Astronomers find white dwarfs that distinguish them from main sequence stars because white dwarfs get really hot, we can search for their ultraviolet radiation.
<h3>What is a white dwarf?</h3>
A white dwarf is a very hot star that radiated much energy in the form of ultraviolet radiation.
This UV radiation is initially very bright and then these stars become red with time.
In conclusion, Astronomers find white dwarfs they can search for their ultraviolet radiation.
Learn more about white dwarfs here:
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Answer:
They are both correct.
Explanation:
The density of an object is defined as the ratio of its mass to its volume. This implies that the density of the object is both proportional to the mass and also to the volume of the object. John only mentioned mass which is correct. Linda mentioned the second variable on which density depends which is the volume of the object.
Hence considering the both statements objectively, one can say that they are both correct.
F=ma
m=total mass = 2300kg+2500kg=4800
F=18000N
a=?
a=F/m
a=18000/4800
a=3.8m/s^2
Final answer
Answer:
![F=-88Ib](https://tex.z-dn.net/?f=F%3D-88Ib)
Explanation:
From the question we are told that:
Force P=88Ib
Mass of crate M_c=210Ib
Generally the equation for Frictional force F is mathematically given by
![Friction\ force (f) = friction\ coefficient\ (u) * Normal\ reaction (N)](https://tex.z-dn.net/?f=Friction%5C%20force%20%28f%29%20%3D%20friction%5C%20coefficient%5C%20%28u%29%20%2A%20Normal%5C%20reaction%20%28N%29)
![F=u*N](https://tex.z-dn.net/?f=F%3Du%2AN)
with ![\mu =0.47](https://tex.z-dn.net/?f=%5Cmu%20%3D0.47)
![F=98.7Ib](https://tex.z-dn.net/?f=F%3D98.7Ib)
Therefore since Static Friction supersedes applied force body remains at rest.
Frictional force =88Ib (negative)
![F=-88Ib](https://tex.z-dn.net/?f=F%3D-88Ib)
Answer:
a. an increase in the mass on the spring.
Explanation:
T = 2π/ω = 2π/√(k/m) = 2π√(m/k)
2π is a constant
as m is in the numerator, increasing mass will increase the period.