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3 years ago

Explain a situation in which you can accelerate even thought your speed doesn’t change

Physics

1 answer:

Juli2301 [7.4K]3 years ago

7 0

Explanation:

An object's acceleration is the rate its velocity (speed and direction) changes. Therefore, an object can accelerate even if its speed is constant - if its direction changes. ... Light's acceleration is zero. Since it travels in a straight line, its direction does not change.

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A museum sets up a display of fluorescent minerals. which best describes how electromagnetic waves can be used to enhance the di

IRISSAK [1]

Answer:

ultraviolet light shining on the minerals will cause them to give off visible light.

Explanation:

Here we know that in all electromagnetic waves have certain range of energy

Here in the above case when a given frequency range of electromagnetic wave incident on the fluorescent mineral then that mineral will absorb few amount of energy and the remaining energy will throw back into the surrounding again.

So here the main concept is that when a electromagnetic wave which is higher in energy then visible light incident on fluorescent material then it will absorb some amount of energy and the remaining energy is released in form of light

So here energy more than visible light is for ultraviolet light only

so here the correct answer would be

ultraviolet light shining on the minerals will cause them to give off visible light.

3 0

3 years ago

Read 2 more answers

A small sphere with mass 5.00×10−7 kg and charge +8.00 μC is released from rest a distance of 0.500 m above a large horizontal i

Damm [24]

<span>Work done on charge is W = Eqd = σ/(2ε₀) x q x d = {(8.00 x 10⁻¹²)/(2 x 8.854187 x 10⁻¹²)} x 3.00 x 10⁻⁶ x (0.650 - 0.250) = 5.42116402J. KE of sphere = 0.5mv² = 0.5 x 5.00 x 10⁻⁷v² = work done by E-field on charge during its fall = 5.42116402→ v = 4657 m/s.</span>

6 0

3 years ago

What is the acceleration if a 5 kg cart is pushed with 30 N of force?

sp2606 [1]

Answer:

Explanation:

The acceleration of an object given it's mass and the force acting on it can be found by using the formula

$a = \frac{f}{m} \\$

f is the force

m is the mass

From the question we have

$a = \frac{30}{5} \\$

We have the final answer as

Hope this helps you

3 0

3 years ago

What is the gravitational force between two identical 5000 kg asteroids whose centers of mass are separated by 100 m?

Alenkinab [10]

Answer: 1.67 x 10^-7N

Explanation:

5 0

3 years ago

Un diapasón vibra a 140 [Hz] y la onda emitida por él se propaga con una rapidez de 340 m/s.Considerando lo anterior, se puede a

Gnom [1K]

The question is: A tuning fork vibrates at 140 [Hz] and the wave emitted by it propagates with a speed of 340 m / s. Considering the above, it can be correctly stated that the wavelength of the wave emitted by the tuning fork is

Answer: Wavelength of the wave emitted by the tuning fork is 2.43 m.

Explanation:

Given: Frequency = 140 Hz

Speed = 340 m/s

wavelength = ?

Formula used to calculate the wavelength is as follows.

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

where,

$\lambda$ = wavelength

v = speed

f = frequency

Substitute the values into above formula.

$\lambda = \frac{v}{f}\\= \frac{340 m/s}{140 Hz} (1 Hz = 1 s^{-1})\\= 2.43 m$

Thus, we can conclude that wavelength of the wave emitted by the tuning fork is 2.43 m.

5 0

3 years ago