3 years ago

True or False: Tests given in school have little relation to choosing a job

2 answers:

6 0

False... normally the tests given in school are evolved around the job you're going to pick ( If you're in high school or college )

I guess it depends on which grade you're talking about.

TiliK225 [7]3 years ago

5 0

True because school doesn't dictate what job you want in the future

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Which of the following materials offer the least electrical resistance? Pure water, wood, salt water, glass

Vanyuwa [196]

Salt water offers the least electrical resistance.

Explanation:

Least electrical resistance indicates that any material which readily allows the electric current through itself, and shows more conductivity.

Here pure water doesn't contain any ions, so it is a bad conductor.

Wood and glass are also bad conductors of electricity.

Salt water contains ions, which conducts electricity which means it shows least electrical resistance.

5 0

3 years ago

Derive the formula v= u+ at please derive in detail

gogolik [260]

Lets do

We know

The rate of change of velocity is acceleration .

$\\ \sf\longmapsto a=\dfrac{dv}{dt}$

$\\ \sf\longmapsto dv=adt$

Integrate both sides

$\\ \sf\longmapsto \int dv=a\int dt$

As acceleration is constant .Take it outside of integral .On velocity we can take limit u to v and time from 0 to t

$\\ \sf\longmapsto {\displaystyle{\int}}^v_u dv=a{\displaystyle{\int}}^t_0 dt$

Hence

$\\ \sf\longmapsto v{\huge{|}}^v_u=at$

$\\ \sf\longmapsto v-u=at$

$\\ \sf\longmapsto v=u+at$

4 0

3 years ago

Read 2 more answers

Please help with part b. I need to find the speed.

Elena-2011 [213]

It would be 2 to 4 seconds (:

7 0

3 years ago

For thousands of years people thought that heavier objects fell faster than lighter objects. In fact, this is something that we

Ostrovityanka [42]

Answer:

See below

Explanation:

Gallileo is CORRECT in a vacuum where there is no air friction

air friction affects same or different weight objects differently and will cause same-weight or different weight objects to fall at different speeds

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2 years ago

A toy car sits motionless at the top of a ramp. What will happen to the car if a balanced force acts upon it?

dexar [7]

Answer:

kinetic energy because when the car moves again it will be faster then it was before

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3 years ago