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OleMash [197]
3 years ago
7

Which of the following is closest to 2cm?

Physics
1 answer:
Sloan [31]3 years ago
4 0
C because the the smallest thing then the other ones because it never said what kind of size of it
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Most geologists accept radiometric dating techniques as valid because
Rus_ich [418]

Most geologists accept radiometric dating techniques as valid because radioactive elements decay at a constant and measurable rate.

Answer: Option C

<u>Explanation:</u>

Scientists prefer radioactive dating to carbon dating because it is more accurate in measuring.  The analysis depends upon the radioactive decay of radioactive isotopes of any matter in a given rock or soil.

The parent atoms and daughter atoms are compared while studying, and hence age can be calculated easily. Radioactive decay depends upon the given half-life of the atom, which is a constant and is known. So, it would be very easy to calculate the number of progeny atoms and parent atoms and find out their age.

7 0
3 years ago
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An electric toy with a resistance of 2.50 Ω is operated by a 3.00-V battery. (a) What current does the toy draw? (b) Assuming th
Leno4ka [110]

Answer:

a) The current is i = 1.2 A

b) The charge is Q = 17280 C

c) The energy is E = 43200 J

Explanation:

a) The current is given by the ohm's law wich is:

i = V/R = 3/2.5 = 1.2 A

b) Since the charge is steady we can use the following equation to find the charge amount in that time:

i = Q/t

Q = t*i

Where t is in seconds, so we have 4h * 3600 = 14400 s

Q = 1.2*14400 = 17280 C

c)  The energy is the power delivered to the toy multiplied by the time:

P = 1.2*2.5 = 3 W

E = P*t = 3*14400 = 43200 J

7 0
3 years ago
Can anybody helppp me with this
KonstantinChe [14]

Answer:

Salt dissolving

Explanation:

Dis solving salt in water doesn't change it's chemical composition

4 0
3 years ago
Read 2 more answers
[No Value Inputted Into Question]
Elden [556K]

Answer:

what do you mean ???????????

5 0
3 years ago
A 6.5-l sample of nitrogen at 25°c and 1.5 atm is allowed to expand to 13.0 l. the temperature remains constant. what is the fin
Katarina [22]
The formula that we will going to use in this question is simply P1V1/T1 = P2V2/T2 where T is the constant.
P1V1 = P2V2 
P2 = P1V1/V2 = (V1 / V2) x P2 = (13.0 L / 6.5 L) x 0.76 atm = 1.5 atm 
The answer in this question is 1.5 atm
5 0
3 years ago
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