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3 years ago

A motor exerts a 280 N force and does 1220 J

Physics

1 answer:

finlep [7]3 years ago

5 0

We know that:

Work = Force × Distance

Solving for Distance:

Distance = Work / Force
Distance = 1220 J / 280 N

<h3> Distance = 4.36 m </h3>

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Who could explain the phenomenom of interference of light?

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Answer:

When the waves reflected from the inner and outer surface combine they will interfere with each other, removing or reinforcing some parts of white light by destructive or constructive interference. ... This results in color.

Explanation:

this is what we studied

so basically there is like a surface

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they will combine and start removing parts of the white light (which originally consists of 6 to 7 colors)

results in showing these colors

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3 years ago

Two identical spheres carry charges of +0.6 coulomb and -0.2 coulomb, respectively. If these spheres touch, the resulting charge

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Answer:

2. +0.2 C

Explanation:

When the two spheres touch, the total charge will be redistributed such that the two spheres are at same potential:

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$\frac{Q_1}{C_1}=\frac{Q_2}{C_2}$

Since the two spheres are identical, they have same capacitance:

$C_1 =C_2=C$

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$\frac{Q_1}{C}=\frac{Q_2}{C}$

$Q_1=Q_2$

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$Q=+0.6 C-0.2 C=+0.4 C$

And this charge will be redistributed equally on the two spheres ( $Q_1 = Q_2$ ), we have

$Q_1 = Q_2 = \frac{Q}{2}=\frac{+0.4 C}{2}=+0.2 C$

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4 years ago

Using two spring scales, students pull on opposite sides of a dynamic cart at rest. 7 Newtons of force is pulling left and 5 New

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Answer:

The cart will accelerate to the left

Explanation:

The cart is initially at rest. In order to understand its motion, we should consider the net force acting on the cart. We have two forces acting on it:

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- A force of 5 N to the right

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in the direction of the stronger force (so, to the left).

According to Newton's second law:

$F=ma$

a net force different from zero produces an acceleration of the object, in the same direction as the net force. Therefore, the cart will accelerate to the left.

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3 years ago

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sattari [20]

Answer:

Visible light

X rays

ultraviolet radiation

gamma rays

microwave radiation

Explanation:

Electromagnetic waves consist of oscillating electric and magnetic fields which vibrate in a direction perpendicular to the direction of motion of the wave (transverse wave). Electromagnetic waves have all same speed in a vacuum ( $c=3.0\cdot 10^8 m/s$ , known as speed of light) and are classified into 7 different types according to their frequency and wavelength. This classification is called electromagnetic spectrum.

From lowest to highest wavelength, the 7 types are:

Gamma rays

X-rays

Ultraviolet radiation

Visible light

Infrared radiation

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3 years ago

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Answer:

Explanation:

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