Heat is transferred from your body into an ice cube by

radiation

conduction

convection

refraction


question 3 (multiple choice worth 3 points)

the loudness of a sound will be determined by the wave’s

pitch

frequency

wavelength



question 4 (multiple choice worth 3 points)

the speed of a sound wave

is slower than an electromagnetic wave

is faster than a electromagnetic wave

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 740 n/m. it is initially at rest on an inclined plane that is at an angle of theta= 26 with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is uk = 0.17. in the initial position, where the spring is compressed by a distance of d = 0.16 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. the block's initial mechanical energy is 9.472 j.b. if the spring pushes the block up the incline, what distance l in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.