PHYSICS HIGH SCHOOL

A physical change occurs when a material changes shape or size but the composition of the material does not change. True or False?

Answers

Answer 1
Answer: It is true that a physical change occurs when a material changes shape or size, but the composition of the material does not change. The correct answer is True. 

Related Questions

Suppose you had a feather, an orange, and a watermelon. Which of the following describes how quickly each of the objects will fall without air resistance, relative to the other two?a. All three objects will fall at the same rate. b. The watermelon will fall faster than the other two. c. The orange will fall the fastest, followed by the watermelon and then the feather. d. The feather will fall faster than the orange, which will fall faster than the watermelon.
How is the resistor of a 40v lamp higher then the resistor of a 60v lamp?
which of the following is the true statement ? a. the magnetic force is perpendicular to the magnetic field direction. b. the magnetic force is parallel to the magnetic field direction. c. the magnetic force is antiparallel to the magnetic field direction. d. none of these
How much work is done by a crane that lowers 1000N of material a distance of 150
4. List 3 detailed examples of Newton's 3rd Law.

How high does the atmosphere extend from the earth

Answers

The atmosphere extend from the Earth up to  10,000 km.

What is atmosphere?

An atmosphere is the layers of gases surrounding a planet Earth. It's atmosphere is composed of about 78% nitrogen, 21% oxygen, and other gases.

Earth's atmosphere has five major layers. From lowest to highest, the layers are the troposphere, stratosphere, mesosphere, thermosphere and exosphere.

The exosphere is the topmost layer of Earth's atmosphere . It extends from the end of thermosphere, about 700 km above sea level, to about 10,000 km.

Thus, the atmosphere extend from the Earth up to  10,000 km.

Learn more about atmosphere

brainly.com/question/26767532

#SPJ2

The exosphere is the outermost layer of Earth's atmosphere (i.e. the upper limit of the atmosphere). It extends from the exobase, which is located at the top of the thermosphere at an altitude of about 700 km above sea level, to about 10,000 km (6,200 mi; 33,000,000 ft) where it merges into the solar wind.

When you whisper, you produce a 10-dB sound.a. When you speak quietly, your voice sounds twice as loud as a whisper. How many decibels is this?
b. When you speak normally, your voice sounds 4 times as loud as a whisper. How many decibels is this?
c. When you yell, your voice sounds 8 times as loud as a whisper. How many decibels is this?

Answers

All you would do is for a, 10 times 2 is 20 so it would be 20-dB
For b, 10 times 4 is 40 so it would be 40-dB
For c, 10 times 8 is 80 so it would be 80-dB

PLZ HELP!!!75
What is the identity of the atom shown?
A) fluorine
B) neon
C) nitrogen
D) potassium

Answers

9 is the # of protons with is also the # you use to identify the element. It would be A, fluorine.

A fluorine is the answer.

which one would have more gravitational mass? one kilogram of iron dropped from 200 meters height or one kilogram of paper on the ground?

Answers

Neither of those objects has more or less mass than the other has. The mass of an object does not depend on its motion or its location. Mass is Mass. The unit of mass is the kilogram. One kilogram is one kilogram. Their masses are equal.
the piece of paper because gravitational forces between 2 objects depend on the distance between their centre points and the mass, so since they are both the same mass, then the only factor which would determine the force is the distance. The distance between the centre of the earth and the paper is smaller than the iron, so the force would be greaater 

a string is attached to the rear-view mirror of a car. a ball is hanging at the other end of the string. the car is driving around in a circle, at a constant speed. which of the following lists gives all of the forces directly acting on the ball?

Answers

The correct answer for the question that is being presented above is this one: "b. tension, gravity and centripetal force." It gives all of the forces directly acting on the ball.

Here are the following choices:
a. Tension and gravity 
b. tension, gravity and centripetal force 
c. Tension 
d. Tension gravity centripetal force and frictional force

using kepler's 3rd law and newton's law of universal gravitation, find the period of revolution p of the planet as it moves around the sun. assume that the mass of the planet is much smaller than the mass of the sun.

Answers

As we all know that Kepler's third law states the square of the period is proportional to the cube of the average distance. Some of the part of the equation are just mere constants, and they are very vital.

After deriving the equation, we can get the formula.

T = sqrt { 4 * PI^2 /(GM) * [(R1 + R2)/2]^3 } 
Other Questions
How would I calculate the X from a known velocity when launching a ball off a table?
You use a 1200-watt hair dryer for 10 minutes each day. a. How many minutes do you use the hair dryer in a month? (Assume there are 30 days in the month.) b. How many hours do you use the hair dryer in a month? c. What is the power of the hair dryer in kilowatts? d. How many kilowatt-hours of electricity does the hair dryer use in a month? e. If your town charges $0.15/kWh, what is the cost to use the hair dryer for a month?
What two things do you need to know to describe the velocity of an object?
What force is necessary to accelerate a 70-kg object at a rate ifm4.2 m/s