answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ronch [10]
2 years ago
8

A water-skier is moving at a speed of 12.0 m/s . When she skis in the same direction as a traveling wave, she springs upward eve

ry 0.600 s because of the wave crests. When she skis in the direction opposite to that in which the wave moves, she springs upward every 0.500 s in response to the crests. The speed of the skier is greater than the speed of the wave. Determine (a) the speed and (b) the wavelength of the wave.
Physics
1 answer:
Kisachek [45]2 years ago
7 0

Answer:

Mechanical waves require a medium to transfer their energy.

What are examples of mechanical waves?

Explanation:

Mechanical waves require a medium to transfer their energy.

What are examples of mechanical waves?

You might be interested in
A common carnival ride, called a gravitron, is a large r = 11 m cylinder in which people stand against the outer wall. the cylin
Leya [2.2K]

Answer:

 v = 13.19 m / s

Explanation:

This problem must be solved using Newton's second law, we create a reference system where the x-axis is perpendicular to the cylinder and the Y-axis is vertical

 

X axis

       N = m a

Centripetal acceleration is

       a = v² / r

Y Axis

      fr -W = 0

      fr = W

The force of friction is

     fr = μ N

Let's calculate

    μ (m v² / r) = mg

   μ v² / r = g

   v² = g r / μ

   v = √ (g r /μ)

   v = √ (9.8 11 / 0.62)

   v = 13.19 m / s

7 0
2 years ago
Traffic officials indicate, it takes longer to ______ when you drive fast.
nignag [31]
The answer in the blank is that it is difficult to accelerate at decelerate the vehicle when it is on a fast speed because having a fast speed makes it difficult to adjust the meter as well as if you try to decelerate the vehicle, it could burn out the tires and engine as it is in the fast speed, in accelerating it, it could also be complicated because it would only make the car faster enough that you may no longer control of how to stop it.
7 0
2 years ago
Read 2 more answers
A certain resistor dissipates 0.5 W when connected to a 3 V potential difference. When connected to a 1 V potential difference,
Stels [109]

Answer:

<h2>0.056 W</h2>

Explanation:

Power = IV

From ohms law we know that

V= IR\\\\I= \frac{V}{R} \\\\Power= \frac{V}{R}*V\\\\Power= \frac{V^2}{R}

Given data

P1 = 0.5 Watt

P2 = ?

V1= 3 Volts

V2= 1 Volt

Thus we can solve for the power dissipated as follows

P1= \frac{V1^2}{R1}\\\\P2= \frac{V2^2}{R2}

\frac{P1}{P2} = \frac{V1^2}{V2^2}\\\\ P2=\frac{ V2^2}{ V1^2} *P1\\\\ P2=\frac{ 1^2}{ 3^2} *0.5= 0.055= 0.056 W

<em>The  resistor will dissipate 0.056 Watt</em>

7 0
2 years ago
A What CE describes the way energy is stored in a sandwich​
SVETLANKA909090 [29]
What is Potential Energy? You probably already know that without eating, your body becomes weak from lack of energy. Take a few bites of a turkey sandwich, and moments later, you feel much better. That's because food molecules contain potential energy, or stored energy, that can do work in the future. Hope it helps
8 0
2 years ago
Which of the following statements is correct? Which of the following statements is correct? The more a muscle shortens, the more
NeX [460]

The correct answer are

a)  "The number of muscle fibers best determines how powerful a muscle will be"

b) "The more a muscle shortens, the more power it generates."

Reason :

Muscle fiber in longitudinal directions generate more power

Multipennate muscles do not produce much power because the tendon branches within muscle .



4 0
2 years ago
Other questions:
  • The drawing shows the top view of a door that is 1.68 m wide. two forces are applied to the door as indicated. what is the magni
    14·1 answer
  • The balls in the image above have different masses and speeds. Rank them in terms of momentum, from least to greatest.
    13·3 answers
  • Arwan finds a piece of quartz while hiking in the mountains. When he returns to school, he takes it to his science teacher. She
    7·2 answers
  • A steel rod with a length of l = 1.55 m and a cross section of A = 4.45 cm2 is held fixed at the end points of the rod. What is
    6·1 answer
  • What is the magnitude of the force needed to hold the outer 2 cm of the blade to the inner portion of the blade?
    14·1 answer
  • A uniform thin circular rubber band of mass M and spring constant k has an original radius R?
    11·1 answer
  • (1 point) Which of the following statements are true?A.The equation Ax=b is referred to as a vector equation.B.If the augmented
    10·1 answer
  • Modern wind turbines generate electricity from wind power. The large, massive blades have a large moment of inertia and carry a
    7·1 answer
  • Modifiable strength improvement factors include all of the following except...??
    12·1 answer
  • A wire of 5.8m long, 2mm diameter carries 750ma current when 22mv potential difference is applied at its ends. if drift speed of
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!