Could you explain thoroughly why the amswer is D for Q6, B for Q7
(and why the other choices are not right?)
Questions 6-8 Wire X Ix Wire Y I Two long, straight, parallel wires are held fixed, as shown above. A voltage is applied to wire X, creating a current Ix to the right, and the wire experiences a magne
Answers
The current is moving up in wire Y and the magnetic field is pointing downward (into the page), the force points to the left.
In Question 6, the direction of the magnetic field is found using the right-hand rule.
When the thumb points in the direction of the current, the fingers wrap around in the direction of the magnetic field. Since the current is moving to the right in wire X, the magnetic field points into the page, or downward.
Question 6: The correct option is (D) into the page. Choices (A), (B), and (C) are all incorrect because they all point the magnetic field out of the page, or upward.
In Question 7, the direction of the force on wire Y is found using the right-hand rule. When the index finger points in the direction of the magnetic field and the middle finger points in the direction of the current, the thumb points in the direction of the force.
Since the current is moving up in wire Y and the magnetic field is pointing downward (into the page), the force points to the left.
Question 7:
The correct option is (B) to the left. Choices (A), (C), and (D) are all incorrect because they all point the force in the opposite direction, to the right.
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Related Questions
An 800 kHz radio signal is detected at a point 3.2 km distant from a transmitter tower. The electric field amplitude of the signal at that point is 320 mV/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. The magnetic field amplitude of the signal at that point, in nT, is closest to:
Answers
Answer:
1.07 nT
Explanation:
We know that E/B = c where E = electric field amplitude = 320 mV/m = 0.32 V/m, B = magnetic field amplitude and c = speed of light = 3 × 10⁸ m/s.
So, B = E/c
Substituting E and c into B, we have
B = E/c
= 0.32 V/m ÷ 3 × 10⁸ m/s
= 0.1067 × 10⁻⁸ T
= 1.067 × 10⁻⁹ T
= 1.067 nT
≅ 1.07 nT
What is the percent increase in the vapor pressure of water when the temperature increases by 1 °c from 14°c to 15°c.
Answers
The Vapor Pressure of water increases by 5.1%. when the temperature increases by 1 °c from 14°c to 15°c.
The vapor pressure of a liquid, sometimes referred to as the equilibrium pressure of a vapor above its liquid, is the pressure of the vapor produced by the evaporation of a fluid (or solid) over a sample of the liquid (or solid) in such a closed container (or solid).
Vapor pressure is the term for the force that is produced as liquids evaporate. Three factors commonly have an effect on a vapor press: surface area, intermolecular forces, and temperature. The vapor pressures of molecules change with temperature.
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An unknown material has a mass of 3.5 g and a volume of
5.5 cm3 What is the density of the material? Round to the nearest tenth.
Answers
Explanation:
Density=mass/volume
density= 3.5 g ÷ 5.5cm
density=0.63
ASAP
In an experiment, students were given an unknown mineral. The unknown mineral was placed in 150 ml of water. Once in the water, the volume went up to 165 ml. Then when the same object was dried, then massed on a balance. It had a mass of 225 grams. What is the density of the unknown mineral? Note: You only have to fill in the numerical answer.
Answers
Answer:
15
Explanation:
225/(165-150)=15g/cm3
I NEED THIS ANSWER QUICK!
About how much precipitation in the water cycle occurs over the ocean?
A) 15 percent
B) 50 percent
C) 78 percent
D) 100 percent
Answers
Answer:
Hello, I'm here to help you.
↬ 78%
Explanation:
↬ Think that about 70% of the area of the earth is covered by the ocean.
↬ So the precipitation that falls on it is a smiliar percentage.
an astronomer from a distant star is observing the sun exactly in the plane of jupiter plot schematically the brightness of the sun he would observe it during the 50 (earth) years period.
Answers
The astronomer from a distant star observing the Sun exactly in the plane of Jupiter would observe fluctuations in the brightness of the Sun over a 50-year period.
