Physics, 26.02.2021 16:40 Zayybabii

What type of change happens when the powder inside a firework is burned? A. Freezing occurs from a chemical change.
B. Light is produced by a chemical change.
C. Rotting occurs from a chemical change.
D. Rust is produced by a chemical change.

Answers: 2

Show answers

Another question on Physics

Physics, 22.06.2019 09:30

Which of these is not a possible type of energy transformation? a. electrical energy into light energy b. sound energy into nuclear energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Answers: 1

Answer

Physics, 22.06.2019 18:30

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.

Answers: 1

Answer

Physics, 22.06.2019 20:30

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?

Answers: 2

Answer

Physics, 22.06.2019 22:10

7. see worksheet 1 for values of variables x1, x2 and x3 and answer the following questions: a. for each variable find the mean, median, coefficient of skewness, range and population standard deviation. b. compared to variable x1, how are the mean and median affected by extreme values (outliers) seen in x2 and x3. c. is the median or mean the better measure of location for x2 and x3? explain. d. explain the differences in the magnitudes of the skewness coefficients for the three variables. e. what is the relationship between the range and standard deviation looking across the three variables?

Answers: 1

Answer

You know the right answer?

What type of change happens when the powder inside a firework is burned? A. Freezing occurs from a...

Questions