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Dafna1 [17]
3 years ago
12

Who created a steel plow

Physics
2 answers:
Brut [27]3 years ago
8 0
John Deere created steel plow
Elden [556K]3 years ago
8 0
John Deere invented the steel plow in 1837 .
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A rubber rod with a negative 4.0 C (-4.0 x 10-6 C) charge is 10 cm east of a pith ball with a positive charge of 5.0 C. A plas
AfilCa [17]
552. cm eastthat's the answer
7 0
3 years ago
how come if you jump in a train you will land in the same spot but if you jump on top of the train you won't? i tried to make it
soldier1979 [14.2K]

Answer:

Well, it has to do something with the force of the train. It's pulling you, a force of gravity

However jumping off results in a different sort of energy, the train know is moving farther away as you jump down. So you end up in a different place

Explanation:

3 0
3 years ago
A beach ball with a volume of 5,000 cm3 is pushed underwater. What is the magnitude of the buoyant force pushing upwards? The de
Kobotan [32]
<h2>Hello!</h2>

The answer is:

The buoyant force is equal to 49N.

<h2>Why?</h2>

The buoyant force is the force that pushes upwards and object when it's submerged in water, this force is always trying to move the object to the surface of the liquid or water.  We must consider that the volume of water or liquid displaced is equal to the volume of the submerged object.

We can calculate the buoyant force using the following formula:

F_{B}=Density*VolumeDisplaced*GravityAcceleration

Where,

Density is the density of the water or liquid.

Volume displaced is equal to the volume of the submerged object.

Gravity acceleration is the acceleration due to gravity.

So, from the statement we know that:

VolumeDisplaced=BeachBallVolume=5000cm^{3}\\\\Density=1\frac{gram}{cm^{3} }=\frac{0.001kg}{cm^{3} }\\\\g=9.8\frac{m}{s^{2} }

Now, substituting and calculating we have:

F_{B}=Density*VolumeDisplaced*GravityAcceleration

F_{B}=0.001\frac{kg}{cm^{3}*} *5000cm^{3}*9.8\frac{m}{s^{2} }

F_{B}=0.001\frac{kg}{cm^{3}*} *5000cm^{3}*9.8\frac{m}{s^{2} }

F_{B}=49\frac{Kg.m}{s^{2}}=49N

Hence, we have that the correct answer is:

The buoyant force is equal to 49N.

Have a nice day!

7 0
4 years ago
Power is the time rate of change of work. <br> a. True<br> b. False
Bumek [7]
The statement about "<span>Power is the time rate of change of work" is true. The answer is letter A. Power is presented by the equation P = Wt where P is the power, W is work and t is time.</span>
6 0
4 years ago
Look at the diagram. The electricity supplier charges 14p per unit. How much did this electricity cost over the 24 hour period
timama [110]

Total units

  • 31487-31463
  • 23units

Cost°

  • 14(23)
  • $322
4 0
2 years ago
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