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3 years ago

How would a small bar magnet be oriented when placed at position X

Physics

2 answers:

kotykmax [81]3 years ago

6 0

Answer:

Explanation:

Well opposites attract, don't they?

Alex Ar [27]3 years ago

4 0

The answer is right here

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- In Einstein's famous equation E = me?, describing the

mel-nik [20]

Answer:

option C is correct

Explanation:

8 0

3 years ago

Two balloons are charged with an identical quantity and type of charge: -6.25 x 10-6 C. They are held apart at a separation dist

steposvetlana [31]

Answer:

The electric force between them is 878.9 N

Explanation:

Given:

Identical charge $q = -6.25 \times 10^{-6}$ C

Separation between two charges $r = 0.02$ m

For finding the electrical force,

According to the coulomb's law

$F = \frac{k q^{2} }{r^{2} }$

Here, force between two balloons are repulsive because both charges are same.

Where $k = 9 \times 10^{9}$

$F = \frac{9 \times 10^{9} \times (-6.25 \times 10^{-6} )^{2} }{4 \times 10^{-4} }$

$F = 878.9$ N

Therefore, the electric force between them is 878.9 N

8 0

3 years ago

A ball is kicked from level ground at an angle 60° with initial velocity 10 m/s. The distance the ball travels, in meters, is:

RUDIKE [14]

Answer:

the ball travels a distance of 8.84 m

Explanation:

Range: Range is defined as the horizontal distance from the point of projection to the point where the projectile hits the projection plane again.

R = (U²sin2∅)/g.............................. Equation 1

Where R = range, U = initial velocity, ∅ = angle of projection, g = acceleration due to gravity.

Given: U = 10 m/s, ∅ = 60°

Constant: g = 9.8 m/s²

Substituting these values into equation 1

R = [10²×sin(2×60)]/9.8

R = (100sin120)/9.8

R = 100×0.8660/9.8

R = 86.60/9.8

R = 8.84 m

Therefore the ball travels a distance of 8.84 m

4 0

3 years ago

Chemical bonds form when atoms A.) gain protons. B.) combine nuclei C.) give up neutrons. D.) share or transfer electrons

frutty [35]

The correct answer is (D)

8 0

3 years ago

A wheel rotates about a fixed axis with an initial angular velocity of 24 rad/s. During a 4 s interval the angular velocity decr

netineya [11]

Answer:

$\theta=76\ rad$

Explanation:

Hoven that,

Initial angular velocity of the wheel = 24 rad/s

Final angular velocity = 14 m/s

Time, t = 4 s

We need to find how many radians does the wheel turn through during the 4 s interval. Let the displacement is $\theta$ . Using second equation of rotational kinematics to find it such that,

$\theta=\omega_i t+\dfrac{1}{2}\alpha t^2$

Where

$\alpha$ is angular acceleration

$\alpha =\dfrac{\omega_f-\omega_i}{t}\\\\\alpha =\dfrac{14-24}{4}\\\\\alpha =-2.5\ rad/s^2$

So,

$\theta=24\times 4+\dfrac{1}{2}\times (-2.5)\times 4^2\\\\\theta=76\ rad$

So, it will turn 76 radian during the 4 s interval.

7 0

3 years ago

How would a small bar magnet be oriented when placed at position X​

How would a small bar magnet be oriented when placed at position X