The astronomer would observe a pattern of fluctuations in the brightness of the Sun over the 50-year period. This pattern would reflect the solar cycle and the varying levels of solar activity. To plot the brightness of the Sun during this period, you can use a graph with time on the x-axis and brightness on the y-axis. The graph would show peaks and valleys representing periods of increased and decreased brightness.
It's important to note that the exact shape of the graph would depend on the specific phase of the solar cycle when the 50-year period starts. If it starts during a period of increased solar activity, the graph would have a higher peak. If it starts during a period of decreased solar activity, the graph would have a lower peak. Overall, the astronomer would observe fluctuations in the brightness of the Sun over the 50-year period, reflecting the solar cycle and the varying levels of solar activity.
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According to Hooke's law, the force necessary to stretch or compress a spring is proportional to what value?
Answers
Answer:
displacement
Explanation:
Hookes Law describes the elastic properties of materials only in the range in which the force and displacement are proportional (displacement = change in length).
in a double-slit experiment, the slit separation d is 2.00 times the slit width w. how many bright interference fringes are in the central diffraction envelope
Answers
The number of bright interference fringes in the central diffraction envelope is 3.
To determine the number of bright interference, we need to understand the equation of first minima in the diffraction pattern, and the equation of angular locations of the double slit interference pattern.
For the equation of first minima in the diffraction pattern is:
\(W\)·\(Sin\)θ = \(m_{1}\)·λ
For the equation of angular locations of the double slit interference pattern is:
\(d\)·\(Sin\)θ = \(m_{2}\)·λ..... (1)
Here, W is single slit width while d is slit separation
Next, we need to determine the number of bright interference fringes in the central diffraction envelope.
For the first minima, \(m_{1} = 1\), then rewrite the equation (1) as follows.
=\(a\)·\(Sin\)θ = \(m_{1}\)·λ
=\(a\)·\(Sin\)θ = \(1\)·λ
=\(a\)·\(Sin\)θ = λ..... (2)
Then, from the equations (1) and (2)
\(=m_{2}=\frac{d}{w} \\=m_{2}=\frac{2w}{w}\\=m_{2}=2\)
Therefore, there are 3 bright fingers, 1 at the centre and 2 in each side.
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LuLu mixes a solution of vinegar for a homemade salad dressing she is making. She makes 300 mL of vinegar by mixing 135 mL acetic vinegar with water. What is the percent by volume of the solute? Use details to support your answer.
Answers
Answer:
50%
Explanation:
From the question given above, the following data were obtained:
Volume of solution (acetic vinegar + water) = 300 mL
Volume of solute (acetic vinegar) = 150 mL
Percentage of solute (acetic vinegar) =.?
We, can determine the percentage of the solute (acetic vinegar) in solution by doing the following:
Percentage of solute = volume of solute / Volume of solution × 100
Percentage of solute = 150/300 × 100
Percentage of solute = 50%
Thus, the percentage of the solute in the solution is 50%
2. An object's weight is proportional to its _ or _ from another object
Answers
Answer:
mass
gravitational pull
Check
What happens to the light coming from the Sun?
What happens to light on the surface of water?
What happens to light on the surfaces of rocks?
Photo by Andres Nieto Porras
Answers
2.speculated reflection
3.diffuse reflection
how many milliseconds after the switch moves does vo equal -90 v ? express your answer in milliseconds to three significant figures.
Answers
To answer this question, we need to consider the equation that relates the voltage across a capacitor to its charge and capacitance:
V = Q/C
where V is the voltage, Q is the charge on the capacitor, and C is the capacitance.
At the instant the switch is moved, the capacitor is fully charged to 100 V. When the switch is moved, the capacitor discharges through the resistor R with a time constant of R*C. We can use the equation:
V = Vo*e^(-t/RC)
where Vo is the initial voltage across the capacitor (100 V), V is the voltage at time t, and RC is the time constant (R*C).
