Answer:
OPTION A, Kelvin Thermometer is Incorrect
Explanation:
Now, if you consider best two out of three results, then celsius and Fahrenheit thermometers read the same value, meaning both are right.
1) K = °C + 273
K = 100°C + 273
k = 373°C
Kelvin Thermometer is Incorrect
2) ![C = \frac{F - 32}{1.8}](https://tex.z-dn.net/?f=C%20%3D%20%5Cfrac%7BF%20-%2032%7D%7B1.8%7D)
when we have 212°F
![C = \frac{212 - 32}{1.8} \\\\= 100^\circ C](https://tex.z-dn.net/?f=C%20%3D%20%5Cfrac%7B212%20-%2032%7D%7B1.8%7D%20%5C%5C%5C%5C%3D%20100%5E%5Ccirc%20C)
which is correct
The boy's momentum is 160 kg*m/s north.
The formula of momentum is p = mv, where p is momentum.
p = 40 kg * 4m/s north
p =160 kg*m/s north<span>Thank you for posting your question. I hope you found what you were after. Please feel free to ask me more.</span>
Answer:
(b) EAST
Explanation:
you can assume that the magnetic field points rightward, that is, in the positive x direction (NORTH). Furthermore, you can assume that the direction of the motion of the electron is in the positive y direction. Hence, you have:
![\vec{B}=B_o\hat{i}\\\\\vec{v}=v_o\hat{j}](https://tex.z-dn.net/?f=%5Cvec%7BB%7D%3DB_o%5Chat%7Bi%7D%5C%5C%5C%5C%5Cvec%7Bv%7D%3Dv_o%5Chat%7Bj%7D)
You use the Lorentz formula to known which is the direction of the magnetic force over the electron:
![F=qv\ X\ B](https://tex.z-dn.net/?f=F%3Dqv%5C%20X%5C%20B)
which implies the cross product between the unitary vecors j and i, that is
(WEST)
However, the minus sign of the charge of the electron changes the direction 180°. Hence, the direction is k. That is, to the EAST
Dipper effect of an oncoming train get louder as it approaches and sound diminishes as it goes away sound traveling