Answer:
B)
Explanation:
Because like charges stick because they have sort of an interest in each other
Explanation:
The given statement is absolutely true. this is because magnitude of a vector is always non negative, it can not be zero unless its a zero vector. So, in the given question, final position vector of a moving object has a smaller magnitude than the initial position vector, so, magnitude is neither zero nor negative. Hence, it has a positive magnitude.
Answer: option A.
Explanation:
Q= heat removed from the water
m= mass of the water = 80 grams
c = heat capacity of water= 4.18 J/g°C
Q = -10,032 joules -10,000 Joules
Negative sign indicates that heat was removed from the water
Answer:
500 nm
Explanation:
In this problem, we have a diffraction pattern created by light passing through a diffraction grating.
The formula to find a maximum in the pattern produced by a diffraction grating is the following:
where:
d is the distance between the lines in the grating
is the angle at which the maximum is located
m is the order of the maximum
is the wavelength of the light used
In this problem we have:
is the angle at which is located the 2nd-order bright line, which is the 2nd maximum
n = 5000 lines/cm is the number of lines per centimetre, so the distance between two lines is
Re-arranging the equation for , we find the wavelength of the light used:
Answer:
well people find a hole on the ground and they can see water and that theu build the well around them but the answer is. C
