All categories

3 years ago

Which three statements describe mechanical waves?

Physics

2 answers:

Yuliya22 [10]3 years ago

8 0

Answer: b,c,d

Explanation:

koban [17]3 years ago

7 0

Answer:

The answers are B, C, and D.

Explanation:

I took AP EX quiz

You might be interested in

If the<br> refractive index of benzere is 2.419,<br> what is the speed of light in benzene?

Grace [21]

Answer:

$v=1.24\times 10^8\ m/s$

Explanation:

Given that,

The refractive index of benzene is 2.419

We need to find the speed of light in benzene. The ratio of speed of light in vacuum to the speed of light in the medium equals the refractive index. So,

$n=\dfrac{c}{v}\\\\v=\dfrac{c}{n}\\\\v=\dfrac{3\times 10^8}{2.419}\\\\v=1.24\times 10^8\ m/s$

So, the speed of light in bezene is $1.24\times 10^8\ m/s$ .

4 0

3 years ago

A geyser shoots water straight up into the air with a velocity of 28.0 m/s. how

Fed [463]

The maximum height reached by the water before it starts coming back down is 40 m.

<h3>Maximum height reached by the water</h3>

The maximum height reached by the water before it starts coming back down is calculated by applying the principle of conservation of energy.

P.E = K.E

mgh = ¹/₂mv²

gh = ¹/₂v²

h = (v²)/(2g)

h = (28²)/(2 x 9.8)

h = 40 m

Learn more about maximum height here: brainly.com/question/12446886

#SPJ1

3 0

2 years ago

7. A car is travelling along a road at 30 ms when a pedestrian steps into the road 55 m ahead. The

trasher [3.6K]

Answer: Car collide with man

Explanation:

Given

Speed of car is $u=30\ m/s$

Distance of the man from the car is $s=55\ m$

Reaction time $t_r=0.5\ s$

Rate of deceleration $a_d=-10\ m/s^2$

Distance traveled in the reaction time $d_o=30\times 0.5=15\ m$

Net effective distance to cover $d=55-15=40\ m$

Distance required to stop the car

$\Rightarrow v^2-30^2=2(-10)(s)\\\Rightarrow 0-900=-20s\\\Rightarrow s=45\ m$

Require distance is more than that of net effective distance. Hence, car collides with the man.

6 0

3 years ago

Ionic solutes are considered strong electrolytes. What does this mean for the conductivity of the solution?

kondaur [170]

Ionic solutes are considered strong electrolytes. What does this mean for the conductivity of the solution?

A) Strong electrolytes dissolve and completely dissociate in water providing charged ions to conduct electricity.

B) Strong electrolytes dissolve and do not dissociate in water providing no charged ions to conduct electricity.

C) Being a strong electrolyte refers the type of bonding and has no bearing on conducting electricity.

D) Strong electrolytes do not dissolve in water and can not conduct electricity.

ANSWER:

A) Strong electrolytes dissolve and completely dissociate in water providing charged ions to conduct electricity.

8 0

4 years ago

Read 2 more answers

vehicles equipped with disc brakes incorporate a mechanically operated drum-style parking brake in the center of the rear disc b

umka21 [38]

Vehicles equipped with disc brakes incorporate a mechanically operated drum-style parking brake in the center of the rear disc brake rotors, commonly called a top hat parking brake.

<h3>What is top hat parking brake?</h3>

The top hat drum style of parking brake system is called the top hat rotors because of how big the middle part is compared to regular rotors.

In this type of parking brake system, the vehicle is equipped with disc brakes which incorporate a mechanically operated drum-style parking brake in the center of the rear disc brake rotors.

Thus, vehicles equipped with disc brakes incorporate a mechanically operated drum-style parking brake in the center of the rear disc brake rotors, commonly called a top hat parking brake.

Learn more about top hat parking brake here: brainly.com/question/21854030

4 0

2 years ago