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Inga [223]
3 years ago
15

how much time, in seconds, would it take for hellen to run 28 meters if she could run an average velocity of 3 meters per second

in a straight line?
Physics
1 answer:
iVinArrow [24]3 years ago
8 0

Answer:

7 1/3 seconds

Explanation:

28/3=7 1/3

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Suppose you are chatting with your friend, who lives on the moon. He tells you he has just won a Newton of gold in a contest. Ex
lisabon 2012 [21]

Answer:

The friend on moon is richer.

Explanation:

The value of acceleration due to gravity changes from planet to planet. So the weight of 1 Newton of gold carries different mass on different places. So we need to calculate the mass of gold that both persons have.

<u>FRIEND ON MOON</u>:

W₁ = m₁g₁

where,

W₁ = Weight of Gold won by friend on moon = 1 N

m₁ = mass of gold won by friend on moon = ?

g₁ = acceleration due to gravity on moon = 1.625 m/s²

Therefore,

1 N = m₁(1.625 m/s²)

m₁ = 0.62 kg

<u>ON EARTH</u>:

W₂ = m₂g₂

where,

W₂ = Weight of Gold won by me on Earth = 1 N

m₂ = mass of gold won by me on Earth = ?

g₂ = acceleration due to gravity on Earth = 9.8 m/s²

Therefore,

1 N = m₁(9.8 m/s²)

m₁ = 0.1 kg

Since, the friend on moon has greater mass of gold than me.

<u>Therefore, the friend on moon is richer.</u>

5 0
3 years ago
Suppose you have two chains available to suspend an object in the air. Let’s also say that you can arrange the suspension howeve
Liono4ka [1.6K]
<h2>your answer is going to be image 1 that one looks the most decent </h2>
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3 years ago
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Which motor and body should Devon use to build the car
Fynjy0 [20]

Answer:

is there any pictures or diagrams that i could use to base this question off of

Explanation:

5 0
3 years ago
Really need help with this Physics question!
mojhsa [17]

As we know that block of steel is continue to be in moving state

so here the friction must be kinetic friction between two surface

so we know that formula of kinetic friction must be

F_k = \mu_k mg

now we have

\mu_k = 0.57

mg = 25 N

now from the above equation we have

F_k = 0.57\times 25

F_k = 14.25 N

So here we need atleast 14.25 N force to continue sliding the box now as per given options all forces which are less than 14.25 N is not correct

Hence correct answer must be 18.0 N

<u>D) 18.0 N</u>

8 0
3 years ago
Derive the value of electric field due to a uniform sphere of charge.
Deffense [45]
<h2>Hey there!</h2>

The Force "F" applied on the unit electric charge "q" at a point describes the electric field.

<h3>☆ Formula to find electric charge:</h3>

  • E = F/q

<h2>Hope it helps </h2>
4 0
2 years ago
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