Answer:the final speed is 5.01 m/s
Explanation:
Momentum is the product of mass and velocity.
Cart 1 has a mass of 4.2kg and a speed 5.4 m/s
Cart 2 has a mass of 3.2kg and a speed 4.5 m/s
Total momentum before collision is
m1u1 + m2u2. It becomes
4.2×5.4 + 3.2×4.5 = 22.68 + 14.4
= 37.08kgm/s
The carts stick together after colliding head-on. This means that they move with a common velocity, v. Therefore, Total momentum after collision is (m1 + m2)v. It becomes
(4.2 + 3.2)v = 7.4v
According the the law of conservation of momentum, the total momentum before collision = the total momentum after collision. Therefore,
7.4v = 37.08
v = 37.08/7.4 = 5.01 m/s
It is static electricity. When you rub the balloon and wool, charges cling to the balloon, and when you press the balloon against the wall, the charges start passing to the wall, due to which the balloon sticks there.
Hope you got what you wanted!!!
The question is incomplete, the options are;
RI^2
I^2/R
R/I^2
R/V^2
RV^2
V^2/R
VI
VIR
Select all that apply
Answer:
P=RI^2
P=V^2/R
P=VI
Explanation:
Power is the rate at which energy is changing in a circuit. It is shown by the formulas outlined above from the group of answer choices. Since the current (I), voltage (V), and resistance (R) were mentioned in the question, any of three three formulas could be used to obtain the power drawn by the conductor.
Answer:
wavelength = 497.03 ×
m
Explanation:
given data
diffraction grating = 5 314
separated = 0.488 m
distance = 1.78 m
to find out
wavelength of the laser light
solution
we first find here angle of the first maximum with the center that is
a = ![tan^{-1} \frac{0.488}{1.78}](https://tex.z-dn.net/?f=tan%5E%7B-1%7D%20%5Cfrac%7B0.488%7D%7B1.78%7D)
a = 15.33°
and
grating distance will be =
grating distance g = 1.88 ×
m
so now equation for the wavelength will be
wavelength = g × ![\frac{sin(a)}{n}](https://tex.z-dn.net/?f=%5Cfrac%7Bsin%28a%29%7D%7Bn%7D)
here n = 1
wavelength = g × ![\frac{sin(a)}{n}](https://tex.z-dn.net/?f=%5Cfrac%7Bsin%28a%29%7D%7Bn%7D)
wavelength = 1.88 ×
× ![\frac{sin(15.33)}{1}](https://tex.z-dn.net/?f=%5Cfrac%7Bsin%2815.33%29%7D%7B1%7D)
wavelength = 497.03 ×
m
Please look at the attached awesome drawing.
Both answers are there.