PHYSICS HIGH SCHOOL

PLEASE HELP 25 POINTS!!!! Multiply the following numbers and round your answer to the correct number of significant figures: 72,000 x 45

Show both the unrounded and rounded answer.

Answers

Answer 1
Answer:

Answer:

3,240,000

Explanation:

72,000 times 45= 3,240,000

There is no rounded number unless u are dividing.
Answer 2
Answer: Answer:3240000
There is no rounding (dividing)

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A ball of clay sinks when placed in water. The same piece of clay floats if it is made into the shape of a boat.Why does the clay float when made into the shape of a boat? a. The clay is less dense when stretched into the shape of a boat. b. The buoyant force is greater on the clay when it has a spherical shape. c. The boat shape displaces a greater volume of water than the ball shape. d. The weight of the clay boat is less than the weight of the clay ball.
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When the source of a sound is moving it's speed increases

Answers

That statement is false, and pretty meaningless ... we don't know
whether "its speed" refers to the source or the sound.

When the source of a sound is moving relative to the listener, then
the listener may hear a higher- or lower-pitch sound than what the
source is actually emitting.

Answer:

false

Explanation:

Which of the following correctly describes a solenoid? A) The magnetic field around a solenoid is unipolar.
B) The field around a solenoid is termed a bar magnet.
C) A solenoid is created by winding current carrying wire into a coil.
D) Increasing the current in the wires will reduce the magnetic field outside of the solenoid.

Answers

Answer;

C) A solenoid is created by winding current carrying wire into a coil.

Explanation;

-A solenoid is a coil of insulated or enameled wire wound on a rod-shaped form made of solid iron, solid steel, or powdered iron.

-Solenoids have a wide range of applications, for instance they are used as electromagnets, as inductors in electronic circuits, and as miniature wireless receiving antennas.
Option C describes a solenoid

The greater the concentration of sulfur and nitrogen oxides, the higher the pH of precipitation.True
False

Answers

Answer: False

Nitrogen and sulfur dioxide are acidic oxides in nature. The burning of fossil fuels and other sources are responsible for addition of these oxides in the atmosphere of earth. These oxides mixed with water vapor causes acid rain. Being acidic in nature they will have low pH value. Therefore, greater the concentration of sulfur and nitrogen oxides, will lower the pH value of precipitation.

Answer:

False

Explanation:

The ability of solid rock to flow is called _____. convection plasticity seafloor spreading seismology

Answers

The ability of solid rock to flow is called Plasticity.


Plasticity is the deformation of a solid mateial which resulted in non reversible changes of shape in response to applied force.


Another example of plasticity is when you bend metal through a forcer force to create an art or kitchen set


Hope this Helps! Feel Free to mark me the brainliest!

Answer:

The ability of solid rock to flow is called Plasticity.

Explanation:

Plasticity is the deformation of a solid material which resulted in non reversible changes of shape in response to applied force.

What does the fox say

Answers

Answer:

idk

Explanation:

Answer: RING-DING-DING-DING-DING-DING-DING

Explanation:

LOL

Can somebody please explain to me how the acceleration in simple hormonic motion is proportional to the displacement..

Answers

When you graph simple harmonic motion in an acceleration versus displacement graph, the graph at any point would be linear. The graph would also pass through the origin giving proportionality of acceleration to negative displacement. Definition of proportionality neglects the negative value of the displacement so therefore acceleration is proportional to displacement. The acceleration of the motion is always directed towards equilibrium and so at maximum displacement, there would be greatest negative acceleration and vise versa.At the origin, the displacement would be zero and acceleration would also be zero
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