1answer.
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
Luba_88 [7]
3 years ago
10

A wave with a fequency of 12 hz has a wavelength of 1.5 meter. at what speed will this wave travel?

Physics
1 answer:
avanturin [10]3 years ago
5 0
V used to denote speed of the wave

Is determined by the product of the wave’s frequency and wavelength.

The number of times a wave oscillates or repeats again and again multiplied by the distance.

V = 12 • 1.5 = 12 • 3/2 = 18 m/s

The speed of the wave is 18 m/s.
You might be interested in
The potential difference between two points is 100 V. If a particle with a charge of 2 C is transported from one of these points
Aleonysh [2.5K]

Answer: 200 J

Explanation: In order to explain this we have consider that the work done in a electric field is given by:

Work= Q*ΔV=2*100=200J

4 0
3 years ago
Read 2 more answers
A test of the prototype of a new automobile shows that the minimum distance for a controlled stop from 95 km/h to zero is 55 m.
iris [78.8K]

Answer:

-0.64525g

Explanation:

t = Time taken for the car to stop

u = Initial velocity = 95 km/h

v = Final velocity = 0 km/h

s = Displacement

a = Acceleration

Equation of motion

v^2-u^2=2as\\\Rightarrow a=\frac{v^2-u^2}{2s}\\\Rightarrow a=\frac{0^2-95^2}{2\times 0.055}\\\Rightarrow a=-82045.45\ km/h^2

Converting to m/s²

a=82045.45=\frac{82045.45\times 1000}{3600\times 3600}=-6.33\ m/s^2

g = Acceleration due to gravity = 9.81 m/s²

Dividing both the accelerations, we get

\frac{a}{g}=\frac{-6.33}{9.81}=-0.64525\\\Rightarrow a=-0.64525g

Hence, acceleration of the car is -0.64525g

8 0
3 years ago
Based on the law of conservation of energy, which statement is false?
alexgriva [62]

I think it’s Energy is lost when machines don’t work right.

8 0
3 years ago
Argon gas enters steadily an adiabatic turbine at 900 kPa and 450C with a velocity of 80 m/s and leaves at 150 kPa with a veloc
Crazy boy [7]

Answer:

Temperature at the exit = 267.3 C

Explanation:

For the steady energy flow through a control volume, the power output is given as

W_{out}= -m_{f}(h_{2}-h_{1} + \frac{v_{2}^{2}}{2} - \frac{v_{1}^{2}}{2})

Inlet area of the turbine = 60cm^{2}= 0.006m^{2}

To find the mass flow rate, we can apply the ideal gas laws to estimate the specific volume, from there we can get the mass flow rate.

Assuming Argon behaves as an Ideal gas, we have the specific volume v_{1}

as

v_{1}=\frac{RT_{1}}{P_{1}}=\frac{0.2081\times723}{900}=0.1672m^{3}/kg

m_{f}=\frac{1}{v_{1}}\times A_{1}V_{1} = \frac{1}{0.1672}\times(0.006)(80)=2.871kg/sec

for Ideal gasses, the enthalpy change can be calculated using the formula

h_{2}-h_{1}=C_{p}(T_{2}-T_{1})

hence we have

W_{out}= -m_{f}((C_{p}(T_{2}-T_{1}) + \frac{v_{2}^{2}}{2} - \frac{v_{1}^{2}}{2})

250= -2.871((0.5203(T_{2}-450) + \frac{150^{2}}{2\times 1000} - \frac{80^{2}}{2\times 1000})

<em>Note: to convert the Kinetic energy term to kilojoules, it was multiplied by 1000</em>

evaluating the above equation, we have T_{2}=267.3C

Hence, the temperature at the exit = 267.3 C

5 0
3 years ago
Pourquoi doit on toujours préciser le référentiel dans le quel est étudié le mouvement d'un système?
Vedmedyk [2.9K]

Answer:

The movement of an object depends on the reference frame, so it is important to predicate it.

Explanation:

4 0
2 years ago
Other questions:
  • A 49 kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is above the bar is 0.7 m/s. The acceleration of
    7·1 answer
  • True or False? Gases such as water vapor condense when they are *heated*.
    7·1 answer
  • You’ll get 100 points for answering this quick question
    15·2 answers
  • A ball is thrown straight up. It passes a 2.00-m-high window 7.50 m off the ground on its path up and takes 1.30 s to go past th
    14·1 answer
  • What happens when a star exhausts its core hydrogen supply?
    11·1 answer
  • Find the force, in N that does 0.0284 kilojoules of work in moving a book a distance of 4.00 meters
    6·1 answer
  • A Force has a size and a(n)?
    10·2 answers
  • A. With what speed must a ball be thrown vertically from ground level to rise to a maximum height of 45m?
    14·1 answer
  • Which of the following is not a longitudinal
    8·2 answers
  • All satellite eventually lose their orbital energy and plummet to earth because of______.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!