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trapecia [35]
3 years ago
11

____ is a pesticide that influenced society by increasing crop yield, but it also caused human and animal sickness.

Physics
1 answer:
Ilya [14]3 years ago
5 0

I think your answer would be DDT, but don't hold me to it

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A sound wave has a speed of 330m/s and a wavelength of 0.372 m. what is the frequency of the wave?
Alja [10]

Answer:

887.1Hz

Explanation:

Given parameters:

Speed of sound wave  = 330m/s

Wavelength  = 0.372m

Unknown:

Frequency  = ?

Solution:

To solve this problem, we use the expression below:

             Speed  = Frequency x wavelength

            330  = Frequency x 0.372

   Frequency  = 887.1Hz

5 0
3 years ago
An airplane starts from rest and reaches a takeoff velocity of 60.0m/s due north in 4.0 s. How far has it traveled before takeof
Blizzard [7]
240 meters that's it
7 0
3 years ago
a spring is stretched 20 cm by a 30.0 n force. determine the work done in stretching the spring from 0 to 40 cm?
Alekssandra [29.7K]

The work done when a spring is stretched from 0 to 40cm is 4J.

What is work done?

Work done is the magnitude of force multiplied by displacement of an object. It is also the amount of energy transferred to an object when work is done on that.

The work done on the spring to stretch to 40cm is,

F = kx

where F is force, k is force constant.

k = F / x = 10 N / 20 * 10^-2 m = 50 N/m

W = 0.5 * k * (x)^2

where W = work done, k = force constant.

W = 0.5 x 50 x (40 x 10^-2)^2 = 4 J.

Therefore, the work done on the spring when it is stretched to 40cm is 4J.

To learn more about work done click on the given link brainly.com/question/25573309

#SPJ4

3 0
1 year ago
If a runner exerts 350 J of work to make 125 W of power, then how long did it take the runner to do the work?
PilotLPTM [1.2K]
225 is the correct answer
5 0
3 years ago
Read 2 more answers
A wave with a frequency of 500 Hz is traveling at a speed of 200m/s. what is the wavelength of this wave?
shtirl [24]

Answer:

0.4 m

Explanation:

5 0
3 years ago
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