3 years ago

is the following statement true or false? the light wave from a bulb is an example of a periodic wave.

Physics

1 answer:

777dan777 [17]3 years ago

8 0

Answer:

true

Explanation:

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On a spacecraft, two engines are turned on for 684 s at a moment when the velocity of the craft has x and y components of v0x 43

Natasha2012 [34]

As we know by the kinematics

$\delta x = v_x * t + \frac{1}{2} at^2$

$4.11106 = 4370* 684 + \frac{1}{2}a_x*684^2$

$4.11106 = 2989080 + 233928*a_x$

$a_x = -12.78 m/s^2$

Similarly for Y direction

$\delta y = v_y * t + \frac{1}{2} at^2$

$6.07106 = 6280* 684 + \frac{1}{2}a_y*684^2$

$6.07106 = 4295520 + 233928*a_y$

$a_y = -18.36 m/s^2$

8 0

3 years ago

Read 2 more answers

Which has a larger resistance, a 60 W lightbulb or a 100 W lightbulb? Which has a larger resistance, a 60 W lightbulb or a 100 W

Luba_88 [7]

You really can't tell.

Power = I^2 × R = V^2 / R ( unit in Watt)

For P = I^2 × R

Where we have P directly proportional to R, increase in Power leads to increase in R

So if we have 100 will have higher resistance

For P = V^2/R

Power is inversely proportional to resistance.

So increase in Power leads to decrease in resistance.

60 watt will have a higher resistance.

5 0

3 years ago

Frequency and pitch are (blank) proportional. Therefore, as frequency increases, the perceived pitch (blank) by the same factor.

Alborosie

Answer:

1. Directly

2. Increases

3. Frequency

4. Pitch

8 0

4 years ago

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PLEASE ANSWER NEED HELP!!!!!!!! PLEASE THE CORRECT ANSWER!!!!!!

Lesechka [4]

Answer:

C. unbalanced force

Explanation:

it is called unbalanced force because it has changed direction of the moving object

6 0

3 years ago

A spacecraft has a momentum of 20,000 kg-m/s, and a mass of 250 kg. What is the magnitude of its velocity?

Harlamova29_29 [7]

Answer:

Explanation:

The velocity of the spacecraft can be found by using the formula

$v = \frac{p}{m} \\$

p is the momentum

m is the mass

From the question we have

$v = \frac{20000}{250} = \frac{2000}{25} \\$

We have the final answer as

Hope this helps you

6 0

3 years ago