e statements are the same for both nuclear reactions and chemical reactions? Check all that apply. Both can be represented by balanced equations. Both involve changes to electron arrangements in atoms. Both involve a change in energy. Both result in a change in the identities of elements.

Answers

Answer 1
Answer:

.  Both can be represented by balanced equations. Both involve changes to electron arrangements in atoms. Both involve a change in energy. Both result in a change in the identities of elements.


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Why are some electromagnetic waves harmful to you but others are not?

Answers

Answer
They have different frequencies. 


Explanations
Some electromagnetic wave have high frequency than others. hose with high frequency are more harmful than those with low frequency. 

Waves with high frequency have a higher penetrating power and they can kill cells if exposed to it. This makes them harmful. 
Because for example a lightning bolt is an electromagnetic wave. Lighting bolts can hurt you or even kill you. But others waves cant harm you.
Hope this helps

Newton's _____ Law states that an object's acceleration is directlyrelated to the net force applied and inversely related to the mass of the object.​

Answers

Answer:

Newton's second Law states that an object's acceleration is directly related to the net force applied and inversely related to the mass of the object.​

Explanation:

Newton's second law states that when force is applied on an object, then it causes acceleration which is directly dependent on the net force applied and varies inversely with the mass of the object.

This law gives us the following equation:

F=ma

where F represents net force applied, m represents mass of the object and a represents acceleration caused.

The above equation can be rearranged to:

a=(F)/(m)

This equation shows that acceleration is directly dependent on net force and inversely dependent on mass of the body.

Answer:

second - apex

Explanation:

The wavelength of sound wave is 30 m. Frequency is 7 Hz. What is the wave speed

Answers

Thewave speed will be 210 m/sec. The wave speed is found as the product of the wavelength and frequency of the wave.

What is wavelength?

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The relationship between the wave's wavelength, time, and speed is given as;

Wavelength = speed of wave / time period

\rm \lambda = (c)/(v) \n\n  \rm 30  = (C)/(7 ) \n\n C= 30 * 7  \n\n C=210 \ m/sec

Hence, the wave speed will be 210 m/sec.

To learn more about the wavelength, refer to the link;

brainly.com/question/7143261

#SPJ2

Answer:23hz

Explanation:

a truck with a mass of 1150 kg and a velocity of 13 m/s collided into a parked car with a mass velocity does the car move forward after the collision

Answers

Answer:

Yes

Explanation:

The truck has momentum since it is moving and momentum is a product of mass and velocity. After impact, part of momentum that the truck had is transferred to the car hence the car initially at rest moves a significant diatance. Here, we utilize the formula MV= (m+M)v where M and V represent mass and velocity of the truck while m is the mass of car, v is the common velocity. Note that some letters are capital while others small, don't confuse these.

Why don't the present shapes of the continents fit perfectly into the supercontinent?

Answers

The reason why the shapes of the continents as of today do not perfectly fi into to super continent because long time ago the super continent was scattered into pieces. And as times go by, those smaller parts of super continents undergo soil erosion caused by the water and other way that causes their original shapes change.  
Thus, if we are going to judge now if those smaller part of super continent, they’re no longer gonna fit perfectly because through time their original form changed




Please need help with this one

Answers

op, here is a list of physical properties. Physical is things you can see.