3 years ago

In physics what does 7.56 × 5.746 equal ?

Physics

1 answer:

lapo4ka [179]3 years ago

7 0

Answer:

43.43

Explanation:

5.746 x 7.56 = 43.43976

As the least number of desimal is two so our awnser should contain two digits after the decimal point.

Ans: 43.43.

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A vector has the components Ax=−31m and Ay=41m. What is the magnitude of this vector? What angle does this vector make with the

Fudgin [204]

Answer:

Magnitude of vector A is 51.4 m

The angle of vector A with positive x-axis is θ= $127.1^o}$

Explanation:

Given is

$A_{x}$ =-31m

$A_{y\\$ =41m

Let $A_{x}$ and $A_{y\\$ are components of a vector A,

The magnitude of vector A will be:

$A=\sqrt{A_{x}^2 +A_{y}^2}$

= $\sqrt{(-31)^{2} +41^2}$

A = 51.4 m

we know

θ1= $tan^{-1} \frac{A_{y} }{A_{x} }$

= $tan^{-1}(-\frac{41}{31} )$

= $-52.9^{o$

Vector A is present in 2nd quadrant as x-component of vector A is negative and y-component is positive.

For finding the angle of vector with positive x-axis,

θ=180-52.9

θ= $127.1^o}$

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3 years ago