Calculate the acceleration of a 7,000 kg, single-engine airplane just before takeoff when the thrust of its

What’s the four missing blanks in this diagram?

sergey [27]

Answer:

Matter

Pure substances Mixture

Element compound Homogenous Heterogenous

7 0

4 years ago

If u shine a light of frequency 375Hz on a double slit setup, and u measure the slit separation to be 950nm and the screen dista

xxMikexx [17]

Answer:

Y = 3.39 x 10⁶ m

Explanation:

We will use Young's Double Slit formula here:

$Y = \frac{\lambda L}{d}$

where,

Y = Fringe spacing = ?

λ = wavelength = $\frac{speed\ of\ light}{frequency} = \frac{3\ x\ 10^8\ m/s}{375\ Hz}$ = 8 x 10⁵ m

L = screend distance = 4030 nm = 4.03 x 10⁻⁶ m

d = slit separation = 950 nm = 9.5 x 10⁻⁷ m

Therefore,

$Y = \frac{(8\ x\ 10^5\ m)(4.03\ x\ 10^{-6}\ m)}{9.5\ x\ 10^{-7}\ m}$

6 0

3 years ago

If it takes a ball dropped from rest 2.261 s to fall to the ground, from what height H was it released? Express your answer in m

algol [13]

Answer:

Height, H = 25.04 meters

Explanation:

Initially the ball is at rest, u = 0

Time taken to fall to the ground, t = 2.261 s

Let H is the height from which the ball is released. It can be calculated using the second equation of motion as :

$H=ut+\dfrac{1}{2}at^2$

Here, a = g

$H=\dfrac{1}{2}gt^2$

$H=\dfrac{1}{2}\times 9.8\times (2.261)^2$

H = 25.04 meters

So, the ball is released form a height of 25.04 meters. Hence, this is the required solution.

7 0

3 years ago

PLZ HELP!<br> Which is NOT an example of a longitudinal wave?

LenaWriter [7]

The 1st example is NOT a longitudinal wave

Explanation:

Waves are periodic disturbance of the space that travel carrying energy but not matter.

Depending on their vibration, waves are classified into two types:

Transverse waves: in transverse waves, the vibration of the wave occurs in a direction perpendicular to the direction of propagation of the wave. Examples of transverse waves are electromagnetic waves.
Longitudinal waves: in longitudinal waves, the vibration of the wave occurs in a direction parallel to the direction of propagation of the wave (back and forth), creating regions of higher particle density (compressions) and lower particle density (rarefactions). Examples of longitudinal waves are sound waves.

In this problem we have four options given:

The first picture represents a transverse wave, because the vibration of the robe is up and down, while the wave propagates on the left-right direction
The second picture represents a sound wave, which is a longitudinal wave
The 3rd picture represents a longitudinal wave, since the vibration of the slinky is back and forth along the direction of propagation
The 4th picture also represents a sound wave, which is longitudinal

Therefore, the only wave which is not longitudinal is the one in the 1st picture.

Learn more about waves:

brainly.com/question/5354733

brainly.com/question/9077368

#LearnwithBrainly

7 0

4 years ago

The electromagnetic interaction _______.A. applies only to charges at rest B. applies only to charges in motion C. is responsibl

Bond [772]

Answer:

C. is responsible for sliding friction and contact forces

8 0

4 years ago