The magnitude of the magnetic force acting on the charge is 2.34×10⁻³ N.
What is magnetic force?
A magnetic force is the force that act in a magnetic field.
To calculate the magnetic force, we use the formula below.
Formula:
F = qvB.........Equation 1Where:
F = magnetic forceq = point chargev = Velocity of the the chargeB = Field strengthFrom the question,
Given:
q = 5.0×10⁻⁷ Cv = 2.6×10⁵ m/sB = 1.8×10⁻² TSubstitute these values into equation 2
F = (5.0×10⁻⁷)(2.6×10⁵)(1.8×10⁻²)F = 23.4×10⁻⁴F = 2.34×10⁻³ NHence, the magnitude of the magnetic force acting on the charge is 2.34×10⁻³ N.
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If we assume a typical efficiency for the body, as quoted in the video, how much energy input would it take to climb a ladder, increasing your body’s potential energy by 5,000 j?.
The energy input would it take to climb a ladder will be 20000 J.
What is the mechanical advantage?Mechanical advantage is a measure of the ratio of output force to input force in a system, it is used to obtain the efficiency of the given mechanical machine.
Mechanical advantage is a measure of how much a machine multiplies the input force.
The complete question is;
"if we assume a typical efficiency of 25% for the human body how much energy input would it take to climb a ladder increasing body potential energy by 5000J"
The formula for the efficiency is;
[tex]\rm E = \frac{P}{\eta} \\\\ E = \frac{5000}{0.25} \\\\ E = 20000 \ J[/tex]
Hence, the energy input would it take to climb a ladder will be 20000 J.
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A spring with a force constant of 3x10^3 Nm-1 is used to measure the mass of an object. If the spring extends by 5cm when the object is hung from it, the mass of the object is
Answer:
15.29 kg
Explanation:
F = k * d 5cm = .05 m
= 3 x 10^3 n/m * .05 m = 150 N
= 150 kg -m / s^2
150 kg- m / s^2 / 9.81 m/s^2 =15.29kg
which lens is used to treat hypermetropia ?
Answer:
convex lense
Explanation:
people with hyperopia or hypermetropia are long sighted or farsighted, so what happens here is that light doesn't focus on the surface of the retina but behind it so the picture is moved forward by positioning a convex lense in front of a hypermetropic eye and is correctly centered in the retina.
A 10-cm long pencil is placed upright 50 cm from a concave mirror with focal length 0.50 m. What will be
the characteristics of any image that is formed?
A virtual and erect image is formed by concave mirror.
What is focal length?The focal length of the mirror is the distance between the lens and the image sensor.
It is also defined as the distance from a lens or mirror to the focal point.
It is also stated by the formula
[tex]\frac{1}{y} +\frac{1}{u} = \frac{1}{f}[/tex]
u = -50 cm and f = 0.50 m (50cm)
[tex]\frac{1}{v} +\frac{1}{-50} =\frac{1}{50}[/tex]
v= -50 cm
where - sign shows that image is virtual.
Magnification m= [tex]\frac{v}{u}[/tex]
m = -50/50
m = 0
hence, virtual and erect image will be formed.
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A solenoid is configured to produce a magnetic field of 0.027T at its center. it has radius 1.4 cm and length 40cm and the wire can carry a maximum length of 12.0A. What is the total length required
The total length of the wire required is 63 m.
What is current?The current is the stream of charges which flow inside the conductors when connected across the end of voltage.
Given is a solenoid is configured to produce a magnetic field of 0.027T at its center. it has radius 1.4 cm and length 40cm and the wire can carry a maximum current of 12.0 A.
Radius, r = 1.4cm = 0.014 m
Length l = 40 cm = 0.4 m
If the current is I, then the magnetic field in solenoid is given by
B = μ₀ n I
By substituting the values, we get
0.027 = 4π x 10⁻⁷ x n x 0.4
n = 1792 turns/unit length
Total length of wire = circumference x Turns
L = 2πr x N
where N = nl
Plug the values, we get
L = 2π x 0.014 x1792 x 0.4
L = 63 m
Thus, the total length of the wire is 63 m.
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Which of the following situations would cause the greatest decrease in the motion of molecules in a system
Answer:
Actually, the correct answer is D. The system releases 75 J of heat, and its volume doubles.
