3 years ago

How did Rutherford change the model of the atom?

1 answer:

3 0

<span>A.) He used an experiment with gold foil to prove that an atom had a positive nucleus in the middle and was surrounded by negative electrons.

Hope this helps!
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Sound travels slowest through gases _____________________. Group of answer choices because the molecules of gas are close togeth

Juliette [100K]

Molecules is the anwser

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2 years ago

A circuit has a voltage of 10 V and a current of 5 A. What must the resistance be?

azamat

Answer:

R=V/I

R= 2

Explanation:

R = 10V/5A

R = 2ohms

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2 years ago

You need to repair a gate on the farm. The gate weighs 100 kg and pivots as indicated. A small diagonal bar supports the gate an

tekilochka [14]

Answer:

The force is $F = 3920 \ N$

Explanation:

The diagram for this question is shown on the first uploaded image

From the question we are told that

The weight of the gate is $G = 100\ kg$

The vertical component of F is $F_y = F\ sin \theta$

From the diagram , taking moment about the pivot we have

$W_g * 2 - F_y * 1 = 0$

Where $W_g$ is the weight of the gate evaluated as

$W_g = m_g * g = 100 * 9.8 = 980 \ N$

=> $980 * 2 - Fsin(30) * 1 = 0$

=> $F = \frac{1960}{sin(30)}$

=> $F = 3920 \ N$

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3 years ago

Which forces are shown on a free body diagram?

notsponge [240]

Answer:

What is a Free Body Diagram?

The free body diagram helps you understand and solve static and dynamic problem involving forces. It is a diagram including all forces acting on a given object without the other object in the system. You need to first understand all the forces acting on the object and then represent these force by arrows in the direction of the force to be drawn.

Explanation:

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2 years ago

The device that measures current in a wire by using the deflections of an electromagnet in an external magnetic field is

Law Incorporation [45]

A galvanometer hope this helps

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6 0

2 years ago

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