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Yuri [45]
3 years ago
9

If we find v=Al, where l is a length and v is a speed, what are the SI units for A?

Physics
2 answers:
12345 [234]3 years ago
8 0

Answer:

A) S^-1

Explanation:

Hope I helped

If there is any thing feel free to ask

You are welcome in advance

swat323 years ago
3 0

Answer:

I think the SI unit of A is m^2/s

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A student pulls a block across the desk in physics class. He applies 14N of
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3 years ago
A special system is set up in a lab that lets its user select any wavelength between 400nm and 700 nm with constant intensity. T
e-lub [12.9K]

Answer:

Explanation:

The case relates to interference in thin films , in which we study interference of light waves reflected by upper and lower surface of a medium or glass.

For constructive interference , the condition is

2μt = ( 2n+1)λ/2

μ is refractive index of glass , t is thickness , λ is wavelength of light.

putting the given values

2 x 1.53 x 350 x 10⁻⁹ = ( 2n+1) λ/2

λ = 2142nm /  ( 2n+1)

For n = 2

λ = 428 nm

This wave length will have constructive interference making this light brightest of all .

For n = 1

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3 0
3 years ago
The direction of deflection of an electron beam in a magnetic field can be determined by which of the following?
amid [387]

Answer:

Right Hand Rule

Explanation:

When a charged particle travels in a magnetic field, it experiences a force whose magnitude is given by:

F=qvBsin\theta

where

q is the charge of the particle

v is the velocity

B is the magnetic field strength

\theta is the angle between the directions of v and B

The direction of the force can be determined by using the Right Hand Rule, as follows:

- index finger: this should be put in the direction of the velocity

- middle finger: this should be put in the direction of the magnetic field

- thumb: this will give the direction of the force -> however, for a negative charge (as the electron) the direction must be reversed, so it will be opposite.

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3 years ago
A good way to decrease the strength of a magnet is to what?
natulia [17]
-- drop it on the floor; -- hit it with a hammer; -- heat it red hot in a flame; -- wrap many turns of wire around it and pass a high AC current through the wire.
6 0
3 years ago
Suppose a treadmill has an average acceleration of .0050 m/s2. How much does it's speed changer after 4.8 minutes?
avanturin [10]
This one is nice and straight forward :)

simply calculate how many seconds are in 4.8 minutes like this:
4.8min x 60s = 288s

Then to find the ∆v (∆v = symbol for change in velocity) multiply the acceleration 0.0050m/s^2 by 288s
∆v = 1.44m/s



0.0050m/sx^{2}




3 0
4 years ago
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