Answer:
Based on the Big Bang Theory, the universe should have radiation of the remnant heat from the initially very hot universe called the Cosmic Microwave Background, CMB, which is presently at a temperature of 2.725° above absolute zero temperature (approximately 3 K)
The blackbody spectrum of colder objects have progressively longer wavelengths. At the temperature of 3 K the microwave radiation is the most intense radiation emitted due to the motion of the elementary particles of an object
Therefore, a 3 k thermal radiation should be microwave
Explanation:
Answer:
a) 2.8m/s
b) 2.4m/s
Explanation:
Given:
K= 40N/cm, convert to N/m we have: k= 4000N/m
m=70kg
x=0.375
For (a)
We find the energy stored in the spring with the expression:
;
U = 281 N.m
To find the sled speed, let's use the work energy theorem which is:
Therefore
V= 2.8m/s
b) We need to calculate energy stored at 0.200m.
Let's use:
;
U = 201N.m
We now use energy theorem:
We now have
V = 2.4m/s
Acceleration = cange in velocity ÷ change in time.
acceleration = (-15 - -10) ÷ 2
acceleration = -5 ÷ 2
ACCELERATION IS -2.5m/s2
The equivalent resistance between the point A and B is 0.95 ohm.
<u>Explanation:</u>
Solving for R3, R4, and R5 since they are in parallel formation. Their equivalent resistance could be
1 / R = (1 /R3) + (1 / R4) + (1 / R5)
= (1 / 4.4) + (1 / 3.5) + (1 / 5.5)
1 / R = 0.69
R = 1.43 ohm.
Next solving R6 and leg of this resistance which are in series connection,
r = R + R6
= 1.43 + 7.1)
r = 8.53 ohm.
Finally the three resistance R1, R2 and the leg resistance which are in parallel connection,
1 / r = (1 / 1.9) + (1 / 2.5) + (1 / 8.53)
= 1.04 ohm
Equivalent resistance R eq = 1 / 1.04 = 0.95 ohm.