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Sever21 [200]
3 years ago
10

Which are long chains of subunits formed by the process of polymerization? Check all that apply.

Physics
2 answers:
Leya [2.2K]3 years ago
8 0
B,D,F just took the test
vampirchik [111]3 years ago
6 0

The long chains of subunits formed by the process of polymerization are:

B. Macromolecules

D. Polymers

F. DNA

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Calculate the momentum of a 4 kg Bolling ball being thrown at a speed of 3 m/s
bonufazy [111]

We are given –

  • Mass of boiling ball is, m = 4 kg
  • Speed is, v = 3 m/s
  • Momentum, P =?

As we know –

↠Momentum = Mass × Speed(Velocity)

↠Momentum = 4 × 3 kgm/s

↠Momentum = 12 kgm/s

  • Henceforth,Momentum will be 12 kgm/s.
7 0
2 years ago
2. An 85.5 kg astronaut is training for accelerations that he will experience upon reentry. He is placed in a centrifuge (r = 12
icang [17]

Answer Expert Verified

Hello here is your answer and also please mark me as brainlest

Since one revolution around a circle is 2 pi radian; hence 1 rpm equals 2 pi radians per minute. And because a minute has 60 seconds, 1 rpm equals 1/60 revolution per second. Therefore, we have 2 pie/60 * 15.3 = 0.2513 rps. The linear velocity v = wr where w is the angular velocity in rad/s and r is the distance. So we have 0.2513 * 10.0 = 2.513 rad/s The centripetal acceleration is given by a = w^2 r = (2.513)^2 * 10 = 63.15 rad/s2 The centripetal force F = mass * centripetal acc = 75 * 63.15 = 4736.25 N The torque = centripetal force * distance = 4736 * 63.15 = 299078.4 Nm Two forces acts on the astronaut. The normal force and acceleration due to gravity.

I hope this help you

brainlest

8 0
3 years ago
ingrid kicks a football with an initial velocity of 12 m/s at an angle 45 relative to the ground. what is the horizontal compone
nydimaria [60]

Let's assume that the coordinate system is defined as positive in the first quadrant.

The system has its origin in the place where Ingrid kicks the football ball.

We have then that the horizontal component is given by:

x = 12cos (45)

Rewriting we have:

x = 12 ( \frac{\sqrt{2}}{2})\\x = 8.485281374

Rounding the obtained result we have:

x = 8.5 \frac{m}{s}

Answer:

The horizontal component of the initial velocity to the nearest tenth is:

x = 8.5 \frac{m}{s}

4 0
3 years ago
Read 2 more answers
In order to increase the kinetic energy of a speeding train by 44%, 42MJ of work must be performed (1 MJ = 106 J). If the final
victus00 [196]

Answer:

Explanation:

100 % increase makes an amount 2 times .

44 % increase = 42 MJ

100 % increase = 95.45 MJ

final kinetic energy = 2 x 95.45 MJ

= 190.9 x 10⁶ J

1/2 m v² = 190.9 x 10⁶

.5 x m x 9² = 190.9 x 10⁶

m = 4.71 x 10⁶ kg

= 4710 metric ton .

7 0
3 years ago
_________ is a rhythmic disturbance that carries energy through matter or space.
Andrej [43]

Answer: A wave

Explanation:

Bc I know this

8 0
3 years ago
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