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dangina [55]
3 years ago
9

T/F climate can change quickly

Physics
1 answer:
Vitek1552 [10]3 years ago
4 0

bhdfbvhfdbvhhfhvfhdf vfdhybvghbhdf

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Calculate:<br> The time taken for a plane to travel<br> 3,000 km at a speed of 200 m/s
Alborosie

Time = (distance) / (speed)

Distance = 3,000 km  =  3,000,000 meters

Speed = 200 m/s

Time = (3,000,000 m) / (200 m/s)

Time = <em>15,000 seconds</em>

That's 4 hours 10 minutes

6 0
3 years ago
17. A 25 kg block is initially at rest on a rough, horizontal surface. A horizontal force of 75 N is required to set
lapo4ka [179]

Answer:

0.30581

0.24464

Explanation:

\mu_s = Coefficient of static friction

\mu_k = Coefficient of kinetic friction

F_f = 75 N

F_k = 60 N

Normal force

F_n=mg\\\Rightarrow F_n=25\times 9.81\\\Rightarrow F_n=245.25\ N

Frictional force

F_f=\mu_sF_n\\\Rightarrow \mu_s=\frac{F_f}{F_n}\\\Rightarrow \mu_s=\frac{75}{245.25}\\\Rightarrow \mu_s=0.30581

The coefficient of static friction is 0.30581

Kinetic force

F_k=\mu_kF_n\\\Rightarrow \mu_k=\frac{F_k}{F_n}\\\Rightarrow \mu_s=\frac{60}{245.25}\\\Rightarrow \mu_s=0.24464

The coefficient of kinetic friction is 0.24464

4 0
3 years ago
3. As an object’s temperature increases, the ____________________ at which it radiates energy increases.
Vladimir [108]

Answer:

As an object’s temperature increases, the Rate at which it radiates energy increases.

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3 years ago
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Describe how flowering plants reproduce through sexual reproduction
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<span>Transfer of the male gametes to the female ovules in a process called pollination.

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A nail is made pointed why​
ioda

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A Nail is made pointed to increase the pressure exerted by them as pressure increases with the decrease in area.

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