Two carts travel along a horizontal, frictionless track as s…

Two carts travel along a horizontal, frictionless track as shown. The cart (mass m) traveling at speed 5v eventually catches up to, collides with, and sticks to the cart (mass 4m) traveling at speed v. What is their speed after colliding and sticking together?  

A sphere with a volume of 5.00 × 10-7 m3 is dropped to the b…

A sphere with a volume of 5.00 × 10-7 m3 is dropped to the bottom of a graduated cylinder filled with mercury where the pressure is 3.10 × 104 N/m2 greater than at the surface and the sphere volume decreases where the change in volume of the sphere is 2.80 × 10-10 m3.   What is the bulk modulus of the sphere material?

Dave accelerates a box across a smooth friction-less horizon…

Dave accelerates a box across a smooth friction-less horizontal surface over a distance of 15.0 m with a constant 25.0 N force angled at 38.0° above the horizontal. How much work (units: J) does Dave do on the box? NOTE: Watch correct use of rounding and significant figures Enter numerical answer in proper decimal format, not scientific notation Do not enter units with the answer