The net force on the larger mass in the horizontal direction (where we take the direction of F to be positive) is
F - T = 2Ma
where T is the magnitude of tension and a is the mass's acceleration.
The net force on the smaller mass in the vertical direction (upward is positive) is
T - Mg = Ma
If M = 1.0 kg and F = 60 N, then we end up with two equations with two unknowns,
60 N - T = (2.0 kg) a
T - (1.0 kg) (9.8 m/s²) = (1.0 kg) a
Eliminate a and solve for T :
(60 N - T) - 2 (T - (1.0 kg) (9.8 m/s²)) = (2.0 kg) a - 2 (1.0 kg) a
60 N - T - 2T + 19.6 N = (2.0 kg) a - (2.0 kg) a
40.4 N - 3T = 0
3T = 40.4 N
T = (40.4 N) / 3
T ≈ 13 N
Answer:
The speed of sound in dry air at 0°C is 331 meters/second
Explanation:
Sound wave is a longitudinal wave. The speed of sound depends on the density and compressibility of the medium. If the density of the medium is less, then it will have faster speed of sound and if the compressibility of the medium is high, it will have slower speed of sound.
It also depends on the temperature. At 20 degrees Celsius, the speed of sound is 343 m/s. At 25 degrees Celsius, its speed is 346 m/s and at 0 degrees Celsius, the speed of sound in dry air is 331.3 m/s
The formula is as follows :

T = 0°C
v = 331.3 m/s
or
v = 331 m/s
So, the correct option is (b) "331 meters/second".
Answer:
I believe it to be option A
Explanation:
Answer:
Explanation:
the spheres cant be electrons as they will repel each other.
so the ans is D. Atoms