Asoccer ball is traveling at a velocity of 50 m/s. the kinetic energy of the ball is 500 j. what is the mass of the soccer ball? (formula: ) 0.1 kg 0.2 kg 0.4 kg 0.5 kg

Hey there Fam

the only thing dat brought me here is Soccer ball XD

anyways hahahaha the answer is

C)0.4

thank you

YT

Answer : The mass of the soccer ball is, 0.4 Kg

Explanation : Given,

Kinetic energy  of the ball = 500 J

Velocity of the ball = 50 m/s

Formula used :

where,

K.E = kinetic energy  of the ball

m = mass of the soccer ball

v = velocity of the ball

Now put all the given values in this formula, we get  mass of the soccer ball.

Therefore, the mass of the soccer ball is, 0.4 Kg

calculate how many grams of ammonia can be produced from 4.21 grams of

n2 + 3h2 = 2nh3

my answer:

25.0g n2 x (1 mol/ 28.0gn2) x (2 mol nh3/ 1 mol n2) x (17.0g nh3/ 1 molnh3) = 30.36g n2

25.0g h2 x (1 mol h2/ 2.00g h2) x (2 mol nh3/ 3 mol h2) x (17.0g nh3/ 1 mol nh3) = 141.67g h2

lr = n2

when the volume of gas is   changed from   717.73 ml   to 852 ml   the temperature will   change   from 315   c to 452   c

    calculation

this is calculated using the charles law formula

that is,   v1/t1 = v2/t2

          v1=?

        t1 = 315 c   into   kelvin = 315 +273 = 588 k

        v2 = 852   ml

        t2 = 425c + 273 =698 k

make v1   the subject of the formula ( by   multiplying both side by t1)

  v1=( v2 xt1) / t2

v1= (852 ml   x 588 k)/ 698 k= 717.73 ml