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Temka [501]
3 years ago
5

What two things are necessary for work to be done on an object?

Physics
1 answer:
NemiM [27]3 years ago
6 0

Answer: Force and Movement

Explanation:

The first is that the object moves. The second is that a force must act on the object in the direction the object moves.

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A sled is accelerating at 2 m/s2 because it is being pushed on ice by Jenny. Tommy then jumps on the sled (he has the same mass
Radda [10]

Answer:

The acceleration of the total mass decreases by half (1/2)

Explanation:

Given;

acceleration of sled = 2 m/s²

From Newton's second law of motion, F = ma

⇒m = F/a

F is the force applied by Jenny

This force applied by Jenny should be the same, after Tommy jumps on the sled, but the acceleration will change.

F = m₁a₁ = m₂a₂

Since m₂ = 2m₁, then we calculate a₂

m₁a₁ = 2m₁a₂

a₂ = a₁/2

Therefore,The acceleration of the total mass decreases by half.

7 0
4 years ago
I have always wondered if the saying it was hot enough to fry an egg on the sidewalk could 20 points be true. Please describe ho
ikadub [295]

Answer:

This is one of the hottest summers America has ever seen and Jeremiah Warren is taking advantage of the heat wave and doing a little cooking…in his car!

It was about 98 or 99 degrees in Texas, so Jeremiah thought he’d head outside to see if it was hot enough to actually cook food.  He buttered up a frying pan on his dashboard and filled it with an egg, cookie dough, a hot dog and bacon (mmm…bacon!).  He set up another frying pan on the sidewalk and a few hours later he came back for a mid-day snack.

Explanation:

4 0
3 years ago
what would someones mass be if their weight was 158.4? This is for science homework, they gave me a random weight # but no mass.
bekas [8.4K]

ON EARTH, every kilogram of mass weighs about 2.205 pounds.

So if you know the weight (in pounds), and you know that it was
weighed on Earth, you can simply divide the pounds by 2.205 ,
and you'll get the mass (in kilograms).

I can see that on this science homework, they used 2.2 for the weight
of 1 kilogram expressed in pounds.  So just divide the weight by 2.2
to get the mass in kilograms.

(The weight number they gave you is not so random.  :-)  )


8 0
3 years ago
After a surface interval my pressure group is D. I want to do a repetitive dive to 38 feet for 32 minutes. What will be my new p
ExtremeBDS [4]

Answer:

New pressure group is N

Explanation:

The Repetitive Dive table has to be checked, the residual nitrogen for the maximum depth of 38 feet as a "D" diver, then add that to the actual dive time to get the total nitrogen time. The total nitrogen time and the maximum depth of 38 feet would put you on a pressure group N.

5 0
3 years ago
Read 2 more answers
Heres some earned points
egoroff_w [7]

Answer:

what do you mean by that.

5 0
3 years ago
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