Answer:
B
Explanation:
weight , w= mg where m is the mass of the object (unit is kg ) and g is the gravitational force acting on the object ( unit is m/s^2 )
hope it helps
Filtration of wastewater flowing over a surface of land with vegetation and
water is a biodegradable treatment.
Biodegradable substances are those which can be recycled for other uses
such as manure etc. The filtration of the waste water helps to remove
organic materials and pathogens present in it. The organic materials
removed can then be used for other purposes.
The pathogens are then destroyed to prevent the spread of diseases within
the area. The explanation makes biodegradable treatment most appropriate.
Read more on biodegradable treatment on brainly.com/question/1172912
Half-life means that the matter degrades by 50% at each interval. 48.2 days is 2 intervals.
So, it would go down by 50% in the first interval, making it 50g. Then it would go down by another 50% from there, making the final amount of undecayed thorium-234 25g.
Answer:
Energy is used to break bonds in reactants, and energy is released when new bonds form in products. ... In other chemical reactions, it takes more energy to break bonds in reactants than is released when bonds form in products. These reactions, called endothermic reactions, absorb energy.
Explanation: