Suppose you push a hockey puck of mass mm across frictionless ice for a time ΔtΔt, starting from rest, giving the puck speed vv after traveling distance dd. If you repeat the experiment with a puck of mass 2mm, 1. How long will you have to push for the puck to reach the samespeed v?t/ (delta t) = ? 2.How long will you have to push for the puck to travel the samedistance d?t/ (delta t) = ?

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

The force it would take to accelerate an 900-kg car at the rate of 6m/s2

Which of the following statements comparing electron microscopy and light microscopy is false? which of the following statements comparing electron microscopy and light microscopy is false? both the electron microscope and the light microscope use the same wavelengths for illumination. images produced by light microscopes can be in color, whereas electron microscope images are black and white unless they are artificially colored. the electron microscope has greater resolution than the light microscope. electron microscopes can allow examination of viruses and internal cell structures, whereas light microscopes are limited to objects that are 0.5 micrometers and larger. request answer