Currently, there are no black dwarfs that exist in our universe. Black dwarfs are extremely cool and are almost invisible. They are hypothetical in existence.
To determine the answer to this item, we use two (2) equations.
Equation for kinetic energy:
KE = 0.5 mv²
Equation for momentum:
P = mv
From the second equation, we can deduced that,
m = P/v
Substituting the known values from the given above,
m = 30/v
Using this expression in the first equation,
KE = 0.5 mv²; 150 = 0.5(30/v)(v²)
The value of v from the equation is 10 m/s.
The mass is therefore calculated as such,
m = 30/v = 30/10 = 3 kg
Hence, the answers are,
<em> Mass = 3 kg</em>
<em> Velocity = 10 m/s</em>
Answer:
Explanation:
The De Broglie's wavelength of an object is given by:
where
h is the Planck constant
m is the mass of the object
v is the speed of the object
In this problem, we have:
is the mass of the pellet
is the speed of the pellet
Substituting into the equation, we find the wavelength of the pellet:
Answer:
a
b
Explanation:
From the question we are told that
The wavelength is
The number of antinodal planes of the electric field considered is n = 5
The width is mathematically represented as
Generally the frequency the errors was made is mathematically represented as
Here c is the speed of light with value
is the wavelength of the microwave has to be in order for there still to be five antinodal planes of the electric field along the width of the oven, which is mathematically represented as
So
Answer:
Football, Baseball, Soccer
Explanation:
Football field is a rectangle, Baseball field would be a diamond, and soccer would also be a rectangle.