A loaf of bread has a mass of 2000g and a volume of 500 cm3. what is the density of the bread

Physics

1 answer:

Yuki888 [10]3 years ago

7 0

Answer:

4g/cm^3

Explanation:

density = mass / volume

= 2000 / 500

= 4g/cm^3

You might be interested in

I need to present a proposal for a device that minimizes heat transfer. I need help PLEASE

eimsori [14]

Engineers must understand the thermal properties of materials to be able to predict the performance of any given material over its lifetime in a specific application. Engineers apply their understanding of the thermal properties of materials to the design of efficient heat transfer materials for better engines, spacecraft and electronic devices. They also examine the thermal properties of insulation to design more efficient buildings and homes. Engineers develop ways to minimize heat transfer from a motor to the surrounding environment. Often they find ways to insulate the motor to decrease the convective heat transfer from the motor. They design a refrigerator to keep heat out of the inside, as well as keep the refrigerator contents cool. hope this helped

3 0

3 years ago

Cell phone conversations are transmitted by high-frequency radio waves. Suppose the signal has wavelength 36.5 cm while travelin

tia_tia [17]

Answer:

f=8.219*10^{8}Hz

Explanation:

We are going to use the formula v=fλ

Where v= velocity of radio waves

f= frequency

λ= wavelength of wave

radio waves are electromagnetic waves and as such they have the speed of light which is 3*10^{8}m/s.

also when a wave travels from one medium to another, the wavelength changes while the frequency remains the same.

calculating for the frequency of the wave in air also gives us the frequency in the window glass.

f=\frac{v}{λ}

v=3*10^{8}m/s.

λ=36.5 cm = 36.5/100= 0.365m

f=\frac{3*10^{8}m/s.}{0.365m}

f=8.219*10^{8}Hz

7 0

3 years ago

Can someone pls do this for me for 20 pts

Ann [662]

You need to delete this question ASAP! You put out your first and last name.

6 0

3 years ago

Read 2 more answers

A star is a ___ that emits energy produced by nuclear reactions in its interior.

grigory [225]

A star is a large ball of gas that emits energy produced by nuclear reactions in the star's interior. Much of this energy is emitted as electromagnetic radiation, including visible light. Light emitted by stars enables other objects in the universe to be seen by reflection.

5 0

3 years ago

An object of known mass M with speed v0 travels toward a wall. The object collides with it and bounces away from the wall in the

Bingel [31]

Neither side of the equation may be used because there are too many unknown quantities before, during, and after the collision

Explanation:

The impulse theorem states that the change in momentum of an object is equal to the impulse, which is the product between the average force applied and the duration of the collision:

$\Delta p = F \Delta t$