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insens350 [35]
2 years ago
11

Pls answer need help

Physics
1 answer:
igomit [66]2 years ago
6 0

Answer:

See below

Explanation:

Find the NET forces on the objects

A  20==>

B    0

C  30==>

D  15==>    

So biggest accel = C because it has the most force acting on it

 next is A because it has the next biggest force

    next is  D        then    B ...B has no net force acting on it  

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A balloon is expanded to the same volume as that of a human head. Do an order-of-magnitude estimate of the volume of this balloo
Grace [21]

Answer:

Volume of head = 1000 cm^3

Explanation:

 The head of a normal person can be assumed as a sphere with radius 10 cm.

 Volume of sphere=\frac{4}{3} \pi r^3, where r is the radius.

 We have approximate radius = 10 cm.

  Approximate volume of head =\frac{4}{3}* \pi *10^3=4189 cm^3

 In the given options the closest value to the approximate volume is 1000 cm^3.

 So, volume of head = 1000 cm^3

4 0
3 years ago
__________ is extremely resistant to oxidation and rusting.
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3 0
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At the top of a giant swing on the gymnastics high bar, candy's velocity is 1 m/s, and she is 3.5 m high. if candy's mass is 50
Allushta [10]
The total mechanical energy is the sum of the kinetic energy and the gravitational potential energy:
E=K+U= \frac{1}{2}mv^2 +mgh
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6 0
3 years ago
What is the answer??
kati45 [8]

Answer:

lol do you still need help?

Explanation:

8 0
3 years ago
A runner of mass 51.8 kg starts from rest and accelerates with a constant acceleration of 1.31 m/s^2 until she reaches a velocit
Stells [14]

Answer:32.24 s

Explanation:

Given

mass of runner (m)=51.8 kg

Constant acceleration(a)=1.31 m/s^2

Final velocity (v)=5.47 m/s

Time taken taken to reach 5.47 m/s

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5.47=0+1.31\times t

t=\frac{5.47}{1.31}=4.17 s

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s=\frac{1}{2}\times 1.31\times 4.17^2=11.42 m

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thus time =\frac{distance}{speed}

t_2=\frac{153.57}{5.47}=28.07 s

Total time=28.07+4.17=32.24 s

6 0
3 years ago
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