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3 years ago

Givereasons for the following.

Physics

1 answer:

Scrat [10]3 years ago

3 0

a. Pascal is a derived unit because it is depend upon fundamental unit like as Kg, Meter, and Sec.

b. Mass is a fundamental quantity because it is independent with other.

c. Unit of power is a derived unit because it is depend upon fundamental unit like as Kg, Meter, and Sec.

d. Unit of length is a fundamental quantity because it is independent with other.

I hope you understand...

Thanks♥♥

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You plug your microwave into an outlet and then you heat up a piece of pizza in it. This is an example of an...

dem82 [27]

Answer:

Explanation:

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2 years ago

A vector is a quantity that has what two items

alexandr1967 [171]

A vector has a size and a direction. The size is called the magnitude of the vector.

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3 years ago

Two motorcyclists are riding side-by-side at night and the distance between their center-mounted headlights is 1.40 m. (a) If th

dezoksy [38]

Answer:

θ = 1.591 10⁻² rad

Explanation:

For this exercise we must suppose a criterion when two light sources are considered separated, we use the most common criterion the Rayleigh criterion that establishes that two light sources are separated census the central maximum of one of them coincides with the first minimum of the other source

Let's write the diffraction equation for a slit

a sin θ = m λ

The first minimum occurs for m = 1, also field in these we experience the angles are very small, we can approximate the sin θ = θ

θ = λ / a

In our case, the pupil is circular, so the system must be solved in polar coordinates, so a numerical constant is introduced.

θ = 1.22 λ / D

Where D is the diameter of the pupil

Let's apply this equation to our case

θ = 1.22 600 10⁻⁹ / 0.460 10⁻²

θ = 1.591 10⁻² rad

This is the angle separation to solve the two light sources

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3 years ago

a wave travels at a speed of 793 m/s and has a wavelength of 2.3 meters. calculate the frequency of the wave

Savatey [412]

Answer:

344.8 Hz

Explanation:

The frequency of a wave is given by:

$f=\frac{v}{\lambda}$

where

v is the speed of the wave

$\lambda$ is its wavelength

Here we have

v = 793 m/s

$\lambda=2.3 m$

Substituting into the equation, we find

$f=\frac{793 m/s}{2.3 m}=344.8 Hz$

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2 years ago

Two ice skaters, Paula and Ricardo, initially at rest, push off from each other. Ricardo weighs more than Paula.

sveta [45]

Answer:

the two ice skater have the same momentum but the are in different directions.

Paula will have a greater speed than Ricardo after the push-off.

Explanation:

Given that:

Two ice skaters, Paula and Ricardo, initially at rest, push off from each other. Ricardo weighs more than Paula.

A. Which skater, if either, has the greater momentum after the push-off? Explain.

The law of conservation of can be applied here in order to determine the skater that possess a greater momentum after the push -off

The law of conservation of momentum states that the total momentum of two or more objects acting upon one another will not change, provided there are no external forces acting on them.

So if two objects in motion collide, their total momentum before the collision will be the same as the total momentum after the collision.

Momentum is the product of mass and velocity.

SO, from the information given:

Let represent the mass of Paula with $m_{Pa}$ and its initial velocity with $u_{Pa}$