Explanation:
I took this computer-scored test, and while I was stuck on this answer for a while, I was able to get 100%. This was my thought process:
We know that molecular motion increases with an increase in temperature, because collisions increase. For that reason, for molecular motion to decrease in a system, as the question states, the system must RELEASE heat and decrease in temperature. Additionally, when a system's volume is smaller, its molecular motion increases. This is because the molecules hit the container more easily and more often. If the volume is halved then, the molecules would have MORE motion, which we aren't looking for in this question! Therefore, the volume must DOUBLE so that less molecular motion takes place. The answer is D! :)
Deena made a chart to summarize features of a velocity vs. time graph for objects with constant acceleration and objects with constant velocity.
The statement which best describes Deena's error is: B. Include the area of the rectangle under the line to find displacement for constant acceleration.
What is a velocity vs. time graph?A velocity vs. time graph can be defined as a type of graph that is used to graphically represent the rate of change of velocity of an object with respect to time.
Based on the information provided in the table shown (see attachment), the statement which best describes Deena's error is her not including of the area of the rectangle under the line, so as to enable her find displacement for constant acceleration.
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Complete Question:
Deena made a chart to summarize features of a velocity vs. time graph for objects with constant acceleration and objects with constant velocity.
Which best describes Deena's error?
A. The line for constant velocity is not horizontal; it is diagonal and slopes downward.
B. Include the area of the rectangle under the line to find displacement for constant acceleration.
C. Find acceleration by finding the area of the rectangle above the line.
D. Find velocity by calculating the slope of the line.
Friction is a ____________ force
a. Artificial
b. Natural
c. Pessimistic
d. Negative
Answer:
natural is the answer
Friction is a natural force which exist
The main source of information used by astronomers to learn about objects in space is.
A practical machine cannot be 100% efficient?
please give me the answer.
[tex]\huge\color{Basic}{\boxed{\tt{answer}}}[/tex]
A practical machine cannot be 100% efficient? IF THE CHOICES ARE TRUE OR FALSE THEN U GOThe answer is false a machine cannot be 100 percent efficient because the output of a machine is always less than input. (correct me if I’m wrong)Have a great day<3Answer: yes it cannot be 100% efficient
Explanation:
only an ideal machine with 0 friction can have 100 percent efficiency
a standby generator is connected to 1540 w lamps and a musicians 600w amplifying system how much energy is used if the generator is used for 6 hours
Answer:2140 watts x 6 hours =12.84 kWh. Are you looking for specific type units such as Jules?
how to find the sum of a convergent series
The formula that can be used to obtain a convergent series is given by;
a/1 – r.
What is a series?In mathematics, we define a series as sum of numbers which could be convergent or divergent. In a convergent series, the summation of the numbers approaches a given value.
The formula that can be used to obtain a convergent series is given by;
a/1 – r.
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When water vapor (a gas) starts to cool, it can
become a liquid. What causes this change in the
state of matter in water?
Answer:
This process is CONDENSATION
Explanation:
Condensation occurs when water vapour loses some of its kinetic energy to a colder body and changes into liquid state.
A 9.0x10^-2kg ice cube at 0.0 degrees Celsius is dropped into a styrofoam cup holding 0.35 kg of water at 13 degrees Celsius.
A. Find the final temperature of the system. Assume the cup and the surroundings can be ignored.
B. Find the amount of ice (if any) remaining.
C. Find the initial temperature of the water that would be enough to just barely melt all of the ice.
A. The final temperature of the system is 0°C.
B. The amount of ice (if any) remaining is 0.0331 g
C. The initial temperature of the water that would be enough to just barely melt all of the ice is 20.57 °C.
What is specific heat?The specific heat is the amount of heat required to change the temperature by 1°C. It is denoted by C.
Heat lost or gained is represented as
Q = m C ΔT
Given, Mass of ice, mice = 9x10⁻² kg, Mass of water, mw =0.35 kg, T = 13 °C
A. If ice is in excess, final water temperature will be 0°C.
B. Specific heat of water Cp = 1000 cal/kg°C
Latent heat of ice L = 80 kcal/kg
In that case, heat lost by water =Heat gain by ice
Q = mCp x dT = mL
0.35 x 1000 x 13 = m x 80 x 1000
m = 0.0569 kg of ice.
The gram of ice remaining = 0.09 - 0.0569
= 0.0331 gram of ice.
