Answer:
Explanation:
Resolving power of telescope
= 1.22 λ / D radian
D is diameter of telescope and λ is wave length of light
This resolving power is in radian
required R .P = 5 / 384000
So
1.22 λ / D = 5 / 384000
D = (1.22 λ x 384000) / 5
= 93696 x λ
= 93696 x 550 x 10⁻⁹
= .0515 m
5.15 cm
WhG exactly are you asking question mark
Answer:
300 K
37.5 K
Explanation:
= Boltzmann constant =
T = Absolute temperature
= Mass of Helium atom = 4 u
= Mass of Oxygen atom = 32 u
The kinetic energy of a gas is given by
So, the temperature would be 300 K
RMS velocity is given by
The gas temperature is 37.5 K
Refer to the figure shown below.
Let m₁ and m₂ e the two masses.
Let a = the acceleration.
Let T = tension over the frictionless pulley.
Write the equations of motion.
m₂g - T = m₂a (1)
T - m₁g = m₁a (2)
Add equations (1) and (2).
m₂g - T + T - m₁g = (m₁ + m₂)a
(m₂ - m₁)g = (m₁ + m₂)a
Divide through by m₁.
(m₂/m₁ - 1)g = (1 + m₂/m₁)a
Define r = m₂/m₁ as the ratio of the two masses. Then
(r - 1)g = (1 +r)a
r(g-a) = a + g
r = (g - a)/(g + a)
With = 2 ft/s from rest, the acceleration is
a = 2/32.2 = 0.062 ft/s²
Therefore
r = (32.2 - 0.062)/(32.2 + 0.062) = 0.9962
Answer:
The ratio of masses is 0.9962 (heavier mass divided by the lighter mass).
Explanation:
a)
where is the distance of the mass from the axis of rotation. When the axis of rotation is placed at the end of the rod, the moment of inertia is due only to one mass. Therefore,
b) When the axis of rotation is placed on the center of the rod, the moment is due to both masses and the radius r is 1.5 m. Therefore,