Ch10 E7. How much heat must<span> be </span>removed<span> from a </span>200-g block<span> of </span>copper<span> to </span>lower its temperature<span> from </span>150ºC<span> to </span>30ºC<span>? The </span>specific heat capacity<span> of </span>copper<span> is </span>0.093 cal<span>/g! ... The </span>specific heat<span>, </span>C<span>, of a substance is defined as the </span>heat<span> in calories required to raise the ... </span>temperature<span> of a unit mass of that substance by 1 </span>degree<span> .</span>
Explanation:
Let the distance covered by the body be s, initial and final velocities be u and v respectively and time taken be t.
By first equation of motion:
Substituting the value of v in equation (1), we find:
Hence proved.
the independent variables are the different
laudry detergent
the dependent variable is color of the cloth
after washing
the control variables are the amount of water
added and by washing one cloth b just water
<span>hypothesis: the cloth washed with laundry
detergent is cleaner than the cloth that is just washed by water. </span>
Answer:
Speed in km/hr will be 109.412 km/hr
Explanation:
We have given speed of the car on a highway = 68 mi/hr
We have to find the speed in km/hr
For this first we have to change mi to km
We know that 1 mile = 1.609 km
Speed is the ratio of distance and time
So 68 mi/hr
So the speed in km/hr will be 109.412 km /hr