Thus, the amount of ice remaining is 0.0331 g
C. Heat required to melt 90 gram of ice, Q mL
Q = 90 x 80 = 7200 cal.
If the initial temperature of water needed = T,
mCp x dT = mL
350 x T = 7200
T = 20.57 °C
Thus, the initial temperature of the water that would be enough to just barely melt all of the ice is 20.57 °C.
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and electric motor lifts an elevator a vertical distance of 18.0m in a time of 30.0s by exerting an upward force of 6.0x10^3 N . what power does the electric motor produce?
Answer:
[tex]\fbox {3.6kW}[/tex]
Explanation:
Formula used :
[tex]\boxed {P = F \times v} \leftarrow \rightarrow \boxed {P = \frac{F \times S}{t}}[/tex]
Given :
⇒ F = 6 × 10³ N
⇒ S = 18 m
⇒ t = 30 s
Solving :
⇒ P = 6 × 10³ × 18 / 30
⇒ P = 2 × 100 × 18
⇒ P = 3600 W
⇒ P = 3.6kW
A plane is coming in to taxi at an airport. It lands parallel to the surface at 480m/s and takes exactly one minute to come to a complete stop. What is its acceleration?
The acceleration of the plane will be −8 m/s²
How to find the acceleration of a plane?
Acceleration is the rate of change in velocity over time (Δv/t).
Given, that the initial velocity of the plane u=480 m/s
The final velocity of the plane is zero after landing, v= 0 m/s
t= 1 minute= 60 seconds
we know, v=u + at
0= 480 + 60a
a=[tex]\frac{-480}{60}[/tex] = -8m/s²
Thus, the acceleration of the plane is -8 m/s²
(negative acceleration implies that the object is slowing down)
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what is momentum help ASAP
Momentum is the rate of increase in speed or decrease in speed after application of force
The formula is given by
p=mvp is momentum
m is mass
v is velocity
Which processes occur during the second stage of technological design? Check all that apply.
designing a solution
studying relevant information
rebuilding and retesting
reporting a solution
defining criteria of success
identifying a problem
building a prototype
Answer:
designing a solution
Explanation:
after knowing & identifying a problem we start putting a solution
Kinetic energy of a body is increased by by 300% what is percentage increased in momentum
Answer
100% - double
200% - triple
300% - 4X
For a 300% increase the KE must be 4 time as large
KE2 / KE1 = M V2^2 / M V1^2 = (V1 / V2)^2 = 4
So V2 = 2 V1 for the requested increase
M V2 / M V1 = V2 / V1 = 2
So the momentum would double for a 100% increase
2. A kg of iron and a kilo of lead, both at 1000 degrees Celsius, are kept on ice. It is discovered after some time that the iron has melted more ice than the lead. Why? 2 A vonal containing un or in kont in on oron The tomis motor an hoot
The specific heat capacity of iron is greater than that of lead hence the iron will melt the ice more than the lead.
What is the specific heat capacity?
The specific heat capacity refers to the amount of heat that is required to raise the temperature of 1Kg of a body by 1 K.
We know that the specific heat capacity of iron is greater than that of lead hence the iron will melt the ice more than the lead.
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Calculate the change in time for each quarter of the
The change
in time for the first quarter is
v
track. Record the change in time in Table C of your
seconds.
Student Guide.
The change in time for the second quarter is
seconds.
The change in time for the third quarter is
seconds.
The change in time for the fourth quarter is
seconds.
Answer:
The change in time for the first quarter is seconds. = 2.07
The change in time for the second quarter is seconds.
=1.09
The change in time for the third quarter is seconds.
=0.95
The change in time for the fourth quarter is seconds.=0.81
Explanation:
Hope this helped.
Which Items are Matter? (Multiple Choice Question)
-Battery
-Electricity
-Mobile Phone
-Sound
-Light
-Heat
which best describes series
Answer:
a single closed path of electrical components including a voltage source
7. Many medicines started out as natural products.Penicillin was originally made from _______________
A. Poppies
B. Bark of the willow tree
C. The flower foxglove.
D. Mold
Answer:
D
Explanation:
PCN was discovered in mold
What is the degree measure of angle bac? round to the nearest whole degree. 19° 20° 70° 71°
The degree measure of angle ∠ bac will be 70°. Option C is correct.
What exactly is an angle?The angle is the distance between the intersecting lines or surfaces. In addition, the angle is expressed in degrees. The angle is 360 degrees for a full revolution.
