A 12.5-g bullet is fired into and embeds itself in a 2.47-kg block attached to a spring with a spring constant of 21.2 N/m and whose mass is negligible. How far is the spring compressed if the bullet has a speed of 268 m/s just before it strikes the block, and the block slides on a frictionless surface? Hint: The collision between the bullet and the block is inelastic. Use conservation of momentum to find the velocity of the block after this collision. Then use conservation of energy to find how far the spring is compressed by the moving block?

The volume of a gas is halved during an adiabatic compression that increases the pressure by a factor of 2.5. what is the specific heat ratio? show the math steps .

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p