3 years ago

Visible light waves are ______ waves A.mechanical B.electromagnetic

Physics

1 answer:

motikmotik3 years ago

4 0

B.Electromagnetic
explanation:

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A car moving with a velocity of 20 meters/second has 1.8 × 105 joules of kinetic energy. What is the mass of the car?

PSYCHO15rus [73]

V = 20 m/s
Ecin = 1.8 x 10^5 J

Ecin = m*v^2/ 2
1.8*10^5 = m*400/2
200m = 1.8*10^5

I know you can do it :)

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3 years ago

Write a program that calculates the average of n integers. the program should prompt the user to enter the value for n and then

ikadub [295]

#include<studio.h>

int main( )

{

int n;

int a,b,c,d,x,y;

int avarage;

printf("enter value of n:\n");

scanf("%d",&n);

printf("enter value of a:\n,b:\n,c:\n,d:\n,x:\n,y:\n);

scan f("%d\%d\n%d\n%d\n%d\n%d\n",&a,b,c,d,x,y);

sum=(a+b+c+d+x+y);

avarage=(sum/n);

print f("%d",avarage);

{

n=positive interger

}

else

{

printf ("n must be positive");

}

return 0;

}

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3 years ago

What is the name of the variable that you can change in an experiment?

Schach [20]

That would be the independent variable.

Dependent variable changes according to the independent variable

I honestly don’t know about graphing and stable variables never heard of it before

7 0

3 years ago

Read 2 more answers

the velocity of a car traveling in the positive direction decreases from 32 m/s to 24 m/s in 4 seconds. what is the average acce

anastassius [24]

Answer:

$a=-2m/sec^2$

Negative sign shows that velocity of the car is decreases at a constant rate

Explanation:

We have given velocity of the car is decreases from 32 m /sec to 24 m/sec in 4 second

So initial velocity of the car u = 32 m /sec

And finally car reaches to a velocity of 24 m/sec

Time taken to change in velocity = 4 sec

So final velocity v = 24 m/sec

From first equation of motion v = u+at

So $24=32+a\times 4$

$a=-2m/sec^2$

Negative sign shows that velocity of the car is decreases at a constant rate

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3 years ago

A bike is moving at a velocity of 50 m/s. It increases in velocity until it reaches 150 m/s in seconds. What is the acceleration

Lunna [17]

Answer:

100

Explanation:

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3 years ago