Object true weight is given as
now we know that g = 9.8 m/s^2
now when it is complete submerged in water its apparent weight is given as 82 N
apparent weight = weight - buoyancy force
apparent weight = 82 N
weight = 123 N
now we have
82 = 123 - buoyancy force
buoyancy force = 123 - 82 = 41 N
now we also know that buoyancy force is given as
now as we know that mass of the object is 12.55 kg
its volume is 4.18 * 10^-3 m^3
now we know that density will be given as mass per unit volume
so here density of object is 3002.4 kg/m^3
Answer:
θ for water = 0.3684°
Explanation:
given data
wavelength λ = 603 nm
angle θ = 0.49°
index of refraction n = 1.33
to find out
angular fringe separation
solution
we know that double slit interference is here
m λ = d sin(θ) .................1
so for air it will be
m λ(air) = d sin(θ)air ...........2
and for water it will be
m λ(water) = d sin(θ)water .............3
now we take here ratio of equation 2 and 3
= 
and
ratio of wavelength is = 
ratio of wavelength = 
ratio of wavelength = 0.75187
so
sin(θ)water = sin(θ)air (0.75187)
sin(θ)water = sin(0.49) (0.75187)
sin(θ)water = 0.006429
so (θ)water is
(θ)water = 0.3683°
we notice here that by using small angle formula
we have approximate sin(θ) = θ
so θ for water is = 
θ for water = 
θ for water = 0.3684°
I think it’s 0 m/s because usually what I remember is when velocity is moving the acceleration is constant
Answer:
3.8 × 10 ⁻¹⁴ m
Explanation:
The alpha particle will be deflected when its kinetic energy is equal to the potential energy
Charge of the alpha particle q₁= 2 × 1.6 × 10⁻¹⁹ C = 3.2 × 10⁻¹⁹ C
Charge of the gold nucleus q₂= 79 × 1.6 × 10⁻¹⁹ = 1.264 × 10⁻¹⁷C
Kinetic energy of the alpha particle = 5.97 × 10⁶ × 1.602 × 10⁻¹⁹ J ( 1 eV) = 9.564 × 10⁻¹³
k electrostatic force constant = 9 × 10⁹ N.m²/c²
Kinetic energy = potential energy = k q₁q₂ / r where r is the closest distance the alpha particle got to the gold nucleus
r = ( 9 × 10⁹ N.m²/c² × 3.2 × 10⁻¹⁹ C × 1.264 × 10⁻¹⁷C) / 9.564 × 10⁻¹³ = 3.8 × 10 ⁻¹⁴ m
Answer:
The Sun is a celestial body. It's a massive, spinning orb of heated gas that's glowing. The Sun is similar to the stars that may be seen in the night sky. The Sun is the centre of our Solar System, containing the majority of its mass. The Sun is the centre of our Solar System, and all of the planets, including Earth, revolve around it.
Explanation:
