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The magnitude of the vector 3i + 4j is given by the formula |v| = sqrt((3^2) + (4^2)) = sqrt(9 + 16) = sqrt(25) = 5. Therefore, the magnitude of the vector is 5.

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1y ago

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How do you calculate magnitude of acceleration?

α = (Fr sinθ)/m where F is the force acting on the object ..........r is the radius from the 'centre' of the object to the point of application of force. ..........θ is the angle between r and the vector of the force. ..........m is the moment of inertia of the object.


Is direction the course in which an object is moving?

No it isn't. Motion means something moving.Direction has to be established for there to be a change in it. An object that moves forward, stops, and then moves forward again experiences motion without a change in direction. An object that moves forward, stops, and then moves to the right experiences both motion and a change in direction.


Energy needed to move 4 coulombs of charge is 4 joules .the potential difference is how much?

The potential difference is 1 volt. This is because potential difference is given by the formula V = W / Q, where V is the potential difference, W is the work done (energy) moving the charge, and Q is the charge. In this case, V = 4 J / 4 C = 1 V.


Calculate the energy released when a 28.9 gram piece of copper is cooled from its melting point of 1083 àC to 25.0 àC The specific heat of copper is 385 Jg àC?

To calculate the energy released when the copper cools from 1083°C to 25°C, you need to use the formula: Q = mcΔT, where Q is the energy released, m is the mass of the copper, c is the specific heat capacity of copper, and ΔT is the change in temperature. First, find the change in temperature: ΔT = 1083°C - 25°C = 1058°C. Now plug in these values into the formula: Q = 28.9g * 385 J/g°C * 1058°C. Calculate the energy released in Joules.


How much heat must be added to make a 5g substance with a specific heat of 2 JgC that has its temperature go up 10 degrees?

42 j

Related Questions

How do you find the magnitude of a vector?

The magnitude of a vector can be found by taking the square root of each of the vector components squared. For example, if you had the vector 3i+4j, to find the magnitude, you take sqrt ( 3²+4² ) To get: sqrt ( 9+16 ) sqrt ( 25 ) = 5 Works the same in 3D or more, just put all the vector components in.


How do you find the magnitude and the direction of a vector when F3i-4j?

7


What is the magnitude of the resultant of two displacements A and B where A(5i-23)m and B(-3i plus 4j plus 6k)?

To find the magnitude of the resultant displacement (\mathbf{R} = \mathbf{A} + \mathbf{B}), we first add the vectors: [ \mathbf{R} = (5i - 23) + (-3i + 4j + 6k) = (5 - 3)i + 4j + 6k - 23 = 2i + 4j + 6k - 23. ] This simplifies to (\mathbf{R} = 2i + 4j - 17). The magnitude of (\mathbf{R}) is given by: [ |\mathbf{R}| = \sqrt{(2)^2 + (4)^2 + (-17)^2} = \sqrt{4 + 16 + 289} = \sqrt{309} \approx 17.578. ] Thus, the magnitude of the resultant displacement is approximately 17.58 m.


Find the resultant of three forces- F13i-4j 2kF22i 3j-kF32i 4j-5k?

Assuming you mean:F1 = 3i - 4j + 2k,F2 = 2i + 3j - k,F3 = 2i + 4j - 5k.Simply add all of them algebraically, i.e. add i's to i's, j's to j's etc. - this works in all dimensions.The resultant force F will be in your case:F = 7i + 3j - 4k.


-4j-1-4j plus 6?

-4j-1-4j+6 = -8j+5


Vector A plus vector B equals 2i and vectorA-vectorB equals 4j then angle between vectorA and vectorB is?

I've got to assume that your ' i ' and your ' j ' are the same thing.Vector A = j3Vector B = -j1The angle between them is (pi).


What is j equals 20-4j?

If: j = 20-4j Then : j = 4


How do you solve 3y-4j equals 9?

Express one variable in terms of the other. 3Y - 4J = 9 3Y = 4J + 9 Y = (4J + 9)/3 ------------------------ insert back into original equation 3(4J + 9)/3 = 9 you see the 3 factors cancel 4J + 9 = 9 4J = 0 J = 0 -------------you have J 3Y - 4(0) = 9 3Y = 9 Y = 3 ----------------one set of solutions to this problem


What is the value of j in the inequality 4j - 7 greater than 4j - 7?

I think you have entered the inequality wrong. You have: 4j - 7 > 4j - 7 but that is saying that something is greater than itself as both sides of the greater than sign are the same expression.


Whats j j j j in algebra?

4j it would be 'j squared' if it was jxjxjxj


What is the product of j and 4?

4j


How do you calculate magnitude of acceleration?

α = (Fr sinθ)/m where F is the force acting on the object ..........r is the radius from the 'centre' of the object to the point of application of force. ..........θ is the angle between r and the vector of the force. ..........m is the moment of inertia of the object.