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scoundrel [369]
3 years ago
6

Is the measurement of the density of a substance as compared to water.

Physics
1 answer:
Ilya [14]3 years ago
8 0
C. Specific gravity is the answer
You might be interested in
As the frequency of the ac voltage across a capacitor approaches zero, the capacitive reactance of that capacitor:___________.
sergij07 [2.7K]

Answer:

B) approaches infinity

Explanation:

The capacitive reactance of an AC capacitor is given by;

X_C = \frac{1}{\omega C } = \frac{1}{2\pi f C}

Where;

C is the capacitance

f is the frequency of the ac voltage

X_C = \frac{1}{\omega C} = \frac{1}{2\pi f C} \\\\X_C = \frac{1}{2\pi f C} \\\\X_C = \frac{1}{2\pi (0) C} \\\\X_C = \frac{1}{0} \\\\X_C = \ infinity

Therefore, as the frequency of the ac voltage across a capacitor approaches zero, the capacitive reactance of that capacitor approaches infinity.

The correct option is (B) approaches infinity

7 0
3 years ago
Carbon-14 is used to determine the age of ancient objects. If a sample today contains 0.060 g of carbon-14, how much carbon-14 m
MakcuM [25]

Answer: 86.47 g of carbon-14 must have been present in the sample 11,430 years ago.

Explanation:

Half-life of sample of carbon -14= 5,730 days

\lambda=\frac{0.693}{t_{\frac{1}{2}}}=\frac{0.693}{5,730 days}=0.00012 day^{-1}

Let the sample present 11,430 years(t) ago = N_o

Sample left till today ,N= 0.060 g

N=N_o\times e^{-\lambda t}

ln[N]=ln[N]_o-\lambda t

\log[0.060 g]=\log[N_o]-2.303\times 0.00012 day^{-1}\times 11,430 days

\log[N_o]=1.9369

N_o=86.47 g

86.47 g of carbon-14 must have been present in the sample 11,430 years ago.

5 0
3 years ago
Read 2 more answers
In 8.5 s a fisherman winds 2.4 m of fishing line onto a reel whose radius is 3.0 cm (assumed to be constant as an approximation)
SSSSS [86.1K]

Answer:

9.412 rad/s.

Explanation:

Velocity is the rate of change of an object's position.

V = x/t

Where x is the distance in m

= 2.4 m

t is time taken in s

= 8.5 s

V = 2.4/8.5

= 0.2824 m/s.

Equating linear velocity and angular velocity,

V = ω*r

Where,

ω Is the angular speed in rad/s

r is the radius of the circle in m

= 3 cm

= 3cm * 1m/100 cm = 0.03 m

ω = V/r

= 0.2824/0.03

= 9.412 rad/s.

4 0
4 years ago
Atoms are split at power plant to create electricity*
Rudiy27

Answer:

B. Nuclear to Electrical

Explanation:

Atoms are split at power plants to create electricity. The energy conversion in this process is from nuclear to electrical energy.

  • When atoms are split, nuclear energy is released.
  • Some part of the mass of the atom is converted to energy.
  • The nuclear energy released is expressed as heat energy.
  • This energy is used to heat water in boilers when produces steam that are used to drive the movement of turbines.
  • This in turn generates electricity.
8 0
3 years ago
Of all the parts of an atom, which part is the most important in terms of Electricity,Chemistry, and life In general?
Snezhnost [94]
Neutrons number one
3 0
3 years ago
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