The student needs to add A. krypton and D. barium.
a) since a=0 therefore, friction force =0
b) friction = 59.5 × 1 =59.5 N.
c)maximum acceleration = 0.566 × g =5.54 m/s².
<h3>What is Friction force?</h3>
The force preventing sliding against one another of solid surfaces, fluid layers, and material components is known as friction. There are various kinds of friction: Two solid surfaces in touch are opposed to one another's a relative lateral motion by dry friction.
<h3>What is acceleration?</h3>
Acceleration is the rate at which an object's velocity with respect to time changes. They are vector quantities. The direction of the net force acting on an object determines the direction of its acceleration.
Hence, (a) since a=0 therefore, friction force =0, (b) friction = 59.5 × 1 =59.5 N, (c)maximum acceleration = 0.566 × g =5.54 m/s².
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Answer:
c) True. factor four
Explanation:
The energy density of an electromagnetic wave is given by
u = ½ ε₀ E² = B² / 2μ₀
Where ε₀ is the dielectric constant and μ₀ the magnetic permittivity.
Let's apply this equation to the present case
If we double the electro field
E ’= 2 E₀
u’= ½ ε₀ (2E₀)²
u’= ½ ε₀ Eo² 4
u’= 4 u₀
Therefore the energy is multiplied by four
Let's check the answers
a) False
b) False
c) True
d) False
e) False
Answer:
volume of bubble is 2.736 cm³
Explanation:
given data
height h = 35 m
volume = 1.98 cm³ = 1.98 × m³
temperature t1 = 5.2°C
temperature t2 = 16.5°C
to find out
volume of the bubble
solution
first we find pressure depth 35 m
pressure = Pt + ρ × g × h ................1
here Pt is pressure at top = 1.013 × Pa and ρ density of water
put here value in equation 1
pressure = Pt + ρ × g × h
pressure = 1.013 × + 1000 × 9.8 × 35
pressure = 444300 Pa
so
from gas equation
p1×v1 / t1 = pt×v2 / t2
put here value
v2 = p1×v1×t1 / pt×t1
v2 = 444300× 1.98 × × 5.2 / ( 1.013 × × 16.5 )
v2 = 2.736 × m³
so volume of bubble is 2.736 cm³