Answer:
D. from a separate pool than is the control group.
Explanation:
in the picture the person answers is backwards but...
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Atomic Nucleus: The atomic number of an atom is equal to the number of what particles in the nucleus?:
1 answer:
Answer:
B) protons
Explanation:
The total number of protons in an atom represents the atomic number of that element. An element is generally expressed as
Where,
A is the element
N is the Mass number i.e., the number of neutrons and protons in an atom.
Z is the atomic number.
The elements are arranged according to their atomic number in the modern periodic table.
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Answer:
6 m/s
Explanation:
Given that :
mass of the block m = 200.0 g = 200 × 10⁻³ kg
the horizontal spring constant k = 4500.0 N/m
position of the block (distance x) = 4.00 cm = 0.04 m
To determine the speed the block will be traveling when it leaves the spring; we applying the work done on the spring as it is stretched (or compressed) with the kinetic energy.
i.e
v = 6 m/s
Hence,the speed the block will be traveling when it leaves the spring is 6 m/s
Answer:
C. 8.4 × 10^2 volts
Explanation:
The potential energy of a charge is given by:
where
q is the magnitude of the charge
V is the electric potential
In this problem, we have
is the charge
is the potential energy
Re-arranging the formula and using these numbers, we can find the electric potential: