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Let V₁ = -6.5 + 8.1 j and V₂ = -4.5 j + 4.1 î. Determine the magnitude of V₁. Express your answer using two significant figures. |v₁| = | ΑΣΦ xa Xb √x x x x |X| ? X.10n X

An Airplane travels at 951 km/h. how long does it take to travel 1.00 km? (SI units, always) (Make sure there is a space between the number and unit.)

For vectors B = −3î − 7ĵ and A = −5î − 3ĵ, calculate the following. (a) A + B (Express your answer in vector form.) A + B =_______ Enter the magnitude and direction (in degrees counterclockwise from the +x-axis) for A + B. magnitude ______ direction ______ ° counterclockwise from the +x-axis   (b) A − B (Express your answer in vector form.) A − B =________ Enter the magnitude and direction (in degrees counterclockwise from the +x-axis) for A − B. magnitude ________ direction _______° counterclockwise from the +x-axis   (The _______ are where I am supposed to submit answers)

Which of the following equations has units of length? Take [x] = L (length),[m] = kg (mass), [t] = s (time), and [F] = N (Newton). - Is it C or D?

Physical units in mechanics are usually some combination of the dimensions time T, mass M, and length L. Consider the physical quantities m, r, u, a, and t with dimensions [m] = M, [r] = L, [u] = LT-, [a] = LT-2, and [1] = T. Enter the dimensional expression of the quantity on the right-hand side of each equation. Your answers may contain only M, L, T, and exponents. Assume that each of the following equations is dimensionally consistent. Lo = mur [Lo] = W = mar [W] = T

A vector with magnitude 6, points in a direction counterclockwise from the positive x-axis. Write the vector in component form. Give each value accurate to at least 1 decimal place.

A figure skater glides along a circular path of radius 3.93 m. (a) If she coasts around one half of the circle, find the magnitude of the displacement vector. (b) If she coasts around one half of the circle, find what distance she skated. (c) What is the magnitude of the displacement if she skates all the way around the circle?

Consider two vectors A and B, expressed in unit vector notation as A = a1i + a2j and B = b1i + b2j. Enter an expression for the difference vector A - B in terms of quantities shown in the expressions and an expression for the square of the magnitude of the sum vector |A + B| in terms of quantities shown in the expressions.

There are two vectors. Vector A=125x-160y and vector B=-220x+135y(in meters) Find the magnitude and angle (with respect to the positive x axis) of the vector C=A-2B