Answer:
Wg is positive and WT negative.
(Letters in options are all wrongly written).
Explanation:
Remember that the work of a force is the internal product between the force and the displacement 
.
Since the displacement is downwards like the weight, the work done by gravity is positive, while the work done by the tension is negative since it points upwards.
<span>A.
The model of the atom evolved as scientists have made new discoveries.</span>
Answer:
I gonna give you the number so but you need to round 6.19047619048
Explanation:
- This is a speed formula so you would use the formula speed=distance/time
- You need to rearrange it to time=distance/speed
- So you need to divide 13m by 2.1 m/s
Answer:
A. the pancake that forms is a different state of matter.
Explanation:
because the pancake mix is liquid ,and when you cook it you for a solid.
Cell phones may be radioactive.Maybe this is the reason???.
