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3 years ago

A mother pushes a baby stroller 10 meters by applying 40 newtons of force. How much work was done?

Physics

2 answers:

nikklg [1K]3 years ago

7 0

The answer is the last one

I hope that helped

arlik [135]3 years ago

3 0

Answer

400 joules

Explanation:

ima make it simple to get the joules all you do is multiply the amount of meters which in this case is 10 times the amount of newton which is this constant is 40 newtons and you know the answer

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A long, East-West-oriented power cable carrying an

Alla [95]

Answer:

200A

Explanation:

Given that

the distance between earth surface and power cable d = 8m

when the current is flowing through cable , the magnitude flux density at the surface is 15μT

when the current flow throught is zero the magnitude flux density at the surface is 20μT

The change in flux density due to the current flowing in the power cable is

B = 20μT - 15μT

B =5μT -----(1)

The expression of magnitude flux density produced by the current carrying cable is

$B=\frac{\mu_0I}{2\pi d}$ -----(2)

Substitute the value of flux density

B from eqn 1 and eqn 2

$\frac{\mu_0I}{2\pi d}=5\times 10^-^6\\\\\frac{(4\pi \times 10^-^7)I}{2 \pi (8)} =5\times 10^-^6\\\\I=200A$

Therefore, the magnitude of current I is 200A

8 0

3 years ago

Why does food need to be digested?

bearhunter [10]

Answer:

mike auxmaul

Explanation:

who knew it was smaller

4 0

3 years ago

Read 2 more answers

List the forms of renewable energy that are curently in use

aliya0001 [1]

Here are the ones that I know about
and can think of just now:

-- wind
-- solar
-- nuclear
-- tidal
-- hydro
-- geothermal
-- biomass

4 0

3 years ago

Calculate the acceleration of a car that begins at rest at a stop light and accelerates to a speed of 20m/s in a 10 sec time per

Dominik [7]

A = delta v over delta t delta v is calculated with final velocity less initial velocity then delta v is equals to 20 - 0 that is 20m/s and to calculate delta t is like delta v is final time less initial time as initial time always is 0 the delta t is equals to 10s then a = 20/10 then acceleration is 10m/s^2 (remember that is squared)

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3 years ago

4. Many of the teachers think that if a student sleeps more on the night before the test, then they

Effectus [21]

Answer:

a sleep doesnt get to depict whether you get a good grade or not its what you know.

8 0

1 year ago