A 4.00-g bullet, traveling horizontally with a velocity of magnitude 400 m/s, is fired into a wooden block with mass 0.650 kg , initially at rest on a level surface. The bullet passes through the block and emerges with its speed reduced to 190 m/s. The block slides a distance of 72.0 cm along the surface from its initial position.
a. What is the coefficient of kinetic friction between block and surface?
b. What is the decrease in kinetic energy of the bullet?
c. What is the kinetic energy of the block at the instant after the bullet passes through it?
Answers: 1
Physics, 21.06.2019 13:30
After an atomic bomb has been dropped, the damage continues to get worse. why is this?
Answers: 1
Physics, 22.06.2019 02:00
Which statements about tornadoes are true? check all that apply. (a) about 12,000 tornadoes hit the united states every year. (b) a tornado looks like a funnel. (c) tornadoes are deadly atmospheric storms that cause millions in damages each year. (d) tornadoes can reach wind speeds of more than 300 miles per hour. (e) kansas is the state with the most tornadoes. (f) you will always notice a funnel before a tornado strikes.
Answers: 2
Physics, 22.06.2019 20:50
In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.
Answers: 3
Physics, 22.06.2019 23:30
Aball of mass 0.3kg is released from rest at a height of 8m.how fast is it going when it hits the ground? accleration due to gravity is g=9.8m/s
Answers: 2
A 4.00-g bullet, traveling horizontally with a velocity of magnitude 400 m/s, is fired into a wooden...
Chemistry, 02.12.2020 23:10
Medicine, 02.12.2020 23:10
Mathematics, 02.12.2020 23:10
Chemistry, 02.12.2020 23:10
Social Studies, 02.12.2020 23:10
Mathematics, 02.12.2020 23:10
Mathematics, 02.12.2020 23:10
Social Studies, 02.12.2020 23:10
Mathematics, 02.12.2020 23:10
Mathematics, 02.12.2020 23:10
English, 02.12.2020 23:10
Mathematics, 02.12.2020 23:10
Geography, 02.12.2020 23:10