Intramolecular and intermolecular forces hold together which of the following? a. atoms within a molecule b. molecules within an object c. charged particles within a salt crystal d. the atoms within compounds e. all of the above 20 points to correct answer. plz fast

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.