We want to find the time it takes for V to reach -90 V. Setting V = -90 V, we get:
-90 = 100*e^(-t/RC)
Solving for t, we get:
t = -RC*ln(0.9)
Plugging in the values for R and C, we get:
t = -10^4*10^-6*ln(0.9) = 6.93 ms
Therefore, it takes approximately 6.93 milliseconds for the voltage across the capacitor to reach -90 V after the switch is moved.
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what is conservation of energy in physics?
Answers
Answer:
https://www.khanacademy.org/science/physics/work-and-energy/work-and-energy-tutorial/a/what-is-conservation-of-energy
Explanation:
Look at this website it gives you all the details! :)
T4. Lisa uses some glue to fix a broken plate. She puts the glue under a desk lamp but the glue
doesn't dry. Then she puts the glue out in the sun and it dries. Why does light from the sun dry the
glue when light from the desk lamp does not?
a. Because the glue can take in energy from the light from the sun but not from the light from
the lamp.
b. Because light from the sun pulls energy out of the glue and light from the desk lamp does
not.
C.
Because the sun gives off a type of light that carries energy, and light from the desk lamp
does not.
d. Because light from the sun carries heat molecules, and light from the desk lamp does not.
Answers
The light from the sun dry the glue when light from the desk lamp does not because the sun gives off a type of light that carries energy, and light from the desk lamp does not.
Option c is correct.
Describe the sun?The sun emits a broad spectrum of light, including ultraviolet (UV) light, which carries more energy than visible light from a desk lamp.
When the UV light from the sun hits the glue it causes chemical reactions that result in the drying of the glue.
So we know that the light from the desk lamp may not have the right type of energy to initiate the necessary chemical reactions for the glue to dry.
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Janel did an experiment to see which spices can kill bacteria. She mixed a spice with bacteria food called agar. She poured the agar and spice mix into a petri dish(a plate used for growing bacteria) and added bacteria. She did the same for five different spices. This is an example of
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Answer:
Antibacterial activity
Explanation:
The antibacterial property does not allow bacterias to live in an environment. Many spices have the ability to show antibacterial activity, few of these spices can be named as cinnamon, turmeric, or clove. Because they have antimicrobial or antibacterial characteristics that is why they are used for food preservation, disease prevention, and provide many health benefits. But, not every spice has antibacterial characteristics, that is why Janel experimented with five different spices to see which amongst them possess antibacterial characteristics.
Hence the correct answer is Antibacterial activity.
What does mass of an object depend on
Answers
Answer:
the inertia of an object
PLEASE HELP!!! ILL MARK BRAINLYEST!!
How many atoms are in 5 C?
7
5
3
4
6
Answers
Answer:
Explanation:
3.011 x 10^24 atoms
Answer:
jskskskssksksksskssksksksksks
Explain why the student should open the switch after each
reading.
Answers
Answer:
Maybe to get different readings
Problem 08.058-RC op amp circuit with stepped voltage, find voltage expression with time constant If 4-8, obtain an expression for the voltage vy as labeled in the op amp circuit. www 5012 The expression of vis 8 mF www e-TV, where Tis ms.
Answers
The voltage expression for vy in the given RC op amp circuit with a stepped voltage can be obtained by considering the time constant. If the time constant is 4-8, and the expression for the voltage across the resistor R is 8 mF, where T is in ms, the expression for vy can be derived.
In the given RC op amp circuit, the voltage across the resistor R is given by the expression vy = vis * (1 - e^(-t/RC)), where vis is the input voltage, t is the time, R is the resistance, and C is the capacitance.
Given that the time constant is 4-8, we can assume that the product of R and C is equal to this time constant. Let's assume RC = τ, where τ lies between 4 and 8.
Substituting RC = τ and the given expression for vis as 8 mF (where T is in ms), we can write the voltage expression as vy = 8 * (1 - e^(-t/τ)).
This expression represents the voltage across the resistor R, labeled as vy in the op amp circuit, as a function of time and the time constant τ.
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What is the weight of a 179 kg football player?
Answers
20 POINTS
PLEASE HELP THIS IS DUE IN 5 MINUTES
please do not troll or put the wrong answer
Answers
Answer:
I believe the answer is B.
