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Evgen [1.6K]
3 years ago
6

I will mark brainlyest

Physics
2 answers:
Sladkaya [172]3 years ago
7 0
All of those changes CAN be used to do the job.

A and C are used.

B and D are not used.
Alborosie3 years ago
7 0
All of those would work
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A ping pong ball with a dent in it can be put into a pan of boiling water. After a short amount of time, the dent will pop out.
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heat from water goes into air in ball

air expands

ping goes the dent

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4 years ago
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You want to determine whether the mass of an object attached to a parachute affects the time it takes to fall to the ground. In
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Answer:

The Answer is below!!

Explanation:

The larger the area of the parachute, the more air needs to be pushed out of the way, and so the slower it descends. the independent variable is the shape of the parachutes' canopies. The dependent variable is the drop speeds of the parachutes. How long does it take for the parachutes to reach the ground? Measure this using a stopwatch.

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2 years ago
If an atom has 34 protons and 40 neutrons, what is its mass number?
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3 years ago
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Not a assignment question, just wanna know if scientists know what’s beyond the edge universe
Bond [772]
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8 0
3 years ago
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Starting fom rest, a car accelerates at a constant rate, reaching 88 km/h in 12 s. (a) What is its acceleration? (b) How far doe
JulsSmile [24]

Answer:

(A)  a=2.0.37m/sec^2

(B) s = 146.664 m

Explanation:

We have given car starts from the rest so initial velocity u = 0 m /sec

Final velocity v = 88 km/hr

We know that 1 km = 1000 m

And 1 hour = 3600 sec

So 88km/hr=88\times \frac{1000}{3600}=24.444m/sec

Time is given t = 12 sec

(A) From first equation of motion v = u+at

So 24.444=0+a\times 12

a=2.0.37m/sec^2

So acceleration of the car will be a=2.0.37m/sec^2

(b) From third equation of motion v^2=u^2+2as

So 24.444^2=0^2+2\times 2.037\times s

s = 146.664 m

Distance traveled by the car in this interval will be 146.664 m

6 0
4 years ago
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