A coil of wire has 400 turns, each of area 50 cm2. What B-field is required if a 4.5 A current produces a maximum 3.5 N . m torque? A. 0.97 mT B. 0.39 T C. 1.54 T D. 156 T

Q: Glancing at the speedometer of your car gives you your car's instantaneous speed your car's instanta...

A: Answer:your car's instantaneous speed. Our car's speedometer measures the speed of a car at an insta...

Q: A ferryboat which can sail at the rate of 8mph in still water travels straight across a river 1⁄2 m...

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Q: Find the equivalent capacitance of the group of capacitors shown in the figure below. (Let c, = 4.90...

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Q: A rubber stopper on the end of a string is swung steadily in a horizontal circle. In one trial, it m...

A: Given, Speed in the first trial =v Radius of circle in first trial = r Speed in the second trial = 3...

Q: Apply Newton's second law to show that the rate of falling under the action of gravity is same for a...

A: Let the mass of the body be m and the body is released freely (initial velocity u = 0 m/s) under gra...

Q: A woman pushes her sled across even snow surface to get it going, then jumps in. The sled then gradu...

A: The correct option as per the above condition that is provided in form of statement in the question ...

Q: Three charges are placed on three corners of a square, as shown in the figure. Each side of the squa...

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Q: Radiation technology in industry is used to coat wood.  The rays used for coating wood are .... a. ...

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Q: The apparent V magnitude of Sirius is -1.44. What is its distance in parsecs? Use your estimate of i...

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Q: Learning Goal: To understand the meaning and the basic applications of Newton's 1st and 2nd laws. ...

A: Newton's First Law. Law of inertia A body will always try to maintain its state of mechanical moveme...

Q: (a) How much charge can be placed on a capacitor with air between the plates before it breaks down i...

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Q: component methods of vector addition, how far from the well and in what direction is the hidden trea...

A: Analytical (Component) Method assuming +x is in E direction and +y is in N direction.

Q: In what part of the frequency spectra would expect to find the minimum noise from the atmosphere and...

A: The solar spectra has a 1/f noise pattern.

Q: 5. A stone is dropped from the top s. How high is the cliff?

A: 5. Given, Initial speed , u = 0 m/s Time ,t = 3.55 s From kinematics equation , height = ut+12gt2 , ...

Q: e you going to measure the volume of an irregular small shape objects such as pebbles? Explain in de...

A: Archimedes Principle:-  "The weight of the fluids that the body displaces is equivalent to the upwar...

Q: Saturn's moon Titan is observed to orbit with a period = 15.945 days and at a %3D distance = 1,221,8...

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Q: 5. s= 2 sin 3t cos 3t 6. 8 = 3 sin(2t + 7/8) +3 sin(2t 7/8)

A: According to question we need to find Amplitude  of wave .

Q: Part (b) What is the car's displacement in the x-direction Ax, in meters, during this period? Part (...

A: Vi = 0m/s  Vf= -30 m/s  t = 174 sec  d = 989m 

Q: 4. Three charges are placed on three corners of a square, as shown in the figure. Each side of the s...

A: Here a figure is given, showing three charges placed at the corners of a square. We have to find the...

Q: A car is initially moving in the +x direction at 14.0 m/s. The car makes a turn so that 3.00 seconds...

A: u = 14i m/s , v= 18j m/s  t= 3s   

Q: The electric field midway between two equal but opposite point charges is 236 N/C , and the distance...

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Q: 5. Calculate the average speed of a 4.0 x 102-newton weight being lifted vertically by a 2.00 x 10-w...

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Q: 4. Which of these objects is in static equilibrium? A. С. В. D.

A: Vector is  represented as line segment with an arrow head   

Q: A bullet hits a target 2 cm below its aiming point f the gun is 30 m away from the target, what is

A: horizontal distance = R = 30 m vertical distance = y = 2 cm = 0.02 m

Q: If the power rating of a computer is 600W and the computer is plugged into a mains supply (230V), ca...

