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rosijanka [135]
3 years ago
14

Now, consider whether the following statements are true or false:_____________________________________.

Physics
1 answer:
Igoryamba3 years ago
7 0

Answer:

A)F

B)F

C)T

Explanation:

A)

This is not always true that the product of the two vector's always non-negative .It may be positive or negative.

That is why this statement is false.

B)

The unit vectors in three perpendicular direction is i ,j and k.

We know that for unit vectors

i.i=j.j=k.k= 1

i .j= j.k=k.i=0

Therefore only  parallel component of the force will contribute in the integral part instead of perpendicular component of the force.

That is why this statement is false.

C)

This statement is True.

A)F

B)F

C)T

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gizmo_the_mogwai [7]

The formulas used to analyze the horizontal and vertical motion of projectiles launched at an angle involve the use of tangent, cosine and sine.

<h3>What is vertical motion of a projecile?</h3>

The vertical motion of a projectile is affected by gravity and the velocity of vertical motion given by the following formula;

Vy = Vsinθ

<h3>What is horizontal motion of a projecile?</h3>

The horizontal velocity of a projectile is given by the following formula;

Vx = Vcosθ

<h3>Direction of the motion</h3>

The direction of the motion is calculated as follows;

tanθ  = Vy/Vx

Thus, the formulas used to analyze the horizontal and vertical motion of projectiles launched at an angle involve the use of tangent, cosine and sine.

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2 years ago
A large sheet of charge has a uniform charge density of 9  μCm2. What is the electric field due to this charge at a point just
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Answer:

Explanation:

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E = \frac {\sigma }{2\epsilon _{0}}

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When a closed loop of wire experiences a changing magnetic field a voltage and therefore current is produced. This is the basis
MakcuM [25]

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A virtual image is formed 17.0 cm from a concave mirror having a radius of curvature of 39.0 cm. (a) Find the position of the ob
Wittaler [7]

Explanation:

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Radius of curvature of concave mirror, R = 39 cm

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\dfrac{1}{u}=\dfrac{1}{-19.5}-\dfrac{1}{(-17)}  

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(b) Magnification of the  mirror, m=\dfrac{-v}{u}

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m = -0.128

Hence, this is the required solution.

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Answer:

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