229 Best Physics Questions and Answers (Q&A) - ProProfs Discuss

What is this called when some types of materials are mechanically deformed, they create a voltage?

Kfdm
Answered: Apr 24, 2024

The piezoelectric effect

1 Answer

275 views

What is a Newton (in units)?

I.Elizabeth
Answered: Feb 02, 2018

Newton is the name of the renowned mathematician. However, thanks to his ingenious inventions and physics formulas, it is also the name of forces and laws. In honor of this scientist, the...Read More

2 Answers

273 views

What are solar eclipse glasses?

C.Kevin
Answered: Nov 26, 2017

Solar eclipse glasses are simply specialized glasses that offer enough protection that you can look at the sun for short periods of time without causing damage to your eyes. The sun is so bright...Read More

1 Answer

272 views

How depth of invasion of mud filtrate is related to porosity?

T. Perez
Answered: Sep 17, 2019

The correct answer to this question is B, Inversely proportional. A proportion is inverse when two variables have a relationship that leads to their product equating to a constant value. In other...Read More

3 Answers

264 views

What will be the horizontal speed of a pillow if is drops from a jetliner that cruises at 600 km/h?

Markda John
Answered: Jan 02, 2018

The person who answered before me said 600 km/h. I would be inclined to agree. The question is asking for the horizontal speed of the pillow relative to the ground. Since the pillow itself is...Read More

2 Answers

257 views

What is the total time it takes before it reaches the ground?

Misschowj
Answered: Apr 24, 2024

6.5s
6.5 s
6.46s
6.46 s

Taking upwards as positive, u = 30.0 m/s s = -15.0m (the ball ends up 15.0m downwards which is negative) a = -10m/s (this acts downwards which is...Read More

1 Answer

256 views

How come the states of matter are five while I learned that they are only 3 which are: solid, liquid, and gas?

K. Shadrach
Answered: Nov 14, 2019

There was a time when people were taught that there are only three states of matter available, namely solid, liquid, and gas. Over the past years, the machines and tools that researchers and...Read More

2 Answers

255 views

How does Photoconductivity affect Resistance?

M. Parker, Internet Researcher
Answered: Dec 20, 2018

Photoconductivity is an optional and electrical phenomenon in which a material becomes electrically conductive because of the absorption of electromagnetic radiation like visible light,...Read More

1 Answer

251 views

What are the 3 big questions in life?

Angelsdolphin
Answered: Apr 24, 2024

Scan time decreases

1 Answer

249 views

How is Resistivity different from Resistance?

C. Block, English Professor
Answered: Dec 13, 2018

One of the significant differences between the resistance and the resistivity of the substance is that the resistance impedes the flow of free electrons whereas the resistivity is the property of...Read More

1 Answer

248 views

What force slows down a rolling ball?

DanielCarig
Answered: Apr 24, 2024

Friction

1 Answer

245 views

How is the resistance of a resistor determined?

Samantha Stewart, Philanthropist
Answered: Dec 13, 2018

The purpose of a resistor is to challenge the electric current running through it. This is called electrical resistance, and it is measured in ohm units. The resistance can be computed by using...Read More

1 Answer

244 views

What unit is electric resistance typically measured in?

Alas kajim
Answered: Apr 24, 2024

Ohms

1 Answer

239 views

What is the difference between Izod and Charpy Methods?

C. Perez, Writer
Answered: Oct 13, 2020

When determining the specific force of collision properties and, of course, the quality of the materials, izod vs. Charpy methods are always helpful. For Izod method, the pendulum, the materials...Read More

4 Answers

236 views

What does this series do: ∞∑ 8/ (3n2+ 2n+1)=1?

Harshitap
Answered: Apr 24, 2024

Converge

Correct Answer: Converge. 1. Since the nth term divergence test does not work, the easiest way to do this is by the Direct Comparison Test: 8/(n^2)> 8/(3n^2+2n+1) 2....Read More

1 Answer

234 views

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