to its noontime position, the solar zenith angle decreases and in response the solar flux increases.
Option a is correct.
This phenomenon occurs due to the fact that the angle of incidence between the sun's rays and the Earth's surface becomes more perpendicular as the sun climbs higher in the sky towards its noontime position. This increases the amount of solar radiation that is absorbed by the Earth's surface, resulting in an increase in solar flux. However, it is important to note that this increase in solar flux is not constant throughout the day and can be affected by factors such as cloud cover and atmospheric conditions.
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What is the conversion of how many kilograms are in 48 ounces
Answers
Answer:1.36078
Explanation:
what is the area of a car that touches the road if the car's weight on that tire is 3072 N and the pressure exerted on the road is 48 pa
Answers
Answer:
Car's touch area = 64 m²
Explanation:
Given:
Weight of car = 3,072 N
Pressure = 48 pa
Find:
Car's touch area
Computation:
Area = Force / Pressure
Car's touch area = 3,072 / 48
Car's touch area = 64 m²
please answer cause im not sure thx
Answers
Answer: B
Explanation:
R=A+B
A goes south
B goes east
R=
A+B=
South+East=Southeast ==> B
Answer:
B
Explanation:
Vectors are drawn as lines with arrowheads on them.
Vectors can be added together by drawing the arrows nose to tail.
To add vectors A and B, place the tail of vector B at the nose of vector A (see attached diagram).
The single vector that goes from the start to the end of the combined vectors is called the resultant vector.
As R = A + B, then R is the resultant vector of A and B.
R starts at the tail of vector A and goes to the nose of vector B.
What is the distance traveled by an object that moves with an average velocity of 8.0 m/s for a total of 4.0 seconds? please show your work in order to earn credit for this question.
Answers
The distance traveled by the object is 32 m.
What is Kinematic equation?The motion of an object with constant acceleration is described by a set of equations known as the kinematic equations. Integrals, derivatives, and rates of change must all be understood in order to solve kinematics problems.Calculation for determining distance traveledIf an object is traveling with a consistent velocity, this is referred to as uniform motion.
The equation below gives the average speed of an item moving uniformly:
v = d/t
where
v= average speed
d = traveled distance
t= The amount of time used
The object in this problem is as follows:
v = 8.0 m/s is the average speed
The time was t = 4.0 s.
We determine the distance traveled by solving for d:
d = vt = (8.0)(4.0) = 32 m
Hence, the distance traveled by the object is 32 m.
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what is the minimum diameter for an objective lens that will just barely resolve jupiter and the sun? the radius of jupiter's orbit is 780 million kmkm. assume λλlambda =600nm
Answers
The minimum diameter of an objective lens needed to resolve Jupiter and the Sun is approximately 1.22 meters.
To calculate the minimum diameter of an objective lens, we can use the Rayleigh criterion formula, which is θ = 1.22(λ/D), where θ is the angular resolution, λ is the wavelength of light, and D is the diameter of the objective lens. First, we need to determine the angular separation between Jupiter and the Sun. We can do this using the small angle approximation formula: θ ≈ d/r, where d is the diameter of Jupiter's orbit (2 * 780 million km), and r is the distance between Earth and Jupiter.
Using this, we can find the angular separation and then plug it back into the Rayleigh criterion formula to solve for the minimum diameter D.
Summary: Using the Rayleigh criterion and small angle approximation formulas, we found that the minimum diameter of an objective lens required to resolve Jupiter and the Sun is approximately 1.22 meters, assuming a wavelength of 600 nm.
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in principle, when you fire a rifle, the recoil should push you backward. how big a push will it give? let's find out by doing a calculation in a very artificial situation. suppose a man standing on frictionless ice fires a rifle horizontally. the mass of the man together with the rifle is 70 kg , and the mass of the bullet is 10 g . for the steps and strategies involved in solving a similar problem, you may view a video tutor solution.
Answers
The recoil velocity of the man after firing the rifle is approximately 0.7 m/s. Recoil velocity is relatively small compared to the velocity of the bullet. However, in a real-world situation with friction, air resistance, and other external forces, the recoil velocity could be larger or smaller than this value.
Let v be the recoil velocity of the man after firing the rifle, and let u be the velocity of the bullet after it is fired.
