1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
IceJOKER [234]
3 years ago
12

What is the mass of a magnesium block that measures 2.5cm x 3.5cm x 1.5cm?

Physics
2 answers:
lukranit [14]3 years ago
4 0

Answer: 22.8 g


Explanation:


1) density = mass / volume ⇒ mass = density × volume


2) density of magnesium = 1.74 g/cm³ (from internet)


3) volume of a block = length × width × depth

  volume of the magnesium block = 2.5cm × 3.5 cm × 1.5 cm = 13.125 cm³


4) mass of the magnesium block = 1.74 g/cm³ × 13.125 cm³ = 22.8375 g.


Rounding to 3 significant figures, mass = 22.8 g ← answer

antiseptic1488 [7]3 years ago
3 0

The mass of the magnesium block is found to be <u> 22.8 g.</u>

Density of a substance is defined as mass per unit volume.

Calculate the volume V of the magnesium block using the dimensions given in the problem.

V=(2.5cm)(3.5cm)(1.5cm)\\ =13.125cm^3

Magnesium has a density ρ of 1.74g/cm³. This can be taken from the standard tables.

Since density is mass per unit volume,

\rho=\frac{m}{V}

The mass of the block is therefore given by,

m=\rho V

Substitute  1.74g/cm³for  ρ and 13.125 cm³for V.

m=\rho V=(1.74g/cm^3)(13.125cm^3)=22.8375g

The mass of the magnesium block is found to be <u> 22.8 g.</u>

You might be interested in
WILL GIVE BRAINLIEST! QUICK PLEASE HELP!!!
Fantom [35]

Answer:

mass and location

Explanation:

edgenuity test 100%

4 0
3 years ago
The temperature and pressure at the surface of Mars during a Martian spring day were determined to be -41 oC and 900 Pa, respect
Fittoniya [83]

Answer:

Part a)

\rho = 0.0205 kg/m^3

Part b)

\rho = 1.22 kg/m^3

So density of atmosphere at Martian Surface is very less than the density at Earth.

Explanation:

Part a)

As per ideal gas equation we know that

PM = \rho RT

here we know that Martian atmosphere is equivalent to that of carbon

so we will have

P = 900 Pa

T = 273 - 41 = 232 K

now we will have

(900)(0.044) = \rho (8.31)(232)

\rho = 0.0205 kg/m^3

Part b)

Now for the earth surface the density of air is given for

P = 101.6 kPa

T = 18 ^oC

so we will have

PM = \rho RT

(101.6\times 10^3)(0.029) = \rho(8.31)(273 + 18)

\rho = 1.22 kg/m^3

So density of atmosphere at Martian Surface is very less than the density at Earth.

8 0
2 years ago
The name of a sedimentary rock is usually based on:
tigry1 [53]

Answer:

C

Explanation:

The name of the rock is usually derived from the sediment grain size.

4 0
3 years ago
Two slits are illuminated with green light (λ = 540 nm). The slits are 0.05 mm apart and the distance to the screen is 1.5 m. At
zhenek [66]

Answer:

0.21486 mm

Explanation:

The formula for the maximum intensity is given by;

I = I_o•cos²(Φ/2)

Now,we are not given Φ but it can be expressed in terms of what we are given as; Φ = πdy/(λL)

Where;

y is the distance from the central maximum

d is the distance between the slits

λ is the wavelength

L is the distance to the screen

Thus;

I = I_o•πdy/(λL)

We are given;

d = 0.05 mm = 0.5 × 10^(-3) m

λ = 540 nm = 540 × 10^(-9) m

L = 1.25 m

I/I_o = 50% = 0.5

From earlier, we saw that;

I = I_o•πdy/(λL)

We have I/I_o = 0.5

Thus;

I/I_o = πdy/(λL)

Plugging in the relevant values;

0.5 = (π × 0.5 × 10^(-3) × y)/(540 × 10^(-9) × 1.25)

Making y the subject, we have;

y = (0.5 × 540 × 10^(-9) × 1.25)/(π × 0.5 × 10^(-3))

y = 0.00021486 m

Converting to mm, we have;

y = 0.21486 mm

7 0
3 years ago
A trip is taken that passes through the following points in order
AURORKA [14]

Answer:

15? I actually don't know

3 0
3 years ago
Other questions:
  • Why does the cyclist have less kinetic energy at position A than at position B?
    6·1 answer
  • If the velocity of an object changes from 15 m/s to 50 m/s during a time interval of 4 s, what is the acceleration of the object
    13·1 answer
  • If red and yellow paint are mixed together, which color of light will be reflected?
    9·2 answers
  • Please answer this question
    9·2 answers
  • Compare positive and negative feedback mechanisms.
    5·2 answers
  • Identify whether the features and functions belong to the Hubble Space Telescope or the ALMA radio telescope. 1.installed on lan
    11·2 answers
  • NEED ANSWER FAST!!! Worth 15 points
    14·2 answers
  • What is the velocity of a rocket if it travels a distance of 2400 m in 3 s?
    11·1 answer
  • You and your partner want to investigate how the mass of various sports balls will impact their force as they accelerate down a
    15·1 answer
  • Find the reaction supports at Ta and TB as shown in the loaded beam.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!