Answer:
B) with 9/10 submerged
Explanation:
= mass of ice cube
= density of soft drink
= Volume of soft drink displaced
ice cube floats in the soft drink when the force of buoyancy on it balances its weight. Force of buoyancy acting on the cube in upward direction is same as the weight of the soft drink displaced. hence we can write
weight of ice cube = weight of soft drink displaced
we see that the acceleration due to gravity cancel out both side and hence it does affect as astronaut is on earth on in a lunar module.
Answer:
<h3>The answer is 2 m/s²</h3>Explanation:
The acceleration of an object given it's mass and the force acting on it can be found by using the formula
where
f is the force
m is the mass
From the question
f = 20 N
m = 10 kg
We have
We have the final answer as
<h3>2 m/s²</h3>Hope this helps you
Answer:
<h2>5 m/s</h2>Explanation:
The average speed of the object can be found by using the formula
d is the distance
t is the time taken
From the question we have
We have the final answer as
<h3>5 m/s</h3>Hope this helps you
Answer: Yes, it can be a single, ordinary star.
Explanation: To determine a mass of a star, we use the orbital speed formula, given by: v = , where
v is the speed;
G is a constant: G = 6.67*
M is mass of a massive object;
R is the distance between the object orbiting and the massive object;
The formula can be rewritten as:
First, we change R from light years to km:
1km=1.057*
R=
Calculating mass:
M =
M = 4.25* kg
A solar mass is the standard unit of mass. It is approximately 2*Kg and can be used for comparison: A single star cannot be more than 50 solar masses.
50 solar masses = 50*2* =
kg
Comparing the mass of the object with this parameter, we have
= 0.235.
= 2.35.
From this, we know that 50 solar masses is greater than the small, massive object found. So, this object can be a single, ordinary star.