Water is different from other substances because: a it is more dense as a solid than a liquidb it is less dense as a solid than liquidc it is more dense as a gas than a liquidd it is less dense as a solid than a gas
Solved
Show answers
More tips
- H Health and Medicine 5 Simple Steps to Quit Smoking for Good...
- C Computers and Internet How to Download Videos from YouTube? Simple Steps to Download Any Content...
- H Health and Medicine What is the Normal Blood Sugar Level in a Healthy Person?...
- S Style and Beauty How to Get Rid of Acne: Scientifically Proven Methods...
- L Leisure and Entertainment How to Choose the Perfect Gift for Men on February 23rd?...
- C Computers and Internet How to Delete Your Account on Odnoklassniki...
- H Health and Medicine 10 Simple and Effective Tips on How to Lose Weight in a Week...
- F Food and Cooking What s the Best Rice for Cooking Plov?...
- F Family and Home How to Get Rid of Your Neighbors?...
- S Society and Politics Secrets of NATO: Which Countries are Part of the Alliance?...
Answers on questions: Physics
- P Physics Can the hubble space telescope resolve the two stars?...
- P Physics in example 21.17 in the textbook, if the dielectric constant of the slab that is slid between the plates of the capacitor had been 5 rather than 3.3, what would have been the final...
- P Physics In psychology Concepts refer to:...
- P Physics An internal explosion breaks an object initially at rest into two pieces ,one of which has 1.5 times the mass of the other.If 5500j is released in the explosion,how much kinetic...
- P Physics ASAP pls answer right I will mark brainiest . All I know is 4. Is A...
- P Physics In a homogeneous mixture, the ingredient substances are?...
- P Physics If a substance can not be separated physically or chemically it is...
- P Physics Can i get some help plz...
- P Physics DUE RIGHT NOW IT WOULD BE NICE IF YOU EXPLAIN TO...
- P Physics A student weighing 5.4 × 102 newtons takes 15 seconds to run up a hill. The top of the hill is 10 meters vertically above her starting point. What power does the student develop...
Ответ:
Ответ:
the change in kinetic energy of the system is 0.577 J
Explanation:
Given;
mass of the bullet, m₁ = 6.25 g = 0.00625 kg
initial velocity of the bullet, u₁ = 365 m/s
mass of the crate, m₂ = 4.5 kg
initial velocity of the crate, u₂ = 0
distance moved by the system after collision, d = 0.15 m
Determine the final velocity of the system after collision;
m₁u₁ + m₂u₂ = v (m₁ + m₂)
0.00625 x 365 + 4.5 x 0 = v(0.00625 + 4.5)
2.2813 + 0 = v(4.5063)
2.2813 = v(4.5063)
v = 2.2813 / 4.5063
v = 0.506 m/s
The change in kinetic energy of the system after collision is calculated as;
ΔK.E = ¹/₂ (m₁ + m₂)v²
ΔK.E = ¹/₂ (4.506) x 0.506²
ΔK.E = 0.577 J
Therefore, the change in kinetic energy of the system is 0.577 J