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chubhunter [2.5K]
3 years ago
7

Answer these questions with step by step

Physics
2 answers:
Harlamova29_29 [7]3 years ago
6 0

Answer:

i dont rlY KNow sorryyyyyyyyy

Explanation:

DedPeter [7]3 years ago
5 0
I’m pretty sure you should just guess cause
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What is kinetic energy?
skad [1K]
Kinetic energy is the energy the makes an object move. 
6 0
3 years ago
Read 2 more answers
Angular velocity in the z direction of a flywheel is w(t)=A + Bt2 The numerical values of the constants are A=2.75 and B=1.50. W
Ivanshal [37]

Answer:

α(0) = 0 rad/s²

α(5) = 15 rad/s²

Explanation:

The angular velocity of the flywheel is given as follows:

w(t) = A + B t²

where, A and B are constants.

Now, for the angular acceleration, we must take derivative of angular velocity with respect to time:

Angular Acceleration = α (t) = dw/dt

α(t) = (d/dt)(A + B t²)

α(t) = 2 B t

where,

B = 1.5

<u>AT t = 0 s</u>

α(0) = 2(1.5)(0)

<u>α(0) = 0 rad/s²</u>

<u></u>

<u>AT t = 5 s</u>

α(5) = 2(1.5)(5)

<u>α(5) = 15 rad/s²</u>

6 0
3 years ago
What happens to the force needed to stretch a rubber band when putting it on a stack of papers?
zmey [24]

Answer:the force is needed to stretch it farther.

Explanation: the definition of force is push or pull so imagine stretching a rubber band your pulling the band which means you increase the force.

4 0
2 years ago
Read 2 more answers
A person holds a portable fire extinguisher that ejects 1.0kg of water per second horizontally at a speed of 6.0 m/s. What newto
Leviafan [203]

Answer:

6 N

Explanation:

\dfrac{m}{t} = Mass flow rate = 1 kg/s

v = Final velocity = 6 m/s

u = Initial velocity = 0 m/s

Force is obtained when we divide change in momentum by time

F=\dfrac{m(v-u)}{t}\\\Rightarrow F=\dfrac{m}{t}(v-u)\\\Rightarrow F=1(6-0)\\\Rightarrow F=6\ N

The force the person exert on the extinguisher in order to prevent it from accelerating is 6 N

7 0
3 years ago
What is the frequency of a wave that has a wavelength of 2000 meters and is traveling at 20 m/s?
Artist 52 [7]

Answer:

freqiency=velocity/wavelength

ief=20/2000=0.01hz

7 0
3 years ago
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