The correct answer is
<span>Density
In fact, the density of an object is the ratio between its mass m and its volume V:
</span>
<span>if the size of the object changes, its volume V changes as well, therefore the density d must change.</span>
Answer:
I think it may be either A. or C.
Explanation:
<span>345/115=3
3*24=72
the answer is B. 72 </span>
Answer:
5 J
Explanation:
F = spring force required to stretch the spring = 10 N
x = stretch in the spring = 1 m
k = spring constant of the spring
Spring force is given as
F = k x
Inserting the values
10 = k (1)
k = 10 N/m
W = work done in stretching the spring
Work done is given as
W = (0.5)k x²
Inserting the values
W = (0.5) (10) (1)²
W = 5 J
Answer:
x = 4.5 m, 5.75 m, 6.5 m, 8.25 m
Explanation:
= frequency of radio transmitting station = 120 MHz = 120 x 10⁶ Hz
= speed of the radio wave = 3 x 10⁸ ms⁻¹
= wavelength
Wavelength is given as
= distance between the two antennas = 9.00 m
= Distance of point P from the antenna A
= Distance of point P from the antenna B
= Path difference
Path difference is given as
For constructive interference, Path difference is given as
For n = 0
For n = 1
For n = 2
For n = 3
