All categories

4 years ago

C. length and mass

Physics

2 answers:

vaieri [72.5K]4 years ago

8 0

Answer:

Correct option is (A).

Explanation:

Given data:

Volume, $V = 3 \ cm^{3}$

Mass, $m = 8.1 \ g$

The density of the aluminium can be given as,

$d = \frac{m}{V}$

$d = \frac{8.1 \ g}{3.0 \ cm^{3}}$

$d = 2.7 \ g/cm^{3}.$

Eva8 [605]4 years ago

7 0

Think it would be c, 5.1 g

You might be interested in

The weight of a hydraulic barber's chair with a client is 2100 N. When the barber steps on the input piston with a force of 44 N

guajiro [1.7K]

Answer:

$\frac{r_1}{r_2}=6.9$

Explanation:

According to Pascal's Law, the pressure transmitted from input pedal to the output plunger must be same:

$P_1 = P_2\\\\\frac{F_1}{A_1}=\frac{F_2}{A_2}\\\\\frac{F_1}{F_2}=\frac{A_1}{A_2}\\\\\frac{F_1}{F_2}=\frac{\pi r_1^2}{\pi r_2^2}\\\\\frac{F_1}{F_2}=\frac{r_1^2}{r_2^2}$

where,

F₁ = Load lifted by output plunger = 2100 N

F₂ = Force applied on input piston = 44 N

r₁ = radius of output plunger

r₂ = radius of input piston

Therefore,

$\frac{r_1^2}{r_2^2}=\frac{2100\ N}{44\ N}\\\\\frac{r_1}{r_2}=\sqrt{\frac{2100\ N}{44\ N}} \\\\\frac{r_1}{r_2}=6.9$

4 0

3 years ago

In DC motor, the split rings are made of <br> A) steel B) copper C) wood D) glass

USPshnik [31]

I think is

(B) Copper

8 0

3 years ago

Which will produce a magnetic field?

Yanka [14]

Answer:

a magnet

3 0

3 years ago

A plane rises from take-off and flies at an angle of 5 degrees5° with the horizontal runway. When it has gained 800800 feet, f

dedylja [7]

Answer:

$distance=9188149.567feet$

Explanation:

Given Data

Angle α=5°

height h=800800 feet

To find

Distance r

Solution

As we Know that

$Sin\alpha =(\frac{Perpendicular}{hypotenuse} )\\Sin\alpha =\frac{h}{r}\\ r=\frac{h}{Sin\alpha}\\ r=\frac{800800feet}{Sin(5^{o} )}\\ r=9188149.567feet$

4 0

3 years ago

What is a appropriately?????

telo118 [61]

Answer:

In a way that is suitable or right for a particular situation or occasion: She didn't think we were appropriately dressed for a wedding. Business leaders who acted appropriately were widely praised. See. appropriate.

5 0

2 years ago