Answer:
5 neutrons
Explanation:
Both protons and neutrons have a mass of about 1 atomic mass unit (amu). The number in the notation for an isotope is its mass in amu. That means the number is essentially the sum of protons and neutrons in the isotope (electrons don't contribute significantly to the mass).
If lithium has 3 protons, lithium-8 has 8 - 3 = 5 neutrons.
It should be 5 neutrons
a. the light will reach the front of the rocket after it reaches the back of the rocket.
b. the light will reach the front of the rocket at the same instant that it reaches the back of the rocket.
c. the light will reach the front of the rocket before it reaches the back of the rocket. 2.) A rocket is moving at 1/4 the speed of light relative to Earth. At the center of this rocket, a light suddenly flashes. To an observer at rest in the rocket
a. the light will reach the front of the rocket before it reaches the back of the rocket.
b. the light will reach the front of the rocket at the same instant that it reaches the back of the rocket.
c. the light will reach the front of the rocket after it reaches the back of the rocket. 3.) An astronaut in an inertial reference frame measures a time interval Δt between her heartbeats. What will observers in all other inertial reference frames measure for the time interval between her heartbeats?
a. Δt
b. less than Δt
c. more thanΔt
d. The answer depends on whether they are moving toward her or away from her. 4.) You are a passenger on a spaceship. As the speed of the spaceship increases, you would observe that
a. the length of your spaceship is getting shorter.
b. the length of your spaceship is not changing.
c. the length of your spaceship is getting longer. 5.) A star is moving towards the earth with a speed at 90% the speed of light. It emits light, which moves away from the star at the speed of light. Relative to us on earth, what is the speed of the light moving toward us from the star?
a. 0.90c
b. 1.9c
c. 1.20c
d. 1.1c e,) c
Answer:
35
Explanation:
total magnification = eyepiece lens x objective lens
TM = 10X x 25X
TM = 250X
The earth behaves as a magnetic dipole. Therefore a freely suspended magnet always points towards in the north-south direction because the north pole of the suspended magnet attracts the south pole of the earth's magnet which is the geographical north pole of the earth.
hopethishelp!
Answer:
Because the north pole of a compass needle points towards geographical N and S poles and the compass needle points towards georaphical south.
Explanation:
Earth is a huge magnet.
Hope it was helpful....
c. Central Powers.
b. Allied Forces.
d. Axis Powers.
B) the point between 2 objects that is in the exact center
3) the point between 2 objects where they balance each other
Answer: 3) the point between 2 objects where they balance each other
Explanation:
The center of mass of two bodies about which the bodies orbit and balance each other is known as Barycenter. It is the point of balance of two or more celestial bodies. The Barycenter determines the orbit of the celestial bodies.
For example: the binary stars orbit a common center of mass. Pluto and its moon Charon revolve about their Barycenter.
Hence, the correct option is 3.
b. inertia
c. momentum
d. chemical energy
By definition, we have to:
Digestion is the transformation of foods that are ingested into simpler substances to be absorbed.
Digestion has different processes:
1) Mechanical processes to reduce the size of food.
2) Chemical processes to reduce the size of the particles and prepare them for absorption.
Therefore, the energy derived from the digestion process is the chemical energy.
Answer:
The energy derived from the digestion of food is chemical energy.
Answer: Chemical energy
Explanation:
Digestion is a chemical process where glucose burns in presence of oxygen producing energy which helps us to perform work and liberating carbon-dioxide and water. The carbon-dioxide is exhaled out.
C₆H₁₂O₆ (Food) + O₂ → CO₂ +H₂O+ Energy
Thus, through digestion chemical energy is obtained as old bonds are broken to form new bonds through a chemical process.