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3 years ago

3. What was a constraint (a limitation or a condition) in this version?

1 answer:

7 0

Answer: limitations or constraints in the vision of science is that the hypothesis must be testable and falsifiable.

Explanation:

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A 200N force pushes forward on the 20kg truck. The truck pulls two crates connected together by ropes, as shown. The gravitation

devlian [24]

Force on left crate, right crate and truck we need to draw here

First we will write the equation for left crate

$T_{left} = m*a$

$T_{left} = 20*a$

Now similarly for right crate

$T_{right} - T_{left} = 20*a$

now for truck

$F - T_{right} = 20*a$

Now we know that F = 200 N

$200 - T_{right} = 20*a$

now add all three equation

$T_{left} + T_{right} - T_{left} + 200 - T{right} = 20a + 20 a + 20a$

$200 = 60 a$

$a = 10/3 m/s^2$

now we will find all tension using this value of acceleration

$T_{left} = 20 * \frac{10}{3} = \frac{200}{3} N$

$T_{right} - \frac{200}{3} = 20*\frac{10}{3}$

$T_{right} = \frac{400}{3} N$

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3 years ago

What is transmitted by all waves? energy mass matter sound

disa [49]

Answer: energy

Explanation: A wave is a disturbance that transfers energy as it travels through medium.

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3 years ago

Read 2 more answers

An observer is approaching at stationary source at 17.0 m/s. Assuming the speed of sound is 343 m/s, what is the frequency heard

UNO [17]

Answer:

the frequency heard by the observer is equal to 2677 Hz

Explanation:

given,

velocity of the observer = 17 m/s

speed of the sound = 343 m/s

velocity of the source = 0 m/s

frequency emitted from the source = 2550 Hz

$f = f_0(\dfrac{v-v_0}{v-v_s})$

$f = 2550\times (\dfrac{343+17}{343-0})$

velocity of observer is negative as it is approaching the source. f = 2676.38 Hz ≈ 2677 Hz

hence, the frequency heard by the observer is equal to 2677 Hz

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3 years ago

What is another word for a change in velocity/change in time

inna [77]

Answer:

acceleration

Explanation:

acceleration =velocity final-velocity initial /time

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2 years ago

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A particular lightbulb is designed to consume 40 W when operating on a car's 12-V DC electric power. If you supply that bulb wit

Andrew [12]

40V because it will provide the same amount of power.

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2 years ago

3. What was a constraint (a limitation or a condition) in this version?​

3. What was a constraint (a limitation or a condition) in this version?