For projectile motion on level ground assuming negligible air resistance (the initial angle being neither 0o nor 90o): can the speed ever be the same as the initial speed at a time other than at t = 0 ?

a. no

b. yes, at the end of the arch (end of trajectory)

c. yes, at its maximum height

d. yes, at half of its maximum height

Ahollow metal sphere has 6 cm and 11 cm inner and outer radii, respectively. the surface charge density on the inside surface is −100nc/m2. the surface charge density on the exterior surface is:

Pl asaaap ! match the term to the correct description. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. movement that is like a t transfers energy from one location to another 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave

Which accounts for an increase in the temperature of a gas that is kept a constant volume