A: Given that:- Power rating of computer=600W Voltage supply=V=230Volt

Q: Two point charges are located on the +x-axis of the Cartesian plane. Charge q1 = 1.00 nC is 2.0cm fr...

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Q: 1. Which combination of units can be used to express work? (1) newton · second/meter (2) newton • me...

A: 1)To find the combination of units that can be used to express work   

Q: 5. Work is being done when a force (1) acts vertically on a cart that can only move horizontally (2)...

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Q: A vector d has a magnitude 2.5 m and points north. What are the magnitudes and directions of the vec...

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Q: Rex Things throws his mother's crystal vase vertically upwards with a mass of 50.7 kg, compute for t...

A: Given: Mass of the vase, m = 50.7 kg Drag coefficient, cd = 20.5 kg/s

Q: technology

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Q: A heart defibrillator being used on a patient has an RC time constant of 9.5 ms due to the resistanc...

A: time constant = 9.5 ms C = 6.5 μF V = 11.5 kV   

Q: 3. If it takes 2 seconds to raise an 8 kg block a vertica height of 1 m, what is the power expended?

A: Given: The mass of the object is 8 kg. The vertical height of the object is 1 m. The time interval i...

Q: A 2-lb object, that stretches a spring by 1.5 inches, is released with a downward velocity of 32 ft/...

A: Since object is 1ft above the equilibrium point  So, initial displacement of object  X(0) = 1ft 

Q: Blood sugar levels are measured in milligrams of glucose per dicilitre of blood volume. If a person'...

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Q: If 48 eV of energy is required to move a charge through a potential difference of 3.2 V, deter-mine ...

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Q: A charge Q is transferred from an initially uncharged plastic ball to an identical ball 42 cm away. ...

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Q: A circular pipe of OD 20 cm is enclosed centrally in a square section insulation of 36 cm side. The ...

A: Given-Outer Diameter= 20cm or 0.2mSide of square section=36cm or 0.36mThermal Conductivity (K) =8.5W...

Q: A ball is thrown with an initial horizontal velocity of 30 m/s from a height of 3m above the ground ...

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Q: The flux received at the Earth from Supernova 1885 was 3.0182 x 10 10 W/m?. The luminosity of the su...

A: flux (I) = 3.0182×10-10 Wm2luminosity = 6×109 solar luminosities  

Q: 2) In Figure 2. determine the position in space for which the total electric field due to the two ch...

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Q: A uniform volume charge density of 0.2 µC/m is present throughout the spherical shell extending from...

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Q: Jsing the circle (radius = r =2 cm) and ellipse (long axis = 3 cm, short axis = 1.5 cm) of Figure 12...

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Q: In uniform circular motion, the net force is perpendicular to the velocity and changes the direction...

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Q: 1. A charge is located at the origin with a charge of q1 = -8 microC. Consider two other charge - 4 ...

A: q1 = -8μC at (0,0) cmq2 = -4μC at (0,5) cmq3 = -4μC at (5,0) cm  

Q: A meter stick is found to balance at the 49.7-cm mark when placed on a fulcrum. When a 58.0-gram mas...

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Q: Three forces acting on the table as shown in the figure below. What is the magnitude and direction o...

A: F1= 50 lbs F2= 100 lbs, 300 resultant force = F = 150 lbs (down ward )

Q: Two point charges Q, = +4.80 nC and Q, = -2.40 nC are separated by 25.0 cm. (a) What is the electric...

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Q: The heating coil of a hot water heater has a resistance of 20 ohms and operates at 210 V. If electri...

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Q: Please solve min 3-4 parts , if not all The charges q1, q2, q3, and q4 lie at the corner points of ...

A:  Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and ...

Magnetic Force

A magnetic force arises when a charged particle or a current-carrying conductor is placed in a magnetic field. It is created because of the movement of the charged particles.