Answer:
The coefficient of linear expansion of glass flask is 5.33 ×
Explanation:
Please find attach the explanation to the answer and the supposedly complete and appropriate question to the answer given. Thank you.
The 50 W bulb would have a greater current than the 90 W bulb
Answer:
The pressure the hand is less than the pressure on the fingers holding the string
Explanation:
The force with which the archer is pushing against the bow = 120 N
The area on which the force acts on the hand > The area the force acts on the fingers
Pressure = Force/Area
Pressure ∝ 1/Area
The larger the area, the lesser the pressure
The pressure acting on the hand which exerts the force with a larger area is less than the pressure on the finger which exerts the same force on a smaller area
The correct option is therefore;
The pressure the hand is less than the pressure on the fingers holding the string
Answer: M = 42.553· kg
Explanation: A orbit where a body remains traveling around a gravitating mass at constant radius is called Circular Orbit. Although in reality the orbit is more like an ellipse, the circular orbit is a good approximation to the real one.
In that system, it is possible to determine the velocity needed to maintain the orbit. The formula is: v = , where:
v is velocity;
G is the gravitational constant( = 6.67·)
M is the mass of the gravitating mass;
r is the distance between the center of the massive object and the orbiting object;
But, this question is asking for the mass M, so, rearraging:
Transforming light-years in metres and dividing by 2 to find the radius:
r = (15.9.461 x 10¹⁵)· = 70.9575
M =
M = 42.553.kg
The mass of the massive object at the center of the ring is 42.553.kg.