3 years ago

A sample of gold has a mass of 38.6 grams and a volume of 2 cm3. What is the density of gold?

Physics

1 answer:

raketka [301]3 years ago

7 0

Density is equal to mass divided by volume; that said, you would divide 38.6 by 2 to get your answer

You might be interested in

A 0.8 m length of wire is formed into a single turn, square loop in which there is a current of 12 A. The loop is placed in magn

rewona [7]

Answer:

0.073 N-m

Explanation:

i = 12 A, l = 0.8 m, B = 0.12 T

The circumference of the loop is 0.8 m.

Let r be the radius of the loop.

2 x 3.14 x r = 0.8

r = 0.127 m

Maximum Torque = i x A x B

Maximum Torque = 12 x 3.14 x 0.127 x 0.127 x 0.12 = 0.073 N-m

8 0

4 years ago

A proton of mass 1.67 x 10-27 kg (the charge of a proton is 1.6 x 10-19 C) enters the region between two parallel plates a

Zepler [3.9K]

The answer to the question is 72773

3 0

2 years ago

Two children are riding on the edge of a merry-go-round that has a mass of 100.kg and radius of 1.60m and is rotating at 20.0rpm

Gre4nikov [31]

Here since both children and merry go round is our system and there is no torque acting on this system

So we will use angular momentum conservation in this

$I_1\omega_1 = I_2\omega_2$

now here we have

$I_1 = \frac{MR^2}{2} + m_1R^2 + m_2R^2$

$I_1 = \frac{100(1.60)^2}{2} + (22 + 28)(1.60)^2$

$I_1 = 256$

Now when children come to the position of half radius

then we will have

$I_2 = \frac{MR^2}{2} + m_1(\frac{R}{2})^2 + m_2(\frac{R}{2})^2$

$I_2 = \frac{100(1.6)^2}{2} + (28 + 22)(0.8)^2$

$I_2 = 160$

now from above equation we have

$256 (20.0 rpm) = 160(\omega_2)$

$\omega_2 = 32 rpm$

8 0

3 years ago

read the top corner of picture for directions AWNSER ALL CORECTLY I WILL MAR BRAINLIEST FOR FIRST ANSWER

omeli [17]

Answer:

question

research

hypothesis

experiment

analyze data

conclusion

7 0

3 years ago

Maps are examples of ____ models that people might use everyday.

Anvisha [2.4K]

A. physical
they represent real things except at a much smaller scale so they are relatable to humans.(..)

8 0

3 years ago

Read 2 more answers