Globular clusters are nearly spherical groups of about 10,000 to 1 million stars. A typical galaxy may contain up to a few hundred globular clusters; our galaxy, the Milky Way, has somewhere between 125 and 200 globular clusters orbiting the galactic center.
Answer:
0.87
Explanation:
Given :
Mass of bottle = 29.2 g
Mass when filled with diesel = 116.2 g
Mass when filled with water = 129.2 g
The mass of water = (Mass when filled with water - mass of bottle)
Mass of water = 129.2 - 29.2 = 100 g
Mass of diesel = (Mass when filled with diesel - mass of bottle)
Mass of diesel = 116.2 - 29.2 = 87
Relative density of diesel = mass of diesel / mass of equal volume of water
Relative density = 87 / 100 = 0.87
Answer:
Explanation:
1) First of all, we need to calculate the heat needed to raise the temperature of the block of lead from the initial temperature (25.0 C) to the melting temperature (327.5 C). This heat is given by the equation
where
m = 2.00 kg is the mass of the block
Cpb = 130.0 J/kg*C is the specific heat capacity of lead
is the temperature difference
Substituting,
2) Now we have to calculate the amount of heat needed to completely melt the lead, which is given by:
where
Hj = 2.04x10^4 J/kg is the latent heat of fusion of lead
Substituting,
3) Therefore, the total heat needed is
Answer:
Q = 2.00kg x 130 J/kgC x 302.5C
Q = 7.87 x 10^4j
Q = 2.00kg x 2.04 x 20^4
Q= 4.08 x 10^4
Q = 7.87 x 10^4j + 4.08 x 10^4 = 1.2 x 10^5j
Explanation:
b. chemistry.
c. astronomy.
d. epistemology.
B. slide.
C. slump.
D. flow.
Answer: B, hop that this is helpful.