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3 years ago

Dalton was one of this first scientist to experiment prove that

1 answer:

5 0

John Dalton. Modern Atomic Theory (John Dalton) Experiments with gases that first became possible at the turn of the nineteenth century led John Dalton in 1803 to propose a modern theory of the atom based on the following assumptions. 1. Matter is made up of atoms that are indivisible and indestructible.

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An unwary football player collides with a padded goalpost while running at a velocity of 5.70 m/s and comes to a full stop after

ollegr [7]

The relationship between the initial velocity, final velociy, distance, and deceleration can be expressed in the following equation.

2(a)(0.270 m) = 0² - (5.70 m/s)²

The value of a (which is the deceleration) is 0.06 m/s². Thus, the answer is that the deceleration value is approximately 0.06 m/s².

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4 years ago

Microwaves and infrared waves are similar because they both have

Orlov [11]

Microwave and Infrared Radiation. Both are forms of electromagnetic radiation. Both are transmitted as waves. Waves are converted to heat.

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3 years ago

Frank has a sample of steel that weighs 80 grams. If the density of his sample of steel is 8 g/cm3, what is the sample’s volume?

olasank [31]

30 is the answer for this

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3 years ago

Write a summary paragraph of 200 words discussing this experiment and the results. Use the following questions and topics to hel

Papessa [141]

Answer:

What was your hypothesis? According to your data, do you think your hypothesis was correct? (Be sure to refer to your data when answering this question.)

Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.

Be sure to submit your data along with your paragraph.

Part 2

What effect did the temperature have on the viscosity of the honey? (Be sure to refer to your data when answering this question.)

Give at least two practical examples where knowledge of viscosity is important.

Essay Question:

Write a summary paragraph for each part discussing this experiment and the results. Use the following questions and topics to help guide the content of your paragraph.

Part 1

What was your hypothesis? According to your data, do you think your hypothesis was correct? (Be sure to refer to your data when answering this question.)

Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.

Be sure to submit your data along with your paragraph.

Part 2

What effect did the temperature have on the viscosity of the honey? (Be sure to refer to your data when answering this question.)

Give at least two practical examples where knowledge of viscosity is important.

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4 years ago

At what time t1 does the block come back to its original equilibrium position (x=0) for the first time? Express your answer in t

Furkat [3]

Answer:

t_1 = 0.5*pi*sqrt( m / k )

Explanation:

Given:

- The block of mass m undergoes simple harmonic motion. With the displacement of x from mean position is given by:

x(t) = A*cos(w*t)

Find:

- At what time t1 does the block come back to its original equilibrium position (x=0) for the first time?

Solution:

- The first time the block moves from maximum position to its mean position constitutes of 1/4 th of one complete cycle. So, the required time t_1 is:

t_1 = 0.25*T

- Where, T : Time period of SHM.

- The time period for SHM is given by:

T = 2*pi*sqrt ( m / k )

Hence,

t_1 = 0.25 * 2 * pi * sqrt( m / k )

t_1 = 0.5*pi * sqrt( m / k )

6 0

3 years ago