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3 years ago

Does density depend on the amount of substance that you have? Explain your answer.

Physics

1 answer:

saul85 [17]3 years ago

3 0

Answer:

No Density does not depend on the amount of substance you have because density is the ratio of mass and volume in an object

Explanation:

ROCK AND ROLL!!

~Monty

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An object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. The heavie

Arte-miy333 [17]

Answer:

the distance d traveled by the lighter fragment is 58.1 m.

Explanation:

mass of the lighter fragment = m

the lighter fragment traveled a distance = ?

mass of the heavier fragment = 7m

the distance covered by the heavier fragment = 8.30 m

The two particles will be given the same amount of energy from the explosion. This energy is used to do work by the two fragments.

work done by heavier fragment w = mgd

where m is the mass

g is acceleration due to gravity

d is the distance traveled.

substituting, the work done by the heavier fragment is

w = 7m x g x 8.3 = 58.1mg

The same way, the lighter fragment does work of

w = mgd

equating the two work done since they are given the same amount of energy from the explosion, we have

58.1mg = mgd

mg cancels out, we have

the distance d traveled by the lighter fragment d = 58.1 m

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3 years ago

To reduce auto emissions in the United States, modifications to automobile engines have been required since the 1960s.

natali 33 [55]

Answer:

True

Explanation:

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2 years ago

Which of the following changes will always increase the efficiency of a thermodynamic engine? Choose all correct statements.

Ilya [14]

Answer:B,C,D

Explanation:

Thermodynamic efficiency is given by

$\eta =1-\frac{T_C}{T-H}$

$\eta$ efficiency can be increased by Keeping $_c$ constant and increasing $T_H$

Keeping $T_H$ constant and decreasing $T_c$

by increasing $\Delta T=T_H-T_c$

by decreasing $\frac{T_C}{T_H}$ ratio

5 0

4 years ago

Read 2 more answers

What are the factor that affect gravity

valentinak56 [21]

Explanation:

The factors that affect gravity are as follows:

1. mass of body

2. acceleration

Keep smiling and hope u are satisfied with my answer.Have a good day :)

6 0

3 years ago

A string attached to an airborne kite is maintained at an angle of 41 degrees with the horizontal. If a total of 152 m of string

satela [25.4K]

Answer:

The horizontal displacement is $Adj = 114.71 \ m$

Explanation:

From the question we are told that

The angle at which the string is maintained is $\theta = 41 ^o$

The length of string reeled in is $l = 152 \ m$

Using the SOHCAHTOA formula

We have that the hypotenuse(Hyp) is l = 152

Hence the horizontal displacement of the kite which is the Adjacent(Adj) can be evaluated as

$cos \theta = \frac{Adj}{Hyp }$

substituting values

$cos(41) = \frac{Adj}{152}$

=> $Adj = 114.71 \ m$

3 0

3 years ago