subject
Physics, 14.04.2020 22:27 bommers144

You watch as a firecracker rises high and explodes in an enormous blossom of light, breaking up into many pieces. Which statement(s) accurately describe the conditions immediately before and after the firecracker explodes: I. The total momentum of the fragments is equal to the original momentum of the firecracker. II. The total kinetic energy of the fragments is equal to the original kinetic energy of the firecracker.

ansver
Answers: 3

Another question on Physics

question
Physics, 22.06.2019 02:00
The motor m applies a time-varying force of f (200 t) n, where t is in seconds. box b with mass 200 kg starts from rest, and the coefficients of kinetic and static friction are 0.2 and us 0.3 the acceleration due to gravity is g 9.8 m/s2 b 300 a) find the time ' when the box starts to move. b) calculate the speed of the crate at 3 s c) calculate the power delivered by the motor at t 3 s
Answers: 3
question
Physics, 22.06.2019 04:10
Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward
Answers: 3
question
Physics, 22.06.2019 12:00
Under the action of a constant force an object accelerates at 7.8 m/s2. what will the acceleration be if (a) the force is halved? (b) the object's mass is halved? (c) the force and the object's mass are both halved? (d) the force is halved and the object's mass is doubled?
Answers: 3
question
Physics, 23.06.2019 01:00
Why do metals "give up" their valence electrons?
Answers: 2
You know the right answer?
You watch as a firecracker rises high and explodes in an enormous blossom of light, breaking up into...
Questions
question
Computers and Technology, 20.01.2021 22:10
question
Mathematics, 20.01.2021 22:10
question
Mathematics, 20.01.2021 22:10
question
Mathematics, 20.01.2021 22:10
question
Mathematics, 20.01.2021 22:10
question
English, 20.01.2021 22:10
question
Spanish, 20.01.2021 22:10
Questions on the website: 13722367