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WINSTONCH [101]
3 years ago
7

A sound wave traveling through a solid material has a frequency of 400 hertz. the wavelength of the sound wave is 2 meters. what

is the speed of sound in the material?
a. 200 m/s
b. 200 Hz
c. 800 m/s
d. 800 Hz​​
Physics
1 answer:
Pepsi [2]3 years ago
3 0

Answer:

c. 800m/s

Explanation:

v = f × /\

v = 400 × 2

v = 800m/s

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Answer:

20 mins

Explanation:

To go 90 km it takes =60 mins(1 hr)

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two objects were lifted by a machine. One object had a mass of 2 kilograms, was lifted at a speed of 2m/sec . The other had a ma
Lubov Fominskaja [6]

Object 2 has more kinetic energy

Explanation:

The kinetic energy of an object is the energy possessed by the object due to its motion, and it is given by

K=\frac{1}{2}mv^2

where

m is the mass of the object

v is its speed

In this problem, for object 1:

m = 2 kg

v = 2 m/s

So its kinetic energy is

K_1 = \frac{1}{2}(2)(2)^2=4 J

For object 2,

m = 4 kg

v = 3 m/s

So its kinetic energy is

K_2 = \frac{1}{2}(4)(3)^2=18 J

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Learn more about kinetic energy:

brainly.com/question/6536722

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3 years ago
A bungee cord with a spring constant of 800 StartFraction N over m EndFraction stretches 6 meters at its greatest displacement.
zalisa [80]

Explanation:

EE = ½ kx²

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State of motion is described by
Allisa [31]

Answer:

positions of motion is the answer as moving is a motion

3 0
1 year ago
<img src="https://tex.z-dn.net/?f=%5Cbold%7BWhat%20%5C%3A%20is%20%5C%3A%20the%20%5C%3A%20speed%3F%20%7D" id="TexFormula1" title=
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Refer to the above attachment

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3 years ago
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