Answer:
![B= 4.197*10^-5T](https://tex.z-dn.net/?f=B%3D%204.197%2A10%5E-5T)
Explanation:
We know that the magnetic Field of the Earth is 50\mu T, so the equation for
Hall effect voltage und magnetic field are defined as,
![\Delta V_H = \frac{IB}{nqt}](https://tex.z-dn.net/?f=%5CDelta%20V_H%20%3D%20%5Cfrac%7BIB%7D%7Bnqt%7D)
![B=\frac{nqt\Delta V_h}{I}](https://tex.z-dn.net/?f=B%3D%5Cfrac%7Bnqt%5CDelta%20V_h%7D%7BI%7D)
So,
![B=\frac{(8.48*10^{28})(1.6*10^{-19})(0.0055)(4.5*10^-{12})}{8}](https://tex.z-dn.net/?f=B%3D%5Cfrac%7B%288.48%2A10%5E%7B28%7D%29%281.6%2A10%5E%7B-19%7D%29%280.0055%29%284.5%2A10%5E-%7B12%7D%29%7D%7B8%7D)
![B= 0.00004197](https://tex.z-dn.net/?f=B%3D%200.00004197)
![B= 4.197*10^{-5}T](https://tex.z-dn.net/?f=B%3D%204.197%2A10%5E%7B-5%7DT)
Answer:
Explanation:
The formula for Kinetic Energy is
. Filling in:
It looks like we only need 1 significant digit here but I'll give you 2 and you can round how you want.
KE = 2.4 × 10⁵ J
Answer:
not many things maybe they accomplish one job the machine has been programmed to do.
Explanation:
Answer:
False
Explanation:
The magnitude of any vector is given by,
![||A||=\sqrt{A_x^2+A_y^2}](https://tex.z-dn.net/?f=%7C%7CA%7C%7C%3D%5Csqrt%7BA_x%5E2%2BA_y%5E2%7D)
The magnitude of anything is never negative. It can be even seen from the formula that the components are squared. A squared value can never be negative. Even if the component is negative the square will be always positive.
So, magnitude of the vector is <u>not</u> negative.
Answer:
Final Length = 30 cm
Explanation:
The relationship between the force applied on a string and its stretching length, within the elastic limit, is given by Hooke's Law:
F = kΔx
where,
F = Force applied
k = spring constant
Δx = change in length of spring
First, we find the spring constant of the spring. For this purpose, we have the following data:
F = 50 N
Δx = change in length = 25 cm - 20 cm = 5 cm = 0.05 m
Therefore,
50 N = k(0.05 m)
k = 50 N/0.05 m
k = 1000 N/m
Now, we find the change in its length for F = 100 N:
100 N = (1000 N/m)Δx
Δx = (100 N)/(1000 N/m)
Δx = 0.1 m = 10 cm
but,
Δx = Final Length - Initial Length
10 cm = Final Length - 20 cm
Final Length = 10 cm + 20 cm
<u>Final Length = 30 cm</u>