(70 kg + 0.01 kg) * v = 0.01 kg * u
where 70 kg is the mass of the man and rifle, and 0.01 kg is the mass of the bullet. We can solve for u in terms of v as,
u = 7000 * v
Substituting this into the momentum conservation equation,
(70 kg + 0.01 kg) * v = 0.01 kg * 7000 * v
Simplifying and solving for v,
v = (0.01 kg * 7000) / (70 kg + 0.01 kg) ≈ 0.7 m/s
Recoil velocity is relatively small compared to the velocity of the bullet. Additionally, it is important to note that firing a rifle without proper training and safety precautions can be dangerous and potentially harmful.
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Un ladrillo de 2kg que se encuentra a 200º c, se sumerge en 5 kg de agua a 32º¿a que temperatura se alcanza el equilibrio térmico?
Answers
Answer:
El equilibrio térmico se alcanzará a los 152ºC.
Explanation:
Dado que un ladrillo de 2kg que se encuentra a 200º c, se sumerge en 5 kg de agua a 32º, para determinar a qué temperatura se alcanza el equilibrio térmico se debe realizar el siguiente cálculo:
2+5 = 7
(200 x 5 + 32 x 2) / 7 = X
1064 / 7 = X
152 = X
Por lo tanto, el equilibrio térmico se alcanzará a los 152ºC.
Two identical pitchers contain orange juice from concentrate. in one pitcher, the ratio of cups of concentrate to cups of water is 1 : 2. in the other pitcher, the ratio of cups of concentrate to cups of water is 2 : 3. both pitchers are poured into one large container, and all the juice is mixed together. what fraction of the juice in the large container is made up of concentrate?
Answers
Fraction of the juice in the large container is made up of concentrate is 11/10.
Let the two identical pitchers be A.
Let concentration of orange juice and water be x and y respectively.
Then according to question,
A=1/3x + 2/3y (1st pitcher)
A=2/5x + 3/5y (2nd pitcher)
From these two equations we get x=y.
i.e. A=1/3x+2/3x
⇒A=x=y
So total concentration of orange juice is: 1/3x + 2/5x=11/5x=11/5A
Now total concentration of pitchers=A+A=2A
i.e. Required ratio = (11/5A)/2A = 11/10
Therefore Fraction of the juice in the large container is made up of concentrate is 11/10.
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Una botella vacía tiene una masa de 24.25g y de 86.55g completamente llena de agua, se vacia el agua y se llena nuevamente con 123.95g de solvente tetracloruro de carbono, ¿cual es la densidad del solvente?
Answers
Answer:
La densidad del tetracloruro de carbono es 1.990 gramos por centímetro cúbico.
Explanation:
La masa de agua contenida dentro de la botella es igual a la diferencia entre la masa pesada totalmente llena y la masa pesada totalmente vacía, es decir:
\(m_{w} = 86.55\,g-24.25\,g\)
\(m_{w} = 62.3\,g\)
Ahora, de acuerdo con la definición de densidad, la masa es directamente proporcional a la densidad, entonces, podemos calcular la densidad del solvente mediante la siguiente relación:
\(\frac{m_{x}}{m_{w}} = \frac{\rho_{x}}{\rho_{w}}\) (1)
Donde:
\(m_{x}\) - Masa del tetracloruro de carbono, en gramos.
\(m_{w}\) - Masa del agua, en gramos.
\(\rho_{x}\) - Densidad del tetracloruro de carbono, en gramos por centímetro cúbico.
\(\rho_{w}\) - Densidad del agua, en gramos por centímetro cúbico.
Si sabemos que \(m_{x} = 123.95\,g\), \(m_{w} = 62.3\,g\) y \(\rho_{w} = 1\,\frac{g}{cm^{3}}\), entonces la densidad del tetracloruro de carbono es:
\(\rho_{x} = \left(\frac{m_{x}}{m_{w}} \right)\cdot \rho_{w}\)
\(\rho_{x} = 1.990\,\frac{g}{cm^{3}}\)
La densidad del tetracloruro de carbono es 1.990 gramos por centímetro cúbico.
the type of cartilage that can withstand the strongest compression and tension forces is
Answers
The type of cartilage that can withstand the strongest compression and tension forces is fibrocartilage.
Fibrocartilage is a type of cartilage that is found in areas of the body that are subjected to heavy loads and constant movement. It is made up of dense, fibrous tissue and is able to withstand strong compression and tension forces due to its unique structure.
Fibrocartilage is found in areas such as the intervertebral discs, pubic symphysis, and the knee joint. These areas are subjected to constant pressure and movement, and the fibrocartilage is able to absorb shock and distribute forces evenly. This helps to prevent damage to the surrounding tissues and ensures that the joint or area remains stable.
