Density=2g/mL and volume=20mL what is mass
Answers
Answer:
40g
Explanation:
Mass = density x volume
= 2 x 20
= 40g
Answer:
m = V × ρ
= 20 milliliter × 2 gram/cubic meter
= 2.0E-5 cubic meter × 2 gram/cubic meter
= 4.0E-5 gram
= 4.0E-8 kilogram
Explanation:
The density of a material, typically denoted using the Greek symbol ρ, is defined as its mass per unit volume.
ρ =
m
V
where:
ρ is the density
m is the mass
V is the volume
The calculation of density is quite straightforward. However, it is important to pay special attention to the units used for density calculations. There are many different ways to express density, and not using or converting into the proper units will result in an incorrect value. It is useful to carefully write out whatever values are being worked with, including units, and perform dimensional analysis to ensure that the final result has units of mass volume. Note that density is also affected by pressure and temperature.
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1.0 x 10^2 A
1.0 x 10^-10 A
4.0 x 10^0 A
Answers
I = 2.0 x 10^-4 C / 5.0 x 10^-5 s
I = 4 A
Q= I×t
Where Q is charge in Coulombs C,
I is current in Amperes A,
t is in seconds s.
The rate of current flow is defined as the charge passing through a point in the circuit per second.
Rearranging formula gives I=
⇒I = = 4 Amperes
∴ current flow = 4.0×10^0 A
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Explanation:
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reflection
refraction
interference
Answers
Answer: reflection
Explanation:
SONAR - Sound Navigation and Ranging
It works on the principle of Echo i.e. the reflection of sound. Sound waves are sent out which get bounced off a nearby object. The reflected sound waves is detected and distance to the object is estimated. Sonar is used to detect, navigate or communicate objects underwater. Thus, a fishing boat uses sonar to locate the fish. It is employing reflection.
b. violence and intimidation
c. passive resistance
d. running for political office
Answers