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arlik [135]
3 years ago
5

A cube of mass m1=9.6 kgm1=9.6 kg is sitting on top of a second cube of the same size and mass m2=0.8 kgm2=0.8 kg while both are

in free fall. Ignoring any air resistance, what is the magnitude of the normal force with which the bottom cube is acting on the top cube?
Physics
1 answer:
GalinKa [24]3 years ago
8 0

Answer:N=0

Explanation:

Given

m_1=9.6 kg

m_2=0.8 kg

both blocks experiencing free fall so net weight of block during free fall is zero thus there is no normal reaction between them.

N=0

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A bicycle and a car start their journey at the same time the cyclist reaches it's top speed of 10mls in 15 the car reaches a spe
Y_Kistochka [10]

Complete question is;

A bicycle and a car start their journey at the same time the cyclist reaches it's top speed of 10m/s in 15 s, the car reaches a speed of 15 m/s in 55 s. which has the greater acceleration the car or the bicycle.

Answer:

The bicycle has the greater acceleration.

Explanation:

Cyclist reaches a top speed of 10m/s in 15 s.

Formula for acceleration here is;

a = v/t

a = 10/15

a = 0.67 m/s²

Car reaches a speed of 15 m/s in 55 s.

Thus;

a = 15/55

a = 0.27 m/s²

From the 2 acceleration values gotten, we can say that;

The bicycle has the greater acceleration.

6 0
3 years ago
An open-end mercury manometer is connected to a low-pressure pipeline that supplies a gas to a laboratory. Because paint was spi
almond37 [142]

Answer:

A. Using

Pgauge= Pmanometer

And we know that

Pgauge= deta(hpg)

So deta h = Pgauge/density x g

So

= 7.5(6894.76/1psig)/ 13.6*10^3*9.8m/s²)

= 387.9mm

So to find height of pipe connected to the pipe we say

= h -deta h

= 900-387.97mm

=512.02mm

B. We use manometry principle

Pgas+density xg(25*10^3)-PX density{h-(H-0.25)=0

So

Finally Pgas= 6.54psig

3 0
3 years ago
The conversion of potential energy to kinetic energy follows the ______.
LuckyWell [14K]
The answer is The Law of Conservation of Energy, hope this helps.

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7 0
3 years ago
Read 2 more answers
Question 3 of 10
andre [41]

Answer:

<h3>The answer is 10 m/s</h3>

Explanation:

The velocity of the object can be found by using the formula

v =  \frac{p}{m}  \\

p is the momentum

m is the mass

From the question we have

v =  \frac{150}{15} \\

We have the final answer as

<h3>10 m/s</h3>

Hope this helps you

4 0
3 years ago
Hares were introduced into a grassland ecosystem. They don’t have any natural predators there, and they can eat native plants fo
marshall27 [118]
The correct answers should be<span> the hares will multiply indiscriminately and destroy the ecosystem and </span><span>the native herbivores will experience increased competition for resources.

Since the hares wouldn't have predators, and they are famous for rapid breeding, they would overpopulate the ecosystem. On the other hand, the native animals would have to compete with this population of hares for food and would have less for for themselves.</span>
4 0
3 years ago
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