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
r-ruslan [8.4K]
3 years ago
13

The cost, density and resistivity of copper, steel and aluminum

Physics
1 answer:
otez555 [7]3 years ago
3 0
Density of copper: 8,9
Density of steel: 7,7
Density of aluminum: 2,7
And
Resistivity of copper: 1,7
Resistivity of steel: 16,9
Resistivity of aluminum: <span>2,7</span>

Hope I Helped You!!! :-)

Have A Good Day!!!
You might be interested in
Using an inclined plane, what happens to the amount of work that has to be done?
weeeeeb [17]
A. The amount of work increases.
Imagine you are pushing a box on a flat surface. Now imagine pushing it up a steep hill. It gets harder and that's how I remember this.
Hope this helps. 
8 0
3 years ago
Read 2 more answers
A rocket achieves a lift-off velocity of 500.0 m/s from rest in 30.0 seconds. Calculate the average acceleration of the rocket.
Anettt [7]

Answer:

The average acceleration is 16.6 m/s² ⇒ 1st answer

Explanation:

A rocket achieves a lift-off velocity of 500.0 m/s from rest in

30.0 seconds

The given is:

→ The initial velocity = 0

→ The final velocity = 500 meters per seconds

→ The time is 30 seconds

Acceleration is the rate of change of velocity of the rocket

→ a=\frac{v-u}{t}

where a is the acceleration, v is the final velocity, u is the initial velocity

and t is the time

→ u = 0 , v = 500 m/s , t = 30 s

Substitute these values in the rule

→ a=\frac{500-0}{30}=\frac{500}{30}=16.6 m/s²

<em>The average acceleration is 16.6 m/s²</em>

6 0
3 years ago
A football player with a mass of 85 kg wears a uniform and helmet that have a mass of 4.5 kg. The football player moves at 2.1 m
DochEvi [55]
The answer would be 187.95 kg.m/s.

To get the momentum, all you have to do is multiply the mass of the moving object by the velocity. 

p = mv

Where:
P = momentum
m = mass
v = velocity

Not the question is asking what is the total momentum of the football player and uniform. So we need to first get the combined mass of the football player and the uniform. 

Mass of football player = 85.0 kg
Mass of the uniform     = <u>  4.5 kg</u>
TOTAL MASS                  89.5 kg

So now we have the mass. So let us get the momentum of the combined masses. 

p = mv
   = (89.5kg)(2.1m/s)
   = 187.95 kg.m/s

5 0
3 years ago
Read 2 more answers
BRAINLIEST AND 5 STARS. HELP ASAP.
liberstina [14]
Wavelength = wavespeed / frequency

0.5 meter = speed / 200 Hz
speed = 0.5m * 200 Hz
= 100 m/s
Solved
4 0
3 years ago
Two point charges of magnitudes +5.00 μC, and +7.00 μC are placed along the x-axis at x = 0 cm and x = 100 cm, respectively. Whe
joja [24]

Answer:

45.8 cm

Explanation:

To solve this, we will use the formula

5 / x² = 7/(1 - x)²

5 / x² = 7 / (1 - 2x + x²)

5 / 7 = x² / (1 - 2x + x²)

x = 0.5 * (√(35) - 5) meters

x = 0.5 * (5.916 - 5)

x = 0.5 * (0.916)

x = 0.458 or x = 45.8

8 0
3 years ago
Other questions:
  • What is the kinetic energy of a car of 1500 kg moving 25 m/s?
    8·1 answer
  • Explain why people are hesitant to drill for oil in the Arctic National Wildlife Refuge
    14·1 answer
  • What total distance will a sound wave travel in air in 3.00 seconds at stp?
    14·1 answer
  • A spring stretches by 0.014 m when a 3.7-kg object is suspended from its end. How much mass should be attached to this spring so
    14·1 answer
  • What is the speed of an electron that has been accelerated from rest through a potential difference of 1020 V?
    14·1 answer
  • A uniform copper sphere and a uniform aluminum sphere have the same mass.What is the ratio of the radius of the aluminum sphere
    14·1 answer
  • Two bulbs are connected in parallel across a source of EMF = 8.0V with a negligible internal resistance. One bulb has a resistan
    13·1 answer
  • 5. Describe the shape of the waveform in the secondary coil for a sine, square and triangle wave in the primary coil. How does t
    15·1 answer
  • What type of energy conversion results when friction slows down a ball rolling across the floor
    14·1 answer
  • PLS ANSWER FAST WILL GIVE BRAINLEST!!!!
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!