i will say that 32.2m s2 bt am not sure
Answer:
The charge of the electron is -1, the charge of the neutron is zero. protons and neutrons are located in the nucleus and electrons, around the nucleus. The atomic-force microscope is very important because it helps to study the atoms in a clear way. An aluminum atoms is made of a nucleus that contains 13 neutrons with zero charge, and 13 protons with +1 charge each. The nucleus is sorrounded by 13 electrons that orbit around it and are divided in 3 levels of energy.
Answer:
ω₁ = 8 rad/s
Explanation:
Assuming
1) the clay sticks to the disc we can apply conservation of angular momentum
2) That the disc moment of inertia is 1.5 kg•m²
Initial angular momentum = L = I₀ω₀ = 1.5(14) = 21 kg•m²/s
After the clay joins the party, the moment of inertia is
I₁ = 1.5 + 0.5(1.5²) = 2.625 kg•m²
21 = 2.625ω₁
ω₁ = 8 rad/s
Answer:
Explanation:
3. The word circuit means "go around", therefore a circuit is a pathway or closed path around which electricity (or water) flows.
4. Electrons flowing through a wire can be compared to water flowing through a hose. Once the flow of electrons or water is going, work, is performed.
5. You would get shocked in a bumper car by touching the floor and the ceiling at the same time. This means you are completing the circuit allowing electricity to flow.
6. Electricity from a wall outlet has enough energy to stop your
heart.
7. Electricity is the flow of electrons, because electrons move or jump from atom to atom.
8. Materials that allow electrons to move easily from atom to atom are called conductors.
9. Materials that do not allow electrons to flow easily are called insulators.
10. Semi- conductors are materials that are somewhere in between
.
11. Voltage is the force or pressure of electricity and is compared to the amount of water pressure in a hose.
12. Current (amps
) is the amount of electricity and is compared to the amount of water in a hose
.
13. Watts (power) is the term for work performed by electricity.
Answer:
14 L
Explanation:
The ice water will have to be warmed up to 37 oC
Quantity of heat gain the ice water = mcΔT
where m is the mass of water, c is the specific heat capacity of water
heat gain = heat loss
heat expected the body to lose = 520kcal = 520 × 4184 J ( 1 kcal is 4184 J)
520 × 4184 = 4200 × m × 37
m = (520 × 4184) / ( 4200 × 37) where specific heat capacity of water is 4200J/KG.K
but density = m/V where V is volume in m³
m = ρ×V
replace m with the above formula
ρV = (520 × 4184) / ( 4200 × 37) and density of water is 1000kg/m³
V = (520 × 4184) / (4200 × 37 × 1000) = 0.014 m³ = 0.014 × 1000 ( 1m³ = 1000L) = 14 L
exercise will be better as it is not quite possible to drink this (14 L) volume of ice cold water.