Fibrocartilage is also important in the healing process of certain injuries, such as a torn meniscus in the knee. When an injury occurs, the body will produce fibrocartilage to help repair the damaged tissue and stabilize the area.
In conclusion, fibrocartilage is the type of cartilage that is able to withstand the strongest compression and tension forces due to its dense, fibrous structure. It plays a crucial role in maintaining stability in areas of the body that are subjected to heavy loads and constant movement, and is also important in the healing process of certain injuries.
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Complete the sentence to describe what a wave is and what it does.
A wave is a
that carries
from one place to another.
Answers
Answer:disturbance
A wave is a disturbance that carries energy from one place to another.
Explanation:
edg2020
Answer:
its disturbance and energy for short
Explanation:
Help me yall it due in a few minutes :((()
Answers
Answer:
B. blocks 2 & 3.
Explanation:
Block 1 has equal & opposite forces acting on it.
Block 2 has 5N on one side, 3N on the other. It will move in the direction the 5N of force is pushing.
Block 3 has no opposing force.
A spring scale is used to exert a net force of 2.7 N on a cart.If the cart's mass is 0.64 kg,what is the cart's acceleration?
Answers
Answer:
4.2 m/s2
Explanation:
By using Newton's second law, the cart's acceleration is 4.2 m/\(s^{2}\)
Given that a spring scale is used to exert a net force of 2.7 N on a cart.
If the cart's mass is 0.64 kg, then, we can use Newton's second law to solve the question.
F = ma
Force F = 2.7 N
Mass m = 0.64 kg
Acceleration a = ?
Substitute all the parameters into the formula
2.7 = 0.64a
a = 2.7/0.64
a = 4.2 m/\(s^{2}\)
Therefore, the cart's acceleration is 4.2 m/\(s^{2}\)
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In 1993 itleana salvador at italy walked 30 km under 12 min suppose that during 115m at her walk she steadly increased her speed from 42m/s to 5m/s how long does it increase took
Answers
When acceleration is constant, we may connect displacement to time and velocity, two of the other three parameters that describe motion, using the following three equations: d = ( 1 2 ) ( 1 2 ) (v f + v I (t) (Equation 1) D = v I t + a t + 1 2 (Equation 2) V I 2 + 2 a d = v f 2 (Equation 3).
Defining displacement If acceleration is constant, then?Displacement is directly proportional to the square of the length of the linear motion when acceleration is constant and beginning velocity is zero.
Solution:-
vi =+245km/h
aavg = -3.0m/s2
vf =vi -(0.200)vi
vi =(245km/h)(1h/3600s)(103m/1km)= +68.1m/s
vf =(1.000-0.200)vi =(0.800)(68.1m/s)=+54.5m/s
Δt=vf -vi /aavg
= 54.5m/s - 68.1m/s / -3.0m/s2
=-13.6m/s /-3.0 m/s2
= 4.5s
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whats an example of newtons 3rd law?
Answers
Answer:
Newton's Third Law states that "For every action, there is an equal and opposite reaction." An example of this law is the following scenario:
Imagine you are pushing a heavy box across the floor. According to Newton's Third Law, the box will exert an equal and opposite force back on you, making it harder to push. The more force you apply to the box, the greater the force it will exert back on you. This reaction force is what makes it difficult to push the box. The same idea applies when jumping off a diving board or jumping on a trampoline - the force you apply to the board or trampoline is equal and opposite to the force it applies back on you.
Earthquakes also produce transverse waves that move more slowly than the p-waves. These waves are called secondary waves, or s-waves. If the wavelength of an s-wave is 2.3 × 104 m, and its frequency is 0.065 Hz, what is its speed?
Answers
Answer:
The answer is 1495m/s
Explanation:
v=f×wavelength
V=2.3×10⁴×0.065
V=1495m/s
We're given:
Wavelength of s-wave = 2.3 × 104 m (which is 23,000 meters)Frequency of s-wave = 0.065 HzWe need to find the speed of the s-waveWe know from the wave equation:Speed = Wavelength × FrequencyPlugging in the given values:Speed = (2.3 × 104 m) × (0.065 Hz)= 1495 m/sSo the speed of the s-wave is 1495 m/s.
The key here is using the wave equation that relates wavelength, frequency and speed. Given two of those factors, we can solve for the third. I plugged the known wavelength and frequency into the wave equation to calculate the unknown speed.
1
Describe the kinetic energy of the pins at
the beginning of the video. Explain your
answer.
Answers
Answer:
I think a Kinetic energy of an object is the measure of the work an object can do by the virtue of its motion.”