Given expression;
[tex]\rm cos^{-1}(\frac{3.4}{10})=x \\\\ x = cos^{-1}(0.34) \\\\ x = 70.12^0[/tex]
The degree measure of angle ∠bac will be 70°.
Hence option C is correct.
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Answer:
70 Degrees
Explanation:
Geometry B E2020!! :3
What do velocity, acceleration, force, and displacement, have in common?
Velocity, acceleration, force, and displacement, have magnitude and direction (ie vector quantity) in common
What is a vector quantity?This is a which have both magnitude and direction. Example include:
VelocityDisplacement ForceAccelerationMomentWeightWhat is a scalar quantity?This is a quantity which has magnitude but no direction. Example include:
WorkEnergySpeedMassTimeDistanceFrom the above, we can see that velocity, acceleration, force, and displacement, have magnitude and direction (ie vector quantity) in common
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Explain an example of an object moving in projectile motion.
An example of an object moving in projectile motion is; A basketball being thrown into a net.
What is an example of a Projectile Motion?Projectile motion is the motion of an object thrown or projected into the air, subject to only the acceleration of gravity.
Now, an example of an object moving in a projectile motion is throwing a basketball into a basketball net in a game. This is because the ball is thrown into the air at an angle towards the net and as such is subject to only acceleration of gravity.
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What is the concentration of H+ ions at a pH = 8?
mol/L
What is the concentration of OH– ions at a pH = 8?
mol/L
Taking into account the definition of pH and pOH, the concentration of H⁺ ions at pH=8 is 1×10⁻⁸ M and the concentration of OH⁻ ions at pH=8 is 1×10⁻⁶ M.
Definition of pHpH is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.
The pH is defined as the negative base 10 logarithm of the activity of hydrogen ions, that is, the concentration of hydrogen ions or H₃O⁺:
pH= - log [H⁺]= - log [H₃O⁺]
Definition of pOHSimilarly, pOH is a measure of hydroxyl ions in a solution and is expressed as the logarithm of the concentration of OH⁻ ions, with the sign changed:
pOH= - log [OH⁻]
Relationship between pH and pOHThe following relationship can be established between pH and pOH:
pOH + pH= 14
Concentration of H⁺ ionsIn this case, pH=8. Replacing in the definition of pH:
8= - log [H⁺]
Solving:
[H⁺]= 10⁻⁸= 1×10⁻⁸ M
Finally, the concentration of H⁺ ions at pH=8 is 1×10⁻⁸ M.
Concentration of OH⁻ ionsBeing pH= 8, pOH is calculated as:
pOH + 8= 14
pOH= 14 - 8
pOH= 6
Replacing in the definition of pOH the concentration of OH⁻ ions is obtained:
- log [OH⁻]= 6
Solving
[OH⁻]= 10⁻⁶= 1×10⁻⁶ M
Finally, the concentration of OH⁻ ions at pH=8 is 1×10⁻⁶ M.
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3.Shanai drove 40 miles to the west, then turned around and drove 70 miles to the east.
Draw vectors that show each segment of her trip and the resultant displacement vector. Find
her resultant displacement.
Answer:
Explanation:
Comment
The main points are that
The arrowheads go in opposite directionsDisplacement is measured from the origin to the arrowhead of the last vector correctly drawn.the tail of the second vector starts where the arrowhead of the first vector is.Solution
40 miles west
<========================== 0
=====================================================>
Displacement (30 km east)
Answer
30 km east
If a ball is thrown into the air with a velocity of 45 ft/s, its height in feet after t seconds is given by y=45t-15t2. Find the instantaneous velocity when t=4
Given that a ball is thrown into the air and its height in feet after t seconds is given by y = 45t - 15t², the instantaneous velocity when t=4 is -75ft/s.
What is the instantaneous velocity when t=4?Given that;
Initial velocity = 45ft/sHeight in feet after t seconds is given by y = 45t - 15t² Instantaneous velocity = ?First, we determine the derivative of y = 45t - 15t²
y' = (1)45 - (2)15t
y' = 45 - 30t
We substitute in t = 4
y' = 45 - 30t
y' = 45 - 30(4)
y' = 45 - 120
y' = -75ft/s
Given that a ball is thrown into the air and its height in feet after t seconds is given by y = 45t - 15t², the instantaneous velocity when t=4 is -75ft/s.
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