A student is pushing a 35 kg desk across a floor at a constant speed of 4 m/s. How much work, to the nearest whole joule, must the student do on the desk to change the speed to
6 m/s?

Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg

Because light travels in a straight line and casts a shadow, isaac newton hypothesized that light is

A2.00-m long piano wire with a mass per unit length of 12.0 g/m is under a tension of 8.00 kn. what is the frequency of the fundamental mode of vibration of this wire?