1. Suppose you have a metal bar. Its mass is 57.9g and its volume is 3cm'. What is its
density?

Answers

Answer 1

¡Hellow!

How we know, for calculate density, we can use the formule:

                                               [tex]\boxed{\textbf{p = m / v} }[/tex]

Where:

[tex]\sqrt{[/tex] p = Density = ?

[tex]\sqrt{[/tex] m = Mass = 57,9 g

[tex]\sqrt{[/tex] v = Volume = 3 cm³

Let's replace according we information:

p = 57,9 g / 3 cm³

p = 19,3 g/cm³

The density of the metal bar is 19,3 g/cm³.

¿Good luck?


Related Questions

which graph best demonstrates the general relationship between mass and temperature similar to the trend of thermal energy absorbed by your sand and water samples

Answers

Answer: the first one

Explanation: got it right on edg

Answer:

The first graph

Explanation:

Correct on Edge 2022! :]

8. Using Newton's second law, solve the following problems using
GFFS.
a. A force of 35N is applied to a 25kg object, what is its
acceleration??
b. What force is required to accelerate a 14kg object at 4.5
m/s2?
c. Calculate the mass of an object that accelerated at a rate of
2.7 m/s2 by a force of 18N.

Answers

Answer:

a) 1.4 m/s2

b) 63N

c) 6.66kg

Jack is buying a subscription to a magazine club. The function c=45+3.75m
c
=
45
+
3
.
75
m
describes the cost of the yearly subscription, c
c
, in terms of the number of magazines, m
m
, he orders.

What is the appropriate domain for the function?


the set of integers

the set of whole numbers

the set of all real numbers

the set of rational numbers

Answers

Answer:

the set of all real numbers

Explanation:

Given the cost of the magazine expressed as:

c=45+3.75m where:

c describes the cost of the yearly subscription.

m is the amount of order.

You must understand that domain are the values of the input variable m that will make the function exist.

The value of m that will produce a positive output since we can only have a positive value of the cost. According to the option, we can say that the domain is on the set of all real numbers (some are negative but all positive real numbers)

Which pair of factors affects the force of gravity between objects?

direction and distance

mass and distance

mass and shape

shape and time

Answers

Answer:

mass and distance

Explanation:

dont need to summary this

Answer:

B. mass and distance

Explanation:

a horse was at rest.what was the final velocity of the horse if it covered 200 meters in 16 seconds?

Answers

Answer:

12.5m/s

Explanation:

Simplify the proportion.

200/16 = 100/8 = 50/4 = 25/2 = 12.5

What is the final velocity if you have an initial velocity of 4 m/s with an acceleration of 2 m/s2 over 5 second interval interval

Answers

Answer:

14m/s

Explanation:

A 70 kg student is riding on a skateboard at 4m/s. A 60 kg student is also riding a
skateboard at 4 m/s. Which statement below demonstrates an understanding of
Newton's 1st Law of Motion?
A. Since both students are traveling at the same speed they must have the same
inertia
B. Since both students are traveling at the same speed they must have the same
mass
C. One student has more mass and therefore more inertia

Answers

Answer is C, one student has more mass, therefore more inertia.

What is the main difference between the atoms in a solid versus atoms in a 1 point
liquid?

Answers

Answer:

Atoms in a solid are close and tightly packed.They vibrate about fixed positions .They are arranged in a regular LATTICE.They cannot be compressed nor can they change shape.They have strong forces of attraction between them so they cannot move in order to move they have to gain ENERGY. Whereas the atoms in a liquid are not that close compared to the ones in solid.They take the shape of the container but their volume remains fixed.They have weak forces of attraction between atoms and have more energy which enables them to move.

Explanation:


A baseball's resultant velocity is 25.79 m/s, at 68.64° from the level ground.
Determine the vertical component of the baseball's velocity.

Answers

Answer:

Vy = 24.01 [m/s]

Explanation:

To solve this problem we must understand that velocity is a vector and therefore has magnitude and direction, in this way we can decompose the velocity in the components x & y, by means of the trigonometric functions of the sine and cosine of the angle.

For the vertical component, the sine of the angle is used.

Vy = 25.79*sin(68.64)

Vy = 24.01 [m/s]

the graph below represents the relationship between velocity and time for an object moving along a straight line.

What is the magnitude of the object's acceleration?

1. 5.0 m/s^2

2. 8.0 m/s^2

3. 10. m/s^2

4. 20. m/s^2​

Answers

Answer:

10. m/s^2

Explanation:

40-(-10)= 50

50/5 =10

This question can simply be answered by using the slope of the velocity-time graph.

The correct answer for the magnitude of the acceleration is "3. 10 m/s²".

Since the graph between the velocity and the time is in the form of a straight line. Hence, the acceleration can be calculated as the slope of this line. We will use the first and last point of the line to calculate the slope (acceleration):

[tex]Acceleration = Slope = \frac{v_2 - v_1}{t_2-t_1}[/tex]

where,

v₁ = initial velocity from the graph = - 10 m/s

v₂ = final velocity from the graph = 40 m/s

t₁ = initial time from the graph = 0 s

t₂ = final time from the graph = 5 s

Therefore,

[tex]Acceleration = \frac{40\ m/s\ -\ (-\ 10\ m/s)}{5\ s\ -\ 0\ s}[/tex]

Acceleration = 10 m/s²

The attached picture shows the types of a velocity-time graph.

