Questions from Modern Physics

Q: A crate of mass M starts from rest at the top of

A crate of mass M starts from rest at the top of a frictionless ramp inclined at an angle a above the horizontal. Find its speed at the bottom of the ramp, a distance d from where it started. Do this...

Q: A 5.00-g bullet is fired horizontally into a

A 5.00-g bullet is fired horizontally into a 1.20-kg wooden block resting on a horizontal surface. The coefficient of kinetic friction between block and surface is 0.20. The bullet remains embedded in...

Q: A 12.0-g rifle bullet is fired with a

A 12.0-g rifle bullet is fired with a speed of 380 m/s into a ballistic pendulum with mass 6.00 kg, suspended from a cord 70.0 cm long (see Example 8.8 in Section 8.3). Compute (a) the vertical height...

Q: A 15.0-kg block is attached to a very

A 15.0-kg block is attached to a very light horizontal spring of force constant 500.0 N/m and is resting on a frictionless horizontal table (Fig. E8.44). Suddenly it is struck by a 3.00-kg stone trave...

Q: A 0.800-kg ornament is hanging by a 1

A 0.800-kg ornament is hanging by a 1.50-m wire when the ornament is suddenly hit by a 0.200-kg missile traveling horizontally at 12.0 m/s. The missile embeds itself in the ornament during the collisi...

Q: A 0.150-kg glider is moving to the right

A 0.150-kg glider is moving to the right with a speed of 0.80 m/s on a frictionless, horizontal air track. The glider has a head-on collision with a 0.300-kg glider that is moving to the left with a s...

Q: Blocks A (mass 2.00 kg) and B (

Blocks A (mass 2.00 kg) and B (mass 6.00 kg) move on a frictionless, horizontal surface. Initially, block B is at rest and block A is moving toward it at 2.00 m/s. The blocks are equipped with ideal s...

Q: A 10.0-g marble slides to the left at

A 10.0-g marble slides to the left at a speed of 0.400 m>s on the frictionless, horizontal surface of an icy New York sidewalk and has a head-on, elastic collision with a larger 30.0-g marble slidi...

Q: Canadian nuclear reactors use heavy water moderators in which elastic collisions occur

Canadian nuclear reactors use heavy water moderators in which elastic collisions occur between the neutrons and deuterons of mass 2.0 u (see Example 8.11 in Section 8.4). (a) What is the speed of a ne...

Q: You are at the controls of a particle accelerator, sending a

You are at the controls of a particle accelerator, sending a beam of 1.50 × 107 m/s protons (mass m) at a gas target of an unknown element. Your detector tells you that some protons bounce straight b...