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k0ka [10]
3 years ago
10

Which of the following is NOT true about energy conversion devices?

Physics
1 answer:
konstantin123 [22]3 years ago
5 0

Answer:

D

Explanation:

Option A, B and C are true about energy conversion devices, only option D is NOT true about energy conversion devices.

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What is the acceleration at 3 seconds?<br><br> Please explain your answer. Thank you :]
statuscvo [17]

Answer:

-3 m/s^{2}

Explanation:

Acceleration on a VT graph is the slope of the line at the given point. We can find the slope at 3 with Δy/Δx. This gives us (4-2)/(3-(-3)) which works out to be -3m/s^2

8 0
2 years ago
A+B A=3i+4j-k B=5i+6j+2k​
OlgaM077 [116]

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7 0
1 year ago
In the design of a supermarket, there are to be several ramps connecting different parts of the store. Customers will have to pu
tatuchka [14]

Answer:

3.90 degrees

Explanation:

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W = mg = 30*9.81 = 294.3 N

This gravity is split into 2 components on the ramp, 1 parallel and the other perpendicular to the ramp.

We can calculate the parallel one since it's the one that affects the force required to push up

F = WsinΘ

Since customer would not complain if the force is no more than 20N

F = 20

294.3sin\theta = 20

sin\theta = 20/294.3 = 0.068

\theta = sin^{-1}0.068 = 0.068 rad = 0.068*180/\pi \approx 3.90^0

So the ramp cannot be larger than 3.9 degrees

6 0
3 years ago
Why is there no effect on other branches in a paral- lel circuit when one branch of the circuit is opened or closed?
motikmotik

Answer:

Explanation:

As the circuit is parallel, then there is no effect of other branches as the potential difference across each arm is same.

6 0
3 years ago
How do we know the sun rotates?
Eduardwww [97]
Hi pupil Here's your answer ::::


➡➡➡➡➡➡➡➡➡➡➡➡➡

The sun Doesnt rotates as we know all . But it rotates with the wjole our Milky Way Galaxy. This movement is so slow that we cant even recognise that we are shifted.

This we know because we all had studied about the solar system and space.

By this study we can say that Sun Rotates.


⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅⬅



Hope this helps ......
6 0
2 years ago
Read 2 more answers
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