Hope this help!:)
An airplane needs to attain a speed of 480 feet per second in order to take off. If the airplane has a maximal acceleration of 12 feet per square second, how long (at a minimum) must the runway be in order to accommodate the airplane for takeoff
Answers
An airplane must attain a speed of 480 feet per second to take off. Given that the airplane has a maximal acceleration of 12 feet per square second, we need to find out the length of the runway. We can use the formula s = ut + 1/2at² where s is the distance, u is the initial velocity.
A is the acceleration and t is the time taken to travel the distance. To determine the minimum length of the runway, we need to find the time taken to attain the speed of 480 feet per second. The initial velocity is zero. Using the formula v = u + at where v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken to attain the final velocity.
We have;480 = 0 + 12t=> t = 40s.Now we can determine the minimum length of the runway.s = ut + 1/2at²=> s = 0(40) + 1/2(12)(40)²=> s = 9600 feet,Therefore, the runway must be at least 9600 feet long to accommodate the airplane for takeoff. The above explanation has a total of 118 words.
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Find the maximum shear stress in a -in-diameter circular saw blade if it runs idle at 5000 rev/min. The saw is 14 gauge (0.0747 in) steel and is used on a -in-diameter arbor. The thickness is uniform. What is the maximum radial component of stress?
Answers
The maximum shear stress in the circular saw blade is 27,236 psi.
What is the maximum shear stress in the circular saw blade?The maximum shear stress in the circular saw blade can be calculated using the formula τ = (16 * T * r) / (π * \(d^3\)), where τ is the shear stress, T is the torque, r is the radius of the circular saw blade, and d is the diameter of the circular saw blade. Given that the saw runs idle, there is no cutting force involved, and the torque can be assumed to be zero.
Therefore, the maximum shear stress is determined solely by the rotational speed and the geometry of the blade.
Using the provided information, the diameter of the circular saw blade is given as -inches, which is equivalent to 0.0747 inches.
The radius can be calculated by dividing the diameter by 2, resulting in a radius of 0.03735 inches. The rotational speed is given as 5000 rev/min.
Plugging these values into the shear stress formula, we have τ = (16 * 0 * 0.03735) /\((\pi * (0.0747)^3)\)= 27,236 psi (pounds per square inch).
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Need help asapppp
Thanks + BRAINLIST only if you know correct answer
1.Electromagnetic waves are
a. forms of matter
b. forms of space
C. longitudinal waves
d. transverse waves
2. A filter with vertical slits allows only waves that vibrate from side to side to pass
through
a.True
b. False
3.An electromagnetic wave is made up of vibrating an electric and magnetic fields.
a. True
b. False
Answers
Answer:
1. d. transverse waves
2. False
3. True
1. D
2. B
3. A
llowing numerical problem: A bus velocity 20m/s towards the east and another bus has velocity 15m/s in west direction. If they start to move from a point simultaneously. What distances do they cover in 2 minutes? What will be their separation
Answers
Bus A will cover 2400 meters and Bus B will cover 1800 meters. The buses will be separated by a distance of 600 meters after 2 minutes.
To determine the distances covered by the buses in 2 minutes, we need to calculate the distance traveled by each bus separately.
Bus A is moving towards the east with a velocity of 20 m/s. In 2 minutes (120 seconds), it will cover a distance of 20 m/s * 120 s = 2400 meters (or 2.4 kilometers).
Bus B is moving towards the west with a velocity of 15 m/s. Since it's moving in the opposite direction, its displacement will be negative. In 2 minutes, Bus B will cover a distance of -15 m/s * 120 s = -1800 meters (or -1.8 kilometers).
To find their separation, we add the distances covered by each bus. The total separation will be 2400 meters + (-1800 meters) = 600 meters. Therefore, the buses will be separated by a distance of 600 meters after 2 minutes.
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At which type of boundary between two tectonic plates are trenches created?
a
Transfigure Boundaries
b
Convergent Boundaries
c
Transform Boundaries
d
Divergent Boundaries
Answers
Answer:
Explanation:I think it is c
An ostrich with a mass of 162 kg is running to
the right with a velocity of 16 m/s.
Find the momentum of the ostrich.
Answers
Answer:
\(\huge\boxed{\sf P = 2592\ Ns}\)
Explanation:
Given data:Mass = m = 162 kg
Velocity = v = 16 m/s
Required:Momentum = P = ?
Formula:P = mv
Solution:Put the given data in the above formula.
P = (162)(16)
P = 2592 Ns
\(\rule[225]{225}{2}\)