Answer:
Explanation:
= Charge at 3000 m = 40 C
= Charge at 1000 m = -40 C
= 3000 m
= 1000 m
k = Coulomb constant =
Electric field due to the charge at 3000 m
Electric field due to the charge at 1000 m
Electric field at the aircraft is .
Answer:
it is hit by an external force
Explanation:
Answer:
gases Z and Y.
Explanation:
Photons are emitted when electrons jump from a higher energy level to lower energy level and these photons carry light energy.
The light emitted at various wavelengths produce emission spectrum, when viewed via a spectroscope.
While analyzing the image, we could see that the spectrum of unknown sample contains the gases Z and Y.
<u>Answers</u>
Question 1
After adding the two numbers together, you will find a number. To determine the number of significant figures, count the digits from right to left. The zeros on the left end and the right end are not significant. The zeros between the non-zero digits are significant.
Question 2
A mete stick is shorter than the student. So by using it, she will be force to take the measurements twice then add then together to get her height. This increases the chances of making errors. To improve the accuracy she should change the measuring instrument and use a tape measure. This will allow her to make only one measurement.
Question 3
Volume = length × width × height
= 105 × 75 × 80.5
= 633,937.5 cm³
In scientific notation;
633,937.5 cm³ = 6.339375 × 10⁵ cm³