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brilliants [131]
2 years ago
5

Marc and Linh stretch out a long spring on the classroom floor. Marc holds one end of the spring still. Linh creates waves in th

e spring by moving the other end right and left with a frequency of 2 Hz. If wave crests are 0.5 m apart, what is the speed of the waves?
Physics
1 answer:
Soloha48 [4]2 years ago
7 0

The speed of the wave created by Linh in the spring by moving the other end right and left with a frequency of 2 Hz is 1m/s.

<h3>How to calculate speed of a wave?</h3>

The speed of a wave can be calculated by using the following formula:

Speed = Wavelength x Frequency

According to this question, Linh creates waves in the spring by moving the other end right and left with a frequency of 2 Hz. If wave crests are 0.5 m apart, the speed can be calculated as follows:

speed = 2Hz × 0.5m

speed = 1m/s

Therefore, the speed of the wave created by Linh in the spring by moving the other end right and left with a frequency of 2 Hz is 1m/s.

Learn more about speed at: brainly.com/question/10715783

#SPJ1

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A student says that the two terms speed and frequency of the wave refer to the same thing. What is your response?
rjkz [21]

Answer:

He is wrong!

Explanation:

Frequency refers to how many wave lengths pass in a second and speed is how fast the wave is traveling for example the speed of light goes really fast but has a mid-level frequency.

Hope this helps! ;-)

3 0
2 years ago
How much is the velocity of a body when it travels 600m in 5 minutes?( with the full process)​
Tcecarenko [31]
Its average speed, pretending that it traveled at a constant speed, is

v = s / t

= 600 m

5 x 60 s

= 2 m/s

but to be a velocity it needs a direction as well as a speed.

( Sorry. Can’t find a division line to put between the 600 m and the 5 x 60 s )
6 0
3 years ago
A) About 9.1<br> B) about 14.1<br> C) about 17.2<br> D) about 18.1 <br><br> Please help me
Mnenie [13.5K]

D. 18.1

K^+H^+G^=180° (sum of int angles of triangle)

K^+30+62=180

K^=88°

GH/sinK=KG/sinH

X/sin88=16/sin62

X*sin62/sin62=16*sin88/sin62

X=18.1

8 0
3 years ago
Which wave, A or B, has lower energy? A, because it has a higher amplitude B, because it has a higher amplitude A, because it ha
frutty [35]

Energy of wave depends on its amplitude and it is given as

E = \frac{1}{2} kA^2

here k = constant

A = amplitude

so energy will increase or decrease depends on the amplitude of the wave

So here if we need to check which wave has lower energy then we need to compare the amplitude.

If the amplitude is less then energy must be less

So please check in the figure that which wave out of A and B has lesser amplitude to find out the wave of lesser energy

5 0
3 years ago
Read 2 more answers
The radioactive element strontium-90 has a half-life of 28 years. Suppose we start with a 50-g mass of strontium-90. How much wi
kramer

Answer: 7.71 grams

Explanation:

Half-life of strontium-90 = 28 years

First we have to calculate the rate constant, we use the formula :

k=\frac{0.693}{28\text{years}}

k=0.02475\text{years}^{-1}

Now we have to calculate the age of the sample:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant  = 0.02475\text{years}^{-1}

t = age of sample  = 174 years

a = initial amount of the reactant  = 50 g

a - x = amount left after decay process  = ?

Now put all the given values in above equation, we get

174=\frac{2.303}{0.02475}\log\frac{50}{a-x}

(a-x)=7.71g

Thus amount left after 174 years is 7.71 grams.

7 0
3 years ago
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