PHYSICS HIGH SCHOOL

While discussing the effects of loose wheel bearings: Technician A says that vibration may occur while driving. Technician B says that the bearing may make noise. Who is correct? a. Technician A b. Neither A nor B c. Technician B d. Both A and B

Answers

Answer 1
Answer:

Answer:

Option "D" is the correct answer i.e. Both Technicians A & B

Explanation:

Dear,

Loose wheel bearings can be caused on any machine.

The Following can be the reasons :

  • the machine or motor is installed improperly
  • the rotor(rotating part) of machine is not balanced
  • the cover get deteriorated with time
  • Bad manufacturer

So, when the bearings will be loose then the following can happen:

  1. It will produce vibration in machine which can be judged by a vibration pen eg. SKF vibration pen
  2. The vibration will also result in noise. You can check by
  3. The machine winding if it is motor will burn-out.
  4. Bush needs to be installed if the bearing runs loose.

Therefore,  "D" is right.

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When vibrational motion in an object increases, which is a true statement? A.
Kinetic energy, temperature, and thermal energy increase.


B.
Kinetic energy, temperature, and thermal energy decrease.


C.
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D.
Kinetic energy and temperature increase; thermal energy decreases.

Answers

A -..................................is the correct option

Answer:

The answer is A

Explanation:

Which of these statements is true? A.
Some molecules may contain no atoms.


B.
Some elements found in nature exist as molecules.


C.
Some compounds include only one type of element.


D.
Some atoms are made of two or more different elements.

Answers

B). Some elements found in nature exist as molecules. 
That is, their atoms travel around in bound pairs. 
Examples are Hydrogen, Oxygen, and Nitrogen.

A). No.  Without atoms, you can't make a molecule.

C). No.  A compound is a chemical combination of two or more elements.

D). No.  An atom is the smallest unit of ONE single element.

Hello, your answer is, C. Some compounds include only one type of element.

I hope it helped!

18. The orbits of planets being elliptical was one the planetary laws developed by

Answers

It was a man named Johannes Kepler. 

A bike moves. 50 m in 10 seconds calculate the speed of the bike

Answers

The speed of the bike is calculated by dividing the total distance travelled by the total time taken, which in this case is 50 meters divided by 10 seconds. This yields a speed of 5 meters per second.

This involves a concept from Physics called speed.

Speed is defined as the distance covered by an object divided by the time taken to cover that distance.

Since the bike moves 50 meters in 10 seconds, to calculate the speed:

Identify the distance covered which is 50 meters.

Identify the time taken which is 10 seconds.

Divide the distance by the time to get the speed = 50 m / 10 s = 5 m/s. So, the speed of the bike is 5 meters per second.

Learn more about speed here:

brainly.com/question/22610586

#SPJ2

Answer:

We know that

Speed = Distance/ Time

Explanation:

  • Distance is 50 m
  • Time is 10 seconds

Speed = 50/10

= 5 m/s

What are the factors on which pressure of liquids depends??

Answers

The pressure inside a liquid depends on the depth and the liquid's density.

Which statement best describes how light waves travel in a uniform medium. A. in straight lines. . B. in extending circles. . C. in bent lines. . D. in shrinking ripples

Answers

Light waves travel in straight lines when they are travelling in a uniform medium. This is because the waves are travelling at the same speed.

The answer is a. Straight lines
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