Answer:
60 cycles
Explanation:
The first thing we must do to solve the problem is to find how many cycles are presented in 1cm by multiplying the frequency by the base time of the
K=time base=2ms/cm=2x10-3s/cm
f=frecuency=3000s^-1
N=fk
N=(3000)(2x10^-3)=6cycles/cm
Ntot=6x10=60cycles
Answer:
2.30 atm
Explanation:
Using Boyle's law :-
This can be written as:-
Given ,
For Bulb 1
Pressure = 7.25 atm
Volume = 51.0 mL
For Bulb 2
Pressure = 1.18 atm
Volume = 250 mL
For Bulb 3
Volume = 45.0 mL
Pressure = 5.96 atm
Given that the volume of the tubing = 47.0 mL
Volume of the whole system = Sum of the volume of the three bulbs + Volume of the tubing
Also, Total volume, V = 51.0 + 250 + 45.0 +47.0 mL = 393 mL
Using above equation as:
We get, Total pressure, P = 2.30 atm
Answer:
B
Explanation:
there are three modes of heat transfer which are
- conduction
- convection
- radiation
Conduction is a mode of heat transfer in solid materials
Convection refers to a mode of heat transfer of fluids in motion.
Radiation occurs when heat moves as energy waves in form of infrared radiation. The energy from the sun reaches us by radiation.
From the list of options;
option A refers prevention of heat transfer by radiation
option B refers to noodles rising and falling in a poy of boiling water. The path which the noodles move shows the convective path of the fluid.
option C refers to heat transfer by conduction
Option D refers to oth convection and radiation as modes of heat transfer.
option B best describes heat transfer by convection
Answer:
176.22 nm
Explanation:
= Index of refraction of oil = 1.64
= Wavelength of the light = 578 nm
= minimum thickness of the oil
For destructive interference, we have
For minimum thickness, m = 1
The spring constant is computed by:
F = kx
Where: F is the force applied in newtons (N)
k is the spring constant measured in newtons per meter (N/m); and
x is the distance the spring is stretched (m)
and
F = mg
Where: F is the force pulling objects in the direction of the Earth.
m is the mass of the object.
g is the acceleration due to gravity;
So plugging our values in the formula:
F = mg
= (1.8) (9.81) = 17.658N
k =
F/x = 17.658 /0.09 = 196.2 N/meter