Explanation:
Newton's First Law of Gravity states, "The greater the weight (or mass) of an object, the more inertia it has. Heavy objects are harder to move than light ones because they have more inertia. "
The answer is D.
All objects travel at the same speed due to gravity.
I hope I helped! Sorry if my inference was incorrect.
Please answer the question below. No files, No Docs, or any Link. ONLY REAL ANSWER. Whoever, answers this question will get 50 points plus a 5 star rated.
Voting is a fundamental right in our democracy and the attendees at Boys State understand this. How would you describe this responsibility to someone who says they never vote because it doesn’t make any difference?
Answers
Answer: i don’t know maybe later i will ask thAT question
Explanation:
Why are the electrons knocked from their orbits in the creation of plasma?
Answers
Answer:
atoms in hot gas moves so fast that if they collied witheach other sometimes electrons knocked.
Answer:
atoms in hot gas moves so fast that if they collided with each other electrons knocked.
Explanation:
How do you write an inverse variation equation given X and Y?
Answers
The formula xy = k or y = kx can be used to represent an inverse variation. If a nonzero constant k exists such that xy = k or y = kx where x≠ 0, y ≠ 0, then y varies inversely as x.
What is inverse variation?A variable is inversely varying with respect to another variable when the term "inverse variation" is used. It symbolizes how two quantities are inversely related. This means that one variable is inversely proportional to another. Relationship in mathematics between two variables that can be described by an equation in which the sum of the two variables equals a constant.
As one quantity rises, the other falls for two quantities with inverse variation. For instance, as your speed increases while travelling to a specific location, it will take you less time to get there.
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If the maximum moment of force on a door is 10 Nm by an applied force of 2.25 N, then the distance of handle
Answers
Answer:
d = 4.44 m
Explanation:
Given that,
The moment of force on a door = 10 N-m
The applied force, F = 2.25 N
We need to find the distance of the handle. The moment of force is given by :
\(\tau=F\times r\)
Where
r is the distance of the handle.
\(r=\dfrac{\tau}{F}\\\\r=\dfrac{10}{2.25}\\\\r=4.44\ m\)
So, the required distance is equal to 4.44 m.
The velocity of a particle traveling along an axis is given. Near what time is the instantaneous acceleration equal to 0?.
Answers
When the velocity of a particle moving along an axis is known, the instantaneous acceleration equal to zero is given as 0.6t.
What is the formula for immediate acceleration?We estimate the average speed between two places in time separated by t while allowing t to decrease. The outcome is the velocity function's derivative, v. (t).
The slope of the tangent line to the graph at any given location on the graph corresponds to the instantaneous acceleration there. The instantaneous acceleration of the particle is equal to 0 when this line is horizontal and has a slope of 0. According to the plot, these times correlate to the velocity function's extrema, which can be found at t = 1.75, 2.75, 3.25, and for all t = 4.
t = 0.6 is the most likely choice.
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Hanging from a tree branch is doing work?
Answers
Explanation:
The branch is possessing gravitational potential energy.
The potential energy of a pear is 5.0 joules. The pear is 4 m high. What is the mass of the apple?
Answers
Answer:
rrteertewtagtewyewtyewtewy
Explanation:
For an observer who stays in one spot when the source of a sound is moving,
the sound wave's:
OA. amplitude increases.
B. amplitude decreases.
OC. frequency changes.
OD. speed increases.
Answers
Answer:
Explanation:
The correct option of the given question will be option © that is frequency changes.
According to the Doppler Effect, when source is moving towards the observer then the frequency increases and when the source is moving away from the observer then the frequency decreases, but the magnitude of the amplitude in both the cases will remain same. Whereas the speed of sound waves will remain constant as it was earlier. According to this effect, when there is a relative motion between the source and the observer then there will be the change in the frequency.
So, the correct answer will be that the frequency changes.
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Energy is not
1. a scalar.
2.operationally defined.
3.measured in joules.
4.created or destroyed.
Answers
Explanation:
think4
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