Explanation:
The given data is as follows.
mass = 227.8 kg, volume = 0.1189
It is known that formula for volume of a sphere is and density is as follows.
Density = ........ (1)
=
= 1915.895
Hence, putting the given values into equation (1) as follows.
Density =
1915.895 =
= 227.8
r = 0.305
Thus, we can conclude that radius of the sphere is 0.305 .
Answer:
2.726472 s more or 1.5874 times more time is taken than 10-lb roast.
Explanation:
Given:
- The cooking time t is related the mass of food m by:
t = m^(2/3)
- Mass of roast 1 m_1 = 20 lb
- Mass of roast 2 m_2 = 10 lb
Find:
how much longer does a 20-lb roast take than a 10-lb roast?
Solution:
- Compute the times for individual roasts using the given relation:
t_1 = (20)^(2/3) = 7.36806 s
t_2 = (10)^(2/3) = 4.641588 s
- Now take a ration of t_1 to t_2, to see how many times more time is taken by massive roast:
t_1 / t_2 = (20 / 10)^(2/3)
- Compute: t_1 / t_2 = 2^(2/3) = 1.5874 s
- Hence, a 20-lb roast takes 1.5874 times more seconds than 10- lb roast.
t_2 - t_1 = 2.726472 s more
Answer:
when there is uniform velocity the acceleration of a body is zero
1). The sound "barrier" is a shock wave that builds up in whatever material the object is traveling through. The object has to push air out of the way to let it through, but the air can't move out of the way any faster than the speed of sound.
Light isn't traveling through any material, and it doesn't need to push air out of the way to let it through.
2). The sound "barrier" shock wave forms as the moving object builds up closer and closer to the speed of sound. Light never travels slower than the speed of sound, so it never builds up closer and closer to the speed of sound.
Answer:
The black cow takes in more of the sun than the white cow does. It absorbs the heat faster.
Explanation: