4 years ago

Which of the following objects is accelerating?

Physics

1 answer:

jenyasd209 [6]4 years ago

4 0

Answer:

Explanation:

Constant speed (without change in direction) is not accelerating. If you are slowing down, speeding up, or changing direction, you are accelerating

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A wave has a frequency of 1000 Hz. If the wavelength is 0.5 m, how fast is the wave<br> traveling?

Soloha48 [4]

Answer: 1000 Hz · 0,5 m = 500 m/s

Explanation: speed = frequency · wavelength

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3 years ago

Identify the type of particle that would be given off by each of the following nuclear reactions:

dsp73

Answer:

c.Beta (1 e-) is the answer.

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3 years ago

A light ray incident from medium 1 to medium 2, where n1>n2. When the incident angle exceed the critical angle ac, the refrac

vovikov84 [41]

Explanation:

(a)

Critical angle is the angle at the angle of refraction is 90°. After the critical angle, no refraction takes place.

Using Snell's law as:

$n_1\times {sin\theta_i}={n_2}\times{sin\theta_r}$

Where,

${\theta_i}$ is the angle of incidence

${\theta_r}$ is the angle of refraction = 90°

${n_2}$ is the refractive index of the refraction medium

${n_1}$ is the refractive index of the incidence medium

Thus,

$n_1\times {sin\ \theta_{critical}}={n_2}\times{sin\ 90^0}$

The formula for the calculation of critical angle is:

${sin\theta_{critical}}=\frac {n_2}{n_1}$

Where,

${\theta_{critical}}$ is the critical angle

(b)

No it cannot occur. It only occur when the light ray bends away from the normal which means that when it travels from denser to rarer medium.

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4 years ago

Help please!!!!!!!!!!!!!!!!!!!!

Pavel [41]

Looks like you need to review through the lesson and take notes as it tells you in the lesson what each of these are.

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4 years ago

If C is the vector sum of A and B, C = A + B, What must be true if C = A + B?. What must be true if C = 0?.

dybincka [34]

A and B are equal vectors

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3 years ago