Answer:
Rusting of iron is slow in desert area because rusting happens when iron articles react with atmospheric oxygen and moisture and produced a substance called rust. in desert areas there is less moisture in air as compared to coastal area therefore rusting is slow.
Answer:
0.0003
Explanation:
In the rules of Sig Figs, all zeros before with decimals are not sigificant. I.E. 0.00000000000000009. Despite how many 0's there are, only the 9 is significant. Zeros before a number is not significant. In 100, only the one is signficant in 100. with a dot at the end, the one and the two zeros are significant. hope this helps.
D:
X: positive
Y: positive
Explanation:
To answer correctly the question, we need to remind the difference between the electric field produced by a positive charge and by a negative charge:
- For a positive charge, the direction of the field lines is away from the charge (because they represent the direction in which a positive test charge would move, if placed in this field)
- For a negative charge, the direction of the field lines is toward the charge (because the positive test charge would move toward the negative charge, if placed in this field)
In the figure, we see that both charges have electric field lines that go away from the charges: therefore, according to the previous statements, they both have to be positive charges.
Answer:
5.3 seconds
Explanation:
Vx = Vx0 + Ax .T
A= de-acceleration
Vx =0 final at rest velocity
Vx0 = initial velocity
T= time to bring the object to a stop
therefore
0 = 52 m/s - (9.8 m/s^2) . T
-52 m/s/ -9.8 m/sec^2 =T
5.3 seconds= T
