Atemperature of a 50 kg block increases by 15°c when 337,500 j of thermal energy are added to
the block. (chapter 5 - pages 141-142)
a. what is the specific heat of the object? show the appropriate equation from your book
and show your work with units.
c. what is the block made of? use the chart on page 141.
d. is this block a good material for insulators or conductors?

The a992 steel rod bc has a diameter of 50 mm and is used as a strut to support the beam. determine the maximum intensity w of the uniform distributed load that can be applied to the beam without risk of causing the strut to buckle. take f.s. = 2 against bucklin

Which features on mars point to the possibility of liquid water on the planet? impact craters with sharp rims volcanic cones with craters gullies and stream-like channels mountain ranges with faults

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.