PHYSICS HIGH SCHOOL

The active sections that are located along fault lines are called A. seismic gaps.
B. seismic risks.
C. stress accumulations.
D. recurrence gaps

Answers

Answer 1
Answer: B. seismic risks.

The active sections that are located along fault lines are called seismic risks.
NOT:

A. seismic gaps. 
C. stress accumulations. 
D. recurrence gaps

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Which statement is true about a polarized object? A) It gains electrons and becomes negatively charged. B) It gains protons and becomes positively charged. C) The number of positive and negative charges can be the same. D) It has to be a metal. E) There is no change in the distribution of the charge in the object.
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A bicycle and rider travel along a road. Which is true?A. The bicycle and the rider undergo translation.
B. Only the rider undergoes a translation.
C. Only the bicycle undergoes translation.
D. Neither the bicycle nor the rider undergoes a translation.

Answers

Answer:

A. The bicycle and the rider undergo translation.

Explanation:

When a rider is riding his bicycle along the road, the wheels of the bicycle will rotate. This rotation of wheels translates both the rider and the bicycle in space.

So the correct answer is option A
A bicycle and rideer travel along a road. the true about the sentence is: a. the bicycle and the rider undergo translation. The rider moving because you have to push the pedals and make the bike moves too.

hope this help

Suppose two clowns on skateboards are standing motionless on a smooth surface 2.0 m apart. Clown B tosses a 5.0 kg medicine ball to Clown A. After the throw the medicine ball is traveling with a speed of 10 m/s. What is the resulting velocity of Clown B after throwing the ball? *Indicate which direction is positive.

Answers

Answer:

Explanation:

Suppose two clowns on skateboards are standing motionless on a smooth surface 2.0 m apart. Clown B tosses a 5.0 kg medicine ball to Clown A. After the throw the medicine ball is traveling with a speed of 10 m/s. What is the resulting velocity of Clown B after throwing the ball? *Indicate which direction is positive.

By momentum conservation

Momentum of ball m_b= 10 . 5 = 50 kg m/s

m_1v_1=m_bv_b

70v_1= 5* 10

v_1 = 0,714m/s left

m_2v_2=m_bv_b

50*10 = 50 v_b

v_2= 1m/s Right

What is the maximum temperature in a hot whirlpool to be considered safe?

Answers

Answer:

104 degrees

Never let the hot tub's water temperature get above 104 degrees Fahrenheit. For a healthy adult, a temperature of 100 degrees is regarded as safe. Young kids should use extra caution.

if the earth stops rotating about its axis then what will be the change in the value of g at a place in the equator-plane? Assume that earth is a sphere with a radius of 6.4*10*6m.

Answers

Answer:

if the earth stops rotating the value of g increases

Imagine that an uncharged pith ball is brought into the electrostatic field of a charged rod. The side of the pith ball closest to the negatively charged end of the rod will A. not experience any induced charge and remain neutral.
B. be given a positive charge produced by the movement of electrons to the other end of the ball.
C. be given a negative charge produced by the movement of electrons from the rod.
D. be given a negative charge produced by the movement of electrons from the other end of the ball.

Answers

As per the question the uncharged pith ball is taken towards the electrostatic field of a charged rod.

It is told that the side of the pith ball is closest to the negatively charged end of the rod .

The pith ball was initially neutral.The electrons in the atom were oriented in their respective orbits.

Whenever it is taken towards the negative end of the rod,the electrons present in the ball will not stick to their orbit .Basically the closest electrons will suffer electrostatic repulsive force and will come out their orbits.They will move towards the other end of the pith ball.Hence the closest side of the pith ball will acquire  positive charges and other side will be negative.

The bound charges nearest to the charged rod is called induced positive charges and bound negative  charges present at the other end are called free bound charges.The induced charges and free charges are equal in amount.Hence the pith ball is neutral.

Hence from above we see that only option B  is right.

The correct answere is B.

Explanation: When the negative charge rod is brought close to the uncharged pith ball, the electron on side towards the rod will be repelled by the electrostatic field. This will create an electron deficient site. Hence, this side will be given a positive charge.

Brody and Ethel are arguing about waves. Brody says that waving his hand back and forth is a scientific wave. Ethel says that it is not. Which statement best describes who is correct? -Brody is correct because the wave involves an input of energy. -Ethel is correct because energy is not carried from one place to another. -Brody is correct because the pattern repeats. -Ethel is correct because the motion has no pattern. Also... Khalad is measuring the amplitude of a wave. What can be known about this wave? -It is a sound wave. -It is a transverse wave. -It is an electromagnetic wave. -It is a mechanical wave.

Answers

In the first question, the answer would be the statement 'Brody is correct because the wave involves an input of energy'. The hand wave involves an input of energy and this energy is repeated and is carried from one place to another. 

For the next question, the answer would be 'it is a transverse wave' because all are transverse waves. 

Answer:

Ethel is correct because energy is not carried from one place to another.

It is a transverse wave.

Explanation:

During the propagation of waves from one point or place to another, energy is being transferred. Thus, when one's hand is being waved, there is no transfer of energy from one point to another. Therefore, Ethel is right while Brody is wrong.

A transverse wave is known as a type of wave that the direction of propagation is perpendicular to the vibration of the medium. Therefore, the wave is a transverse wave.

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