Learn more about the velocity-time graph here:

https://brainly.com/question/11290682?referrer=searchResults

A series RLC circuit contains a 1,000 resistor, a 240 mH inductor, and a 0.04 uF capacitor. What is the circuit's resonant frequency?
A. 12,684 Hz
B. 48,194 Hz
C.51,393 Hz
D. 16.244 Hz

Answers

Husband is a little too bad

A large mining dump truck has a mass of 40,000 kg. If its engine produces
20,000N of force, how fast will the truck accelerate?

Answers

Answer:

0.5 m/s²

Explanation:

Net force = mass × acceleration

∑F = ma

20,000 N = (40,000 kg) a

a = 0.5 m/s²

Answer:

which one will not start moving faster

Explanation:

Mass is also described by physics. If you apply the same amount of force to a small sports car and to a big garbage truck.

when electric and _______ fields both exist, it is called an electromagentic

Answers

Answer:

the answer is magnetic

A force of 1000N is applied to push
a mass of 500kg. How quickly does
it accelerate?

Answers

Answer:

Explanation: use f= ma

we get 1000 ÷ 500 = a

∴ a = 2 m/s²

When a mass of 500 Kg with the force 1000N, the acceleration produced is equal to 2m/s².

What is Newton's second law of motion?

According to Newton’s second law of motion, the force equals the mass of the object times acceleration when the object has constant mass.

This law states that acceleration depends on two variables. The first variable is the mass and the net force acting on the body. The acceleration is directly proportional to the net force acting and inversely proportional to the mass.

Newton’s second law can be represented in the equation as follows:

[tex]F= ma[/tex]

or, [tex]a =\frac{F}{m}[/tex]

Acceleration or gaining speed happens when a force acts on an object.

Given the mass of the object, m= 500 Kg

The force applied on the object, F = 1000N

The acceleration produced in the mass, a = F/m = 1000/500 = 2m/s².

Therefore, the mass accelerates at a rate of 2m/s².

Learn more about Newton's second law of motion, here:

brainly.com/question/13447525

#SPJ2

Which describes the motion of the box based on the resulting free-body diagram?
1. It is moving up with a net force of 20 N.
2. It is moving to the right with a net force of 10 N.
3. It is in dynamic equilibrium with a net force of 0 N.
4. It is in static equilibrium with a net force of 0 N.

Answers

Answer:

D. (static equilibrium)

Explanation:

I just took the test and made a 100 with that answer.

Answer:

4. It is in static equilibrium with a net force of 0 N.

Explanation:

Just got it right :)

Question 7
(01.01 MC)
What is the difference between a hypothesis and a theory?

Answers

A hypothermia is like an idea and a theory is something you think

What is the acceleration along the ground of a 18 kg wagon when it is pulled with a force of 91 N at an angle of 35° Above the horizontal?

Answers

Answer:

4.1 m/s²

Explanation:

Net force in the x direction equals the mass times the acceleration.

∑F = ma

91 cos 35° = (18 kg) a

a = 4.1 m/s²

Answer:

Explanation:

bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb

How would natural cycles (day/night, moon phases) change if gravity did not
exist?

Answers

Answer: Eh, we would be dead...

Explanation: First off, the moon is orbiting us for one reason, gravity. and if the switch for gravity just flicked off, poof! The moon would be speeding away at 1,000-2,000 hours! And the reason that we orbit the sun is gravity too. So every planet would fling into space. Everything in the UNIVERSE would fling into space. That much flying debris would eventually smash into earth. Well, if we did survive that, then we would freeze instantly because when we travel too far away from the star that we orbit, the planet would become very life-threateningly cold. And in this case, we are traveling away from the sun, which is the star we orbit. If we still manage to survive THAT, then we...would actually die from the start, cuz what holds our planet together? You guessed it-gravity.

what is it called when I sound waves slowed buy a new medium
1.echo
2.transmission
3.absorption
4.reflection

Answers

Answer:

3

Explanation:

15)
The Celsius temperature equal to 86° Fahrenheit is:
T(F) = 9/5T(C) + 32
T(C) = 5/9 ( T(F) - 32)

A)
16°C
B)
30°C
C)
212°C
D)
190°C

Answers

Answer:

letter b

Explanation:

30 degrees Celsius equals 86 degrees Fahrenheit add me plesse mark brainiest

What is called mass per unit

volume of a substances? | ककसी पदाथष के

द्रव्यमान प्रतत इकाई आयतन को क्या कहते हैं?

A : Mass | द्रव्यमान

B : Weight | भार

C : Density | घनत्व

D : Volume | आयतन

Ans:
C : Density | घनत्व​

Answers

Answer:

Density

Explanation:

The definition of density of a substance is the quotient between its mass and its volume. Such results in the mass per unit of volume.

A metal wire has a circular cross section with radius 0.800 mm. You measure the resistivity of the wire in the following way: you connect one end of the wire to one terminal of a battery that has emf 12.0 V and negligible internal resistance. To the other terminal of the battery you connect a point along the wire so that the length of wire between the battery terminals is d. You measure the current in the wire as a function of d. The currents are small, so the temperature change of the wire is very small. You plot your results as I versus 1/d and find that the data lie close to a straight line that has slope 600 A⋅m.

Required:
What is the resistivity of the material of which the wire is made?

Answers

Answer:

The value is   [tex]\rho  =  4.02 *10^{-8} \  \Omega \cdot m[/tex]

Explanation:

From the question we are told that

   The radius is  [tex]r =   0.800 mm = 0.0008 \ m[/tex]

   The voltage of the battery is  [tex]emf  =  12.0 V[/tex]

    The slope is  [tex]s =  600 \ A \cdot m[/tex]

Generally the resistance is mathematically represented as

     [tex]R  =  \frac{\rho *  d }{A }[/tex]

Generally the current is mathematically represented as

      [tex]I = \frac{V}{R}[/tex]

=>    [tex]I = \frac{V}{\frac{\rho *  d }{A }}[/tex]

=>   [tex]I  =  \frac{V *  A }{\rho}  *  \frac{1}{d}[/tex]

Comparing this equation to that of a straight line we see that the slope is  

      [tex]s =  \frac{V *  A }{\rho}[/tex]

So    [tex] 600  =  \frac{V *  A }{\rho}[/tex]

Here A is the cross-sectional  area of the wire which is mathematically represented as

        [tex]A =  \pi r^2[/tex]

=>       [tex]A =  3.142 *   (0.0008 )^2[/tex]

=>       [tex]A =  2.011*10^{-6} \ m^2[/tex]    

So

     [tex] 600  =  \frac{12.0 *  (2.011*10^{-6}) }{\rho}[/tex]

=>   [tex]\rho  =  \frac{12 * 2.011*10^{-6} }{600}[/tex]

=>  [tex]\rho  =  4.02 *10^{-8} \  \Omega \cdot m[/tex]

 

   

PLEASE PLEASE HELP PICTURE INCLUDED

Answers

Answer:

a is the answer

Explanation:

Which function has a graph that intersects the y-axis at the point (0-4)?
Plz help por favor

Answers

Answer:

I believe B. The picture is not completely clear

Explanation:

The student toses a ball into the air and then watches the ball fall back down to earth. When does the ball have the most potential energy

Answers

Answer:

when the ball is at its highest in the air.

Explanation:

I don't know for sure, but when the ball is in the air it has potential energy to fall(or something like that).

A trebuchet launches a pumpkin at an angle of 27 degrees at an initial velocity of 32 m/ s from the ground. What is the apogee of the pumpkin?​

Answers

Answer:

10.77 m

Explanation:

From the question given above, the following data were obtained:

Initial velocity (u) = 32 m/s

Angle of projection (θ) = 27°

Acceleration due to gravity (g) = 9.8 m/s²

Apogee i.e maximum height (H) =?

Thus, the apogee i.e the maximum height of the pumpkin can be obtained as follow:

H = u² Sine² θ /2g

H = 32² × (Sine 27)² / 2 × 9.8

H = 1024 × (0.454)² / 19.6

H = (1024 × 0.206116) / 19.6

H = 10.77 m

Thus, the apogee i.e the maximum height of the pumpkin is 10.77 m.

According to the kinetic theory, what happens when the temperature of water
increases?
The water molecules increase their speed.
The water molecules do not change speed.
The water molecules decrease their speed.

Answers

the molecules will increase their speed
The water molecules increase their speed. Think about a pot of boiling water as it gets hotter the molecules bounce off of each other more rapidly.

If the maximum linear velocity her center of mass reaches is 2.3 m/s, what is her maximum angular velocity

Answers

Like linear velocity, angular velocity is the relationship between the variation of angular space at a given time.

It was agreed that the trajectory of the movement is clockwise. Thus, the movement that follows this orientation will be positive and the opposite, negative.

For the formula relating the linear velocity, it is necessary to take into consideration the following formula

[tex]v = \omega \times R[/tex]

For example, for a R = 0.738 m

[tex]2.3 m/s = \omega \times R \therefore\\ R = 0.738m \therefore\\\omega = 3.12 \frac{rad}{s}[/tex]

What is the final velocity of a running back that is moving with an initial velocity of 2 m/s and accelerates at a rate of 4 m/s$$ in 5 seconds as he moves toward the defensive line?

Answers

Answer:

Final velocity = 22

Explanation:

22-2/5= 4

20/5=4

so add to so it is not 18/5

Then you get your answer.

Answer:

4. A sound wave moves towards a building at 5 m/s for 22 seconds.

Explanation:

8. In explosives, potential energy is generally
stored in the form of
a thermal energy
b. electromagnetic energy
c. nuclear energy
d. chemical energy

Answers

Answer:

In explosives,potential energy is in the stored